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<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2" location="Not provided because of security concerns.">
  <attribute name="Conventions" value="CF-1.8, ACDD-1.3" />
  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="VOC (volatile organic compounds) at Strasbourg (Danube)" />
  <attribute name="summary" value="VOC (volatile organic compounds) at Strasbourg (Danube). These measurements are gathered as a part of the following projects CAMPAIGN and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ['1-3-butadiene in air (mass_concentration_of_1-3-butadiene_in_air)', '1-3-butadiene in air (mole_fraction_of_13_butadiene_in_air)', '1-butene in air (mass_concentration_of_1-butene_in_air)', '1-butene in air (mole_fraction_of_1_butene_in_air)', '1-pentene in air (mass_concentration_of_1-pentene_in_air)', '1-pentene in air (mole_fraction_of_1_pentene_in_air)', '2-2-4-trimethylpentane in air (mass_concentration_of_2-2-4-trimethylpentane_in_air)', '2-2-4-trimethylpentane in air (mole_fraction_of_224_trimethylpentane_in_air)', '2-methylbutane in air (mass_concentration_of_2-methylbutane_in_air)', '2-methylbutane in air (mole_fraction_of_2_methylbutane_in_air)', '2-methylpentane in air (mass_concentration_of_2-methylpentane_in_air)', '2-methylpentane in air (mole_fraction_of_2_methylpentane_in_air)', '2-methylpropane in air (mass_concentration_of_2-methylpropane_in_air)', '2-methylpropane in air (mole_fraction_of_2_methylpropane_in_air)', '2-methylpropenal in air (mole_fraction_of_2-methylpropenal_in_air)', '2-methylpropenal in air (mass_concentration_of_2_methylpropenal_in_air)', '2-propanol in air (mole_fraction_of_2-propanol_in_air)', '2-propanol in air (mole_fraction_of_2_propanol_in_air)', '3-buten-2-one in air (mole_fraction_of_3-buten-2-one_in_air)', '3-buten-2-one in air (mass_concentration_of_3_buten_2_one_in_air)', 'benzene in air (mole_fraction_of_benzene_in_air)', 'butanone in air (mole_fraction_of_butanone_in_air)', 'butanone in air (mass_concentration_of_butanone_in_air)', 'cis-2-butene in air (mass_concentration_of_cis-2-butene_in_air)', 'cis-2-butene in air (mole_fraction_of_cis_2_butene_in_air)', 'cis-2-pentene in air (mass_concentration_of_cis-2-pentene_in_air)', 'cis-2-pentene in air (mole_fraction_of_cis_2_pentene_in_air)', 'ethanal in air (mole_fraction_of_ethanal_in_air)', 'ethanal in air (mass_concentration_of_ethanal_in_air)', 'ethane in air (mass_concentration_of_ethane_in_air)', 'ethane in air (mole_fraction_of_ethane_in_air)', 'ethanol in air (mole_fraction_of_ethanol_in_air)', 'ethanol in air (mass_concentration_of_ethanol_in_air)', 'ethene in air (mole_fraction_of_ethene_in_air)', 'ethylbenzene in air (mole_fraction_of_ethylbenzene_in_air)', 'ethyne in air (mole_fraction_of_ethyne_in_air)', 'isoprene in air (mass_concentration_of_isoprene_in_air)', 'isoprene in air (mole_fraction_of_isoprene_in_air)', 'm-p-xylene in air (mole_fraction_of_m-p-xylene_in_air)', 'm-p-xylene in air (mole_fraction_of_m_p_xylene_in_air)', 'methanol in air (mole_fraction_of_methanol_in_air)', 'n-butane in air (mass_concentration_of_n-butane_in_air)', 'n-butane in air (mole_fraction_of_butane_in_air)', 'n-heptane in air (mass_concentration_of_n-heptane_in_air)', 'n-heptane in air (mole_fraction_of_heptane_in_air)', 'n-hexane in air (mass_concentration_of_n-hexane_in_air)', 'n-hexane in air (mole_fraction_of_hexane_in_air)', 'n-octane in air (mole_fraction_of_n-octane_in_air)', 'n-octane in air (mole_fraction_of_octane_in_air)', 'n-pentane in air (mass_concentration_of_n-pentane_in_air)', 'n-pentane in air (mole_fraction_of_pentane_in_air)', 'o-xylene in air (mole_fraction_of_o-xylene_in_air)', 'o-xylene in air (mole_fraction_of_o_xylene_in_air)', 'propane in air (mass_concentration_of_propane_in_air)', 'propane in air (mole_fraction_of_propane_in_air)', 'propanone in air (mole_fraction_of_propanone_in_air)', 'propanone in air (mass_concentration_of_propanone_in_air)', 'propene in air (mole_fraction_of_propene_in_air)', 'toluene in air (mole_fraction_of_toluene_in_air)', 'trans-2-butene in air (mass_concentration_of_trans-2-butene_in_air)', 'trans-2-butene in air (mole_fraction_of_trans_2_butene_in_air)']" />
  <attribute name="keywords" value="&quot;Strasbourg (Danube)&quot; FR0057U 1-3-butadiene 1-butene 1-pentene 2-2-4-trimethylpentane 2-methylbutane 2-methylpentane 2-methylpropane 2-methylpropenal 2-propanol 3-buten-2-one benzene butanone cis-2-butene cis-2-pentene ethanal ethane ethanol ethene ethylbenzene ethyne isoprene m-p-xylene methanol n-butane n-heptane n-hexane n-octane n-pentane o-xylene propane propanone propene toluene trans-2-butene air CAMPAIGN mass_concentration_of_1-3-butadiene_in_air mole_fraction_of_13_butadiene_in_air mass_concentration_of_1-butene_in_air mole_fraction_of_1_butene_in_air mass_concentration_of_1-pentene_in_air mole_fraction_of_1_pentene_in_air mass_concentration_of_2-2-4-trimethylpentane_in_air mole_fraction_of_224_trimethylpentane_in_air mass_concentration_of_2-methylbutane_in_air mole_fraction_of_2_methylbutane_in_air mass_concentration_of_2-methylpentane_in_air mole_fraction_of_2_methylpentane_in_air mass_concentration_of_2-methylpropane_in_air mole_fraction_of_2_methylpropane_in_air mole_fraction_of_2-methylpropenal_in_air mass_concentration_of_2_methylpropenal_in_air mole_fraction_of_2-propanol_in_air mole_fraction_of_2_propanol_in_air mole_fraction_of_3-buten-2-one_in_air mass_concentration_of_3_buten_2_one_in_air mole_fraction_of_benzene_in_air mole_fraction_of_butanone_in_air mass_concentration_of_butanone_in_air mass_concentration_of_cis-2-butene_in_air mole_fraction_of_cis_2_butene_in_air mass_concentration_of_cis-2-pentene_in_air mole_fraction_of_cis_2_pentene_in_air mole_fraction_of_ethanal_in_air mass_concentration_of_ethanal_in_air mass_concentration_of_ethane_in_air mole_fraction_of_ethane_in_air mole_fraction_of_ethanol_in_air mass_concentration_of_ethanol_in_air mole_fraction_of_ethene_in_air mole_fraction_of_ethylbenzene_in_air mole_fraction_of_ethyne_in_air mass_concentration_of_isoprene_in_air mole_fraction_of_isoprene_in_air mole_fraction_of_m-p-xylene_in_air mole_fraction_of_m_p_xylene_in_air mole_fraction_of_methanol_in_air mass_concentration_of_n-butane_in_air mole_fraction_of_butane_in_air mass_concentration_of_n-heptane_in_air mole_fraction_of_heptane_in_air mass_concentration_of_n-hexane_in_air mole_fraction_of_hexane_in_air mole_fraction_of_n-octane_in_air mole_fraction_of_octane_in_air mass_concentration_of_n-pentane_in_air mole_fraction_of_pentane_in_air mole_fraction_of_o-xylene_in_air mole_fraction_of_o_xylene_in_air mass_concentration_of_propane_in_air mole_fraction_of_propane_in_air mole_fraction_of_propanone_in_air mass_concentration_of_propanone_in_air mole_fraction_of_propene_in_air mole_fraction_of_toluene_in_air mass_concentration_of_trans-2-butene_in_air mole_fraction_of_trans_2_butene_in_air" />
  <attribute name="id" value="38BC-YMUD.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="CAMPAIGN" />
  <attribute name="acknowledgement" value="" />
  <attribute name="doi" value="https://doi.org/10.48597/38BC-YMUD" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Moreau, F., Salameh, T., CAMPAIGN, 2026, VOC (volatile organic compounds) at Strasbourg (Danube), data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/38BC-YMUD" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="FR07L &quot;Institut Mines Telecom Lille Douai&quot; &quot;IMT Lille Douai&quot; &quot;SAGE department&quot; &quot;941 rue Charles Bourseul&quot; &quot;CS 10838&quot; 59508 Douai France" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2026-03-24T14:01:14.045324Z" />
  <attribute name="date_metadata_modified" value="2026-03-19T00:00:00Z" />
  <attribute name="creator_name" value="Felix Moreau, Therese Salameh" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="felix.moreau@imt-nord-europe.fr, therese.salameh@mines-douai.fr" />
  <attribute name="creator_institution" value="&quot;Institut Mine Telecom Nord Europe, CERI EE, IMT NE&quot;, &quot;Ecole des Mines de Douai, SAGE Department, EMD&quot;" />
  <attribute name="contributor_name" value="Felix Moreau" />
  <attribute name="contributor_role" value="data submitter" />
  <attribute name="publisher_type" value="institution" />
  <attribute name="publisher_name" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_institution" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_email" value="ebas@nilu.no" />
  <attribute name="publisher_url" value="https://www.nilu.no/" />
  <attribute name="geospatial_bounds" value="POINT Z (7.76777534 48.57278184 140)" />
  <attribute name="geospatial_lat_min" type="double" value="48.57278184" />
  <attribute name="geospatial_lat_max" type="double" value="48.57278184" />
  <attribute name="geospatial_lon_min" type="double" value="7.76777534" />
  <attribute name="geospatial_lon_max" type="double" value="7.76777534" />
  <attribute name="geospatial_vertical_min" type="double" value="140.0" />
  <attribute name="geospatial_vertical_max" type="double" value="140.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="time_coverage_start" value="2024-09-04T10:00:00Z" />
  <attribute name="time_coverage_end" value="2024-09-30T10:45:00Z" />
  <attribute name="time_coverage_duration" value="P0000-00-26T00:45:00" />
  <attribute name="time_coverage_resolution" value="P0000-00-00T00:00:00" />
  <attribute name="timezone" value="UTC" />
  <attribute name="ebas_data_definition" value="EBAS_1.1" />
  <attribute name="ebas_data_license" value="" />
  <attribute name="ebas_citation" value="Moreau, F., Salameh, T., CAMPAIGN, 2026, VOC (volatile organic compounds) at Strasbourg (Danube), data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/38BC-YMUD" />
  <attribute name="ebas_set_type_code" value="TI" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="38BC-YMUD.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/38BC-YMUD" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/38BC-YMUD" />
  <attribute name="ebas_file_creation" value="2026-05-22T03:33:33.702317Z" />
  <attribute name="ebas_export_state" value="2026-03-24T14:01:14.045324Z" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="2024-09-04T10:00:00.000000Z" />
  <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
  <attribute name="ebas_version" value="1" />
  <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="4w" />
  <attribute name="ebas_resolution_code" value="90mn" />
  <attribute name="ebas_sample_duration" value="45mn" />
  <attribute name="ebas_station_code" value="FR0057U" />
  <attribute name="ebas_platform_code" value="FR0057S" />
  <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
  <attribute name="ebas_station_land_use" value="Residential" />
  <attribute name="ebas_station_setting" value="Urban and center city" />
  <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
  <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
  <attribute name="ebas_station_altitude" value="140.0 m" />
  <attribute name="ebas_measurement_height" value="3.0 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_matrix" value="air" />
  <attribute name="ebas_laboratory_code" value="FR07L" />
  <attribute name="ebas_instrument_type" value="online_gc" />
  <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
  <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
  <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
  <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
  <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
  <attribute name="ebas_calibration_scale" value="NPL" />
  <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
  <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
  <attribute name="ebas_inlet_type" value="Stainless steel" />
  <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
  <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
  <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
  <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
  <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
  <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
  <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
  <attribute name="ebas_framework_name" value="" />
  <attribute name="ebas_framework_description" value="" />
  <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
  <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
  <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
  <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
  <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
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  <attribute name="Metadata_Conventions" value="Unidata Dataset Discovery v1.0" />
  <attribute name="geospatial_lat_units" value="degrees_north" />
  <attribute name="geospatial_lon_units" value="degrees_east" />
  <attribute name="standard_name_vocabulary" value="CF-1.7, ACDD-1.3" />
  <attribute name="history" value="None" />
  <attribute name="creator_url" value="ebas.nilu.no" />
  <attribute name="_CoordSysBuilder" value="ucar.nc2.internal.dataset.conv.CF1Convention" />
  <dimension name="time" length="391" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="1" />
  <dimension name="qc_1_3_butadiene_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_1_3_butadiene_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_1_3_butadiene_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_1_3_butadiene_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_1_3_butadiene_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_1_3_butadiene_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_1_butene_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_1_butene_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_1_butene_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_1_butene_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_1_butene_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_1_butene_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_1_pentene_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_1_pentene_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_1_pentene_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_1_pentene_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_1_pentene_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_1_pentene_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_2_2_4_trimethylpentane_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_2_2_4_trimethylpentane_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_2_2_4_trimethylpentane_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_2_2_4_trimethylpentane_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_2_2_4_trimethylpentane_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_2_2_4_trimethylpentane_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_2_methylbutane_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_2_methylbutane_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_2_methylbutane_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_2_methylbutane_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_2_methylbutane_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_2_methylbutane_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_2_methylpentane_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_2_methylpentane_pmol_per_mol_amean_flags" length="1" />
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  <dimension name="qc_2_methylpentane_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_2_methylpropane_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_2_methylpropane_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_2_methylpropane_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_2_methylpropane_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_2_methylpropane_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_2_methylpropane_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_2_methylpropenal_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_2_methylpropenal_ug_per_m3_amean_flags" length="1" />
  <dimension name="qc_2_methylpropenal_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_2_methylpropenal_ug_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_2_methylpropenal_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_2_methylpropenal_ug_per_m3_precision_flags" length="1" />
  <dimension name="qc_2_propanol_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_2_propanol_ug_per_m3_amean_flags" length="1" />
  <dimension name="qc_2_propanol_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_2_propanol_ug_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_2_propanol_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_2_propanol_ug_per_m3_precision_flags" length="1" />
  <dimension name="qc_3_buten_2_one_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_3_buten_2_one_ug_per_m3_amean_flags" length="1" />
  <dimension name="qc_3_buten_2_one_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_3_buten_2_one_ug_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_3_buten_2_one_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_3_buten_2_one_ug_per_m3_precision_flags" length="1" />
  <dimension name="qc_benzene_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_benzene_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_benzene_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_benzene_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_benzene_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_benzene_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_butanone_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_butanone_ug_per_m3_amean_flags" length="1" />
  <dimension name="qc_butanone_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_butanone_ug_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_butanone_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_butanone_ug_per_m3_precision_flags" length="1" />
  <dimension name="qc_cis_2_butene_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_cis_2_butene_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_cis_2_butene_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_cis_2_butene_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_cis_2_butene_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_cis_2_butene_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_cis_2_pentene_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_cis_2_pentene_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_cis_2_pentene_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_cis_2_pentene_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_cis_2_pentene_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_cis_2_pentene_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_ethanal_nmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_ethanal_ug_per_m3_amean_flags" length="1" />
  <dimension name="qc_ethanal_nmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_ethanal_ug_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_ethanal_nmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_ethanal_ug_per_m3_precision_flags" length="1" />
  <dimension name="qc_ethane_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_ethane_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_ethane_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_ethane_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_ethane_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_ethane_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_ethanol_nmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_ethanol_ug_per_m3_amean_flags" length="1" />
  <dimension name="qc_ethanol_nmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_ethanol_ug_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_ethanol_nmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_ethanol_ug_per_m3_precision_flags" length="1" />
  <dimension name="qc_ethene_amean_flags" length="1" />
  <dimension name="qc_ethene_ExpUnc2s_flags" length="1" />
  <dimension name="qc_ethene_precision_flags" length="1" />
  <dimension name="qc_ethylbenzene_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_ethylbenzene_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_ethylbenzene_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_ethylbenzene_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_ethylbenzene_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_ethylbenzene_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_ethyne_amean_flags" length="1" />
  <dimension name="qc_ethyne_ExpUnc2s_flags" length="1" />
  <dimension name="qc_ethyne_precision_flags" length="1" />
  <dimension name="qc_isoprene_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_isoprene_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_isoprene_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_isoprene_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_isoprene_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_isoprene_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_m_p_xylene_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_m_p_xylene_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_m_p_xylene_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_m_p_xylene_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_m_p_xylene_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_m_p_xylene_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_methanol_amean_flags" length="1" />
  <dimension name="qc_methanol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_methanol_precision_flags" length="1" />
  <dimension name="qc_n_butane_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_n_butane_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_n_butane_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_n_butane_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_n_butane_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_n_butane_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_n_heptane_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_n_heptane_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_n_heptane_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_n_heptane_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_n_heptane_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_n_heptane_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_n_hexane_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_n_hexane_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_n_hexane_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_n_hexane_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_n_hexane_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_n_hexane_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_n_octane_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_n_octane_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_n_octane_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_n_octane_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_n_octane_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_n_octane_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_n_pentane_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_n_pentane_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_n_pentane_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_n_pentane_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_n_pentane_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_n_pentane_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_o_xylene_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_o_xylene_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_o_xylene_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_o_xylene_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_o_xylene_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_o_xylene_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_propane_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_propane_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_propane_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_propane_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_propane_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_propane_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_propanone_nmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_propanone_ug_per_m3_amean_flags" length="1" />
  <dimension name="qc_propanone_nmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_propanone_ug_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_propanone_nmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_propanone_ug_per_m3_precision_flags" length="1" />
  <dimension name="qc_propene_amean_flags" length="1" />
  <dimension name="qc_propene_ExpUnc2s_flags" length="1" />
  <dimension name="qc_propene_precision_flags" length="1" />
  <dimension name="qc_toluene_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_toluene_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_toluene_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_toluene_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_toluene_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_toluene_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_trans_2_butene_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_trans_2_butene_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_trans_2_butene_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_trans_2_butene_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_trans_2_butene_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_trans_2_butene_pmol_per_mol_precision_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2024-09-04T10:22:30Z" />
    <attribute name="time_coverage_end" value="2024-09-30T10:22:30Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="5760.0" />
    <attribute name="time_coverage_duration" value="P0Y0M26DT0H0M0.000S" />
  </group>
  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-05-30" />
    <attribute name="nciso_version" value="2.4.8" />
  </group>
  <variable name="time_bnds" shape="time tbnds" type="double">
    <attribute name="long_name" value="time bounds for measurement" />
  </variable>
  <variable name="metadata_time_bnds" shape="metadata_time tbnds" type="double">
    <attribute name="long_name" value="time bounds for ebas metadata intervals" />
  </variable>
  <variable name="v_1_3_butadiene_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_1-3-butadiene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_1_3_butadiene_ng_per_m3_amean meta_1_3_butadiene_ng_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="1-3-butadiene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="29.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.41. Detection limit converted from '12.0 pmol/mol' to '29.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.41." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/1-3-butadienemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="1,3-butadiene mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_1_3_butadiene_ng_per_m3_amean" shape="qc_1_3_butadiene_ng_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_1_3_butadiene_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_1_3_butadiene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_13_butadiene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_1_3_butadiene_pmol_per_mol_amean meta_1_3_butadiene_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="1-3-butadiene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="12.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
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    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="1-3-butadiene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/1-3-butadieneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="1,3-butadiene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_1_3_butadiene_pmol_per_mol_precision" shape="qc_1_3_butadiene_pmol_per_mol_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_1_3_butadiene_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_1_butene_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_1-butene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_1_butene_ng_per_m3_amean meta_1_butene_ng_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="1-butene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="43.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.50. Detection limit converted from '17.0 pmol/mol' to '43.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.50." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/1-butenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="1-butene mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_1_butene_ng_per_m3_amean" shape="qc_1_butene_ng_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_1_butene_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_1_butene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_1_butene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_1_butene_pmol_per_mol_amean meta_1_butene_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="1-butene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="17.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/1-buteneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="1-butene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_1_butene_pmol_per_mol_amean" shape="qc_1_butene_pmol_per_mol_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_1_butene_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_1_butene_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_1-butene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_1_butene_ng_per_m3_ExpUnc2s meta_1_butene_ng_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="1-butene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.50." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/1-butenemassconcentration" />
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    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
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    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_matrix" value="air" />
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    <attribute name="cell_methods" value="time: precision" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="1-pentene" />
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    <attribute name="ebas_matrix" value="air" />
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    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="31.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.13. Detection limit converted from '10.0 pmol/mol' to '31.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.13." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/1-pentenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="1-pentene mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_1_pentene_ng_per_m3_amean" shape="qc_1_pentene_ng_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_1_pentene_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_1_pentene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_1_pentene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_1_pentene_pmol_per_mol_amean meta_1_pentene_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="1-pentene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="10.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/1-penteneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="1-pentene amount fraction" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_1_pentene_pmol_per_mol_amean" shape="qc_1_pentene_pmol_per_mol_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_1_pentene_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_1_pentene_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_1-pentene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
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    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="1-pentene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
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    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.13." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/1-pentenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="1-pentene mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_access_restriction" type="long" value="1" />
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    <attribute name="units" value="1" />
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  <variable name="meta_1_pentene_ng_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_1_pentene_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_1_pentene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
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    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
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    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="1-pentene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/1-penteneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="1-pentene amount fraction" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_1_pentene_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_1-pentene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_1_pentene_ng_per_m3_precision meta_1_pentene_ng_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="1-pentene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.13." />
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    <attribute name="actris_variable_preferred_term" value="1-pentene mass concentration" />
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    <attribute name="actris_access_restriction" type="long" value="1" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="v_1_pentene_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_1_pentene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
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    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
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    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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  <variable name="meta_1_pentene_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
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    <attribute name="ebas_sample_duration" value="45mn" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-2-4-trimethylpentane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
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    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 5.10. Detection limit converted from '12.0 pmol/mol' to '61.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 5.10." />
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    <attribute name="units" value="1" />
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  <variable name="meta_2_2_4_trimethylpentane_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_2_2_4_trimethylpentane_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_224_trimethylpentane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_2_2_4_trimethylpentane_pmol_per_mol_amean meta_2_2_4_trimethylpentane_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-2-4-trimethylpentane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
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    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="12.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/2-2-4-trimethylpentaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="2,2,4-trimethylpentane amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_2_2_4_trimethylpentane_pmol_per_mol_amean" shape="qc_2_2_4_trimethylpentane_pmol_per_mol_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_2_2_4_trimethylpentane_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_2_2_4_trimethylpentane_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_2-2-4-trimethylpentane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_2_2_4_trimethylpentane_ng_per_m3_ExpUnc2s meta_2_2_4_trimethylpentane_ng_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-2-4-trimethylpentane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 5.10." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/2-2-4-trimethylpentanemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="2,2,4-trimethylpentane mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_2_2_4_trimethylpentane_ng_per_m3_ExpUnc2s" shape="qc_2_2_4_trimethylpentane_ng_per_m3_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_2_2_4_trimethylpentane_ng_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_2_2_4_trimethylpentane_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_224_trimethylpentane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_2_2_4_trimethylpentane_pmol_per_mol_ExpUnc2s meta_2_2_4_trimethylpentane_pmol_per_mol_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-2-4-trimethylpentane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/2-2-4-trimethylpentaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="2,2,4-trimethylpentane amount fraction" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_2_2_4_trimethylpentane_pmol_per_mol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_2_2_4_trimethylpentane_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_2-2-4-trimethylpentane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ancillary_variables" value="qc_2_2_4_trimethylpentane_ng_per_m3_precision meta_2_2_4_trimethylpentane_ng_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
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    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-2-4-trimethylpentane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
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    <attribute name="ebas_calibration_scale" value="NPL" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 5.10." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/2-2-4-trimethylpentanemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="2,2,4-trimethylpentane mass concentration" />
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    <attribute name="actris_access_restriction" type="long" value="1" />
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    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_2_2_4_trimethylpentane_pmol_per_mol_precision meta_2_2_4_trimethylpentane_pmol_per_mol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-2-4-trimethylpentane" />
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    <attribute name="ebas_laboratory_code" value="FR07L" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_component" value="2-methylbutane" />
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    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
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    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_2_methylpentane_ng_per_m3_amean meta_2_methylpentane_ng_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
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    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-methylpentane" />
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    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
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    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
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    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.84. Detection limit converted from '10.0 pmol/mol' to '38.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.84." />
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    <attribute name="actris_variable_preferred_term" value="2-methylpentane mass concentration" />
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  <variable name="meta_2_methylpentane_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_2_methylpentane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
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    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
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    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.84." />
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  <variable name="v_2_methylpentane_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="ebas_framework_name" value="" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_2_methylpentane_ng_per_m3_precision meta_2_methylpentane_ng_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_regime" value="IMG" />
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    <attribute name="ebas_laboratory_code" value="FR07L" />
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    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.59. Detection limit converted from '26.0 pmol/mol' to '67.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.59." />
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  <variable name="meta_2_methylpropane_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="v_2_methylpropane_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_2_methylpropane_in_air" />
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    <attribute name="units" value="pmol/mol" />
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    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
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    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.59." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/2-methyl-propanemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="2-methyl-propane mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
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  <variable name="meta_2_methylpropane_ng_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_2_methylpropane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_2_methylpropane_pmol_per_mol_precision meta_2_methylpropane_pmol_per_mol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-methylpropane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
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    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/2-methyl-propaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="2-methyl-propane amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_temporal_resolution" value="PT0S" />
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    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
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  <variable name="meta_2_methylpropane_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_2_methylpropenal_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_2-methylpropenal_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_2_methylpropenal_pmol_per_mol_amean meta_2_methylpropenal_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
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    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-methylpropenal" />
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    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003127. Detection limit converted from '38.0 pmol/mol' to '0.1188 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003127. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'pmol/mol', conversion factor 319.782. Detection limit converted from '0.1188 ug/m3' at 273.15 K, 1013.25 hPa to '38.0 pmol/mol', conversion factor 319.782." />
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    <attribute name="actris_access_restriction" type="long" value="1" />
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    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
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  <variable name="meta_2_methylpropenal_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_2_methylpropenal_ug_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_2_methylpropenal_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_2_methylpropenal_ug_per_m3_amean meta_2_methylpropenal_ug_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-methylpropenal" />
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    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003127. Detection limit converted from '38.0 pmol/mol' to '0.1188 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003127." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/methacroleinmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="methacrolein mass concentration" />
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    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_2_methylpropenal_ug_per_m3_amean" shape="qc_2_methylpropenal_ug_per_m3_amean_flags time" type="int">
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    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_2_methylpropenal_ug_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_2_methylpropenal_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_2-methylpropenal_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_2_methylpropenal_pmol_per_mol_ExpUnc2s meta_2_methylpropenal_pmol_per_mol_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
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    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-methylpropenal" />
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    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
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    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
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  <variable name="v_2_methylpropenal_ug_per_m3_precision" shape="time" type="double">
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    <attribute name="standard_name" value="mass_concentration_of_2_methylpropenal_in_air" />
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    <attribute name="cell_methods" value="time: precision" />
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    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003127." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/methacroleinmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="methacrolein mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_2_methylpropenal_ug_per_m3_precision" shape="qc_2_methylpropenal_ug_per_m3_precision_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
  </variable>
  <variable name="meta_2_methylpropenal_ug_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_2_propanol_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_2-propanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_2_propanol_pmol_per_mol_amean meta_2_propanol_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-propanol" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="73.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002681. Detection limit converted from '73.0 pmol/mol' to '0.1957 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002681. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'pmol/mol', conversion factor 372.967. Detection limit converted from '0.1957 ug/m3' at 273.15 K, 1013.25 hPa to '73.0 pmol/mol', conversion factor 372.967." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/2-propanolamountfraction" />
    <attribute name="actris_variable_preferred_term" value="2-propanol amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_2_propanol_pmol_per_mol_amean" shape="qc_2_propanol_pmol_per_mol_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_2_propanol_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_2_propanol_ug_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_2_propanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_2_propanol_ug_per_m3_amean meta_2_propanol_ug_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-propanol" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="0.1957 ug/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002681. Detection limit converted from '73.0 pmol/mol' to '0.1957 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002681." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/2-propanolmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="2-propanol mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_2_propanol_ug_per_m3_amean" shape="qc_2_propanol_ug_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="meta_2_propanol_ug_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_2_propanol_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_2-propanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_2_propanol_pmol_per_mol_ExpUnc2s meta_2_propanol_pmol_per_mol_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-propanol" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
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    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002681. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'pmol/mol', conversion factor 372.967." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/2-propanolamountfraction" />
    <attribute name="actris_variable_preferred_term" value="2-propanol amount fraction" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_2_propanol_pmol_per_mol_ExpUnc2s" shape="qc_2_propanol_pmol_per_mol_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_2_propanol_pmol_per_mol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
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    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_2_propanol_ug_per_m3_ExpUnc2s meta_2_propanol_ug_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-propanol" />
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    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002681." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/2-propanolmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="2-propanol mass concentration" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_2-propanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
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    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-propanol" />
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    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_name" value="" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002681. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'pmol/mol', conversion factor 372.967." />
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  <variable name="meta_2_propanol_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="v_2_propanol_ug_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_2_propanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ancillary_variables" value="qc_2_propanol_ug_per_m3_precision meta_2_propanol_ug_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
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    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
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    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002681." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/2-propanolmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="2-propanol mass concentration" />
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  <variable name="meta_2_propanol_ug_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="v_3_buten_2_one_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_3-buten-2-one_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_3_buten_2_one_pmol_per_mol_amean meta_3_buten_2_one_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="3-buten-2-one" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003127. Detection limit converted from '50.0 pmol/mol' to '0.1564 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003127. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'pmol/mol', conversion factor 319.782. Detection limit converted from '0.1564 ug/m3' at 273.15 K, 1013.25 hPa to '50.0 pmol/mol', conversion factor 319.782." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/methylvinylketoneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="methyl vinyl ketone amount fraction" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
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  <variable name="meta_3_buten_2_one_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_3_buten_2_one_ug_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_3_buten_2_one_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_3_buten_2_one_ug_per_m3_amean meta_3_buten_2_one_ug_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
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    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
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    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_detection_limit" value="0.1564 ug/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003127. Detection limit converted from '50.0 pmol/mol' to '0.1564 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003127." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/methylvinylketonemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="methyl vinyl ketone mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_framework_preferred_term" value="" />
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    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_3_buten_2_one_ug_per_m3_amean" shape="qc_3_buten_2_one_ug_per_m3_amean_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
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  <variable name="meta_3_buten_2_one_ug_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_3_buten_2_one_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_3-buten-2-one_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_3_buten_2_one_pmol_per_mol_ExpUnc2s meta_3_buten_2_one_pmol_per_mol_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="3-buten-2-one" />
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    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
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    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003127. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'pmol/mol', conversion factor 319.782." />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
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    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ancillary_variables" value="qc_3_buten_2_one_ug_per_m3_ExpUnc2s meta_3_buten_2_one_ug_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
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    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
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    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
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    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003127." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/methylvinylketonemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="methyl vinyl ketone mass concentration" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
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    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
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  <variable name="meta_3_buten_2_one_ug_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_3-buten-2-one_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_3_buten_2_one_pmol_per_mol_precision meta_3_buten_2_one_pmol_per_mol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="3-buten-2-one" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
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    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003127. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'pmol/mol', conversion factor 319.782." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/methylvinylketoneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="methyl vinyl ketone amount fraction" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_access_restriction" type="long" value="1" />
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    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
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  <variable name="meta_3_buten_2_one_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_3_buten_2_one_ug_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_3_buten_2_one_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_3_buten_2_one_ug_per_m3_precision meta_3_buten_2_one_ug_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
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    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="3-buten-2-one" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
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    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_benzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
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    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="benzene" />
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    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.49. Detection limit converted from '15.0 pmol/mol' to '52.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.49." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/benzenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="benzene mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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  <variable name="qc_benzene_ng_per_m3_amean" shape="qc_benzene_ng_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
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  <variable name="meta_benzene_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_benzene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_benzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_benzene_pmol_per_mol_amean meta_benzene_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="benzene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="15.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/benzeneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="benzene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_benzene_pmol_per_mol_amean" shape="qc_benzene_pmol_per_mol_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_benzene_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_benzene_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_benzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_benzene_ng_per_m3_ExpUnc2s meta_benzene_ng_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="benzene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.49." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/benzenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="benzene mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_benzene_ng_per_m3_ExpUnc2s" shape="qc_benzene_ng_per_m3_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_benzene_ng_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_benzene_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_benzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_benzene_pmol_per_mol_ExpUnc2s meta_benzene_pmol_per_mol_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="benzene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/benzeneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="benzene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_benzene_pmol_per_mol_ExpUnc2s" shape="qc_benzene_pmol_per_mol_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_benzene_pmol_per_mol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_benzene_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_benzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_benzene_ng_per_m3_precision meta_benzene_ng_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="benzene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.49." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/benzenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="benzene mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_benzene_ng_per_m3_precision" shape="qc_benzene_ng_per_m3_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_benzene_ng_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_benzene_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_benzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_benzene_pmol_per_mol_precision meta_benzene_pmol_per_mol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="benzene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/benzeneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="benzene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_benzene_pmol_per_mol_precision" shape="qc_benzene_pmol_per_mol_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_benzene_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_butanone_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_butanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_butanone_pmol_per_mol_amean meta_butanone_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="butanone" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="50.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003217. Detection limit converted from '50.0 pmol/mol' to '0.1609 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003217. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'pmol/mol', conversion factor 310.841. Detection limit converted from '0.1609 ug/m3' at 273.15 K, 1013.25 hPa to '50.0 pmol/mol', conversion factor 310.841." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/methylethylketoneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="methyl ethyl ketone amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_butanone_pmol_per_mol_amean" shape="qc_butanone_pmol_per_mol_amean_flags time" type="int">
    <attribute name="units" value="1" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="meta_butanone_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_butanone_ug_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_butanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_butanone_ug_per_m3_amean meta_butanone_ug_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="butanone" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="0.1609 ug/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003217. Detection limit converted from '50.0 pmol/mol' to '0.1609 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003217." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/methylethylketonemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="methyl ethyl ketone mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_butanone_ug_per_m3_amean" shape="qc_butanone_ug_per_m3_amean_flags time" type="int">
    <attribute name="units" value="1" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="meta_butanone_ug_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_butanone_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_butanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_butanone_pmol_per_mol_ExpUnc2s meta_butanone_pmol_per_mol_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="butanone" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003217. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'pmol/mol', conversion factor 310.841." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/methylethylketoneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="methyl ethyl ketone amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_butanone_pmol_per_mol_ExpUnc2s" shape="qc_butanone_pmol_per_mol_ExpUnc2s_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_butanone_pmol_per_mol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_butanone_ug_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_butanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_butanone_ug_per_m3_ExpUnc2s meta_butanone_ug_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="butanone" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003217." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/methylethylketonemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="methyl ethyl ketone mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_butanone_ug_per_m3_ExpUnc2s" shape="qc_butanone_ug_per_m3_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_butanone_ug_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_butanone_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_butanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_butanone_pmol_per_mol_precision meta_butanone_pmol_per_mol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="butanone" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003217. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'pmol/mol', conversion factor 310.841." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/methylethylketoneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="methyl ethyl ketone amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_butanone_pmol_per_mol_precision" shape="qc_butanone_pmol_per_mol_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_butanone_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_butanone_ug_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_butanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_butanone_ug_per_m3_precision meta_butanone_ug_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="butanone" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.003217." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/methylethylketonemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="methyl ethyl ketone mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
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    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_butanone_ug_per_m3_precision" shape="qc_butanone_ug_per_m3_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_butanone_ug_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_cis_2_butene_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_cis-2-butene_in_air" />
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    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
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    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
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    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
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    <attribute name="actris_variable_preferred_term" value="(Z)-2-butene amount fraction" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="standard_name" value="mass_concentration_of_cis-2-butene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_cis_2_butene_ng_per_m3_precision meta_cis_2_butene_ng_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
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    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
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    <attribute name="ebas_regime" value="IMG" />
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    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
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    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
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    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
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    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
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    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.13. Detection limit converted from '10.0 pmol/mol' to '31.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.13." />
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  <variable name="meta_cis_2_pentene_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="v_cis_2_pentene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_cis_2_pentene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_cis_2_pentene_pmol_per_mol_amean meta_cis_2_pentene_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="cis-2-pentene" />
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    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
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    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="10.0 pmol/mol" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
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    <attribute name="actris_variable_preferred_term" value="(2Z)-2-pentene amount fraction" />
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    <attribute name="actris_access_restriction" type="long" value="1" />
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    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
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  <variable name="meta_cis_2_pentene_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
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    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
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    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="cis-2-pentene" />
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    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
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    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
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    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.13." />
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    <attribute name="units" value="1" />
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  <variable name="meta_cis_2_pentene_ng_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_cis_2_pentene_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
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    <attribute name="ebas_regime" value="IMG" />
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    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="v_cis_2_pentene_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_cis-2-pentene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_cis_2_pentene_ng_per_m3_precision meta_cis_2_pentene_ng_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="cis-2-pentene" />
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    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.13." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/-2Z-2-pentenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="(2Z)-2-pentene mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
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  <variable name="meta_cis_2_pentene_ng_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_cis_2_pentene_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_cis_2_pentene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_cis_2_pentene_pmol_per_mol_precision meta_cis_2_pentene_pmol_per_mol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="cis-2-pentene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/-2Z-2-penteneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="(2Z)-2-pentene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_framework_preferred_term" value="" />
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    <attribute name="actris_access_restriction" type="long" value="1" />
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    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_cis_2_pentene_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethanal_nmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethanal_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="qc_ethanal_nmol_per_mol_amean meta_ethanal_nmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethanal" />
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    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
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    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="0.224 nmol/mol" />
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    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.001965. Detection limit converted from '224.0 pmol/mol' to '0.4403 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.001965. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.50879. Detection limit converted from '0.4403 ug/m3' at 273.15 K, 1013.25 hPa to '0.224 nmol/mol', conversion factor 0.50879." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/acetaldehydeamountfraction" />
    <attribute name="actris_variable_preferred_term" value="acetaldehyde amount fraction" />
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    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_ethanal_nmol_per_mol_amean" shape="qc_ethanal_nmol_per_mol_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
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  <variable name="meta_ethanal_nmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethanal_ug_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ethanal_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_ethanal_ug_per_m3_amean meta_ethanal_ug_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
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    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethanal" />
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    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_calibration_scale" value="NPL" />
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    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
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    <attribute name="ebas_detection_limit" value="0.4403 ug/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.001965. Detection limit converted from '224.0 pmol/mol' to '0.4403 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.001965." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/acetaldehydemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="acetaldehyde mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_ethanal_ug_per_m3_amean" shape="qc_ethanal_ug_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethanal_ug_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethanal_nmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethanal_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="qc_ethanal_nmol_per_mol_ExpUnc2s meta_ethanal_nmol_per_mol_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
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    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.001965." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/acetaldehydemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="acetaldehyde mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethanal_ug_per_m3_precision" shape="qc_ethanal_ug_per_m3_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethanal_ug_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethane_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ethane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_ethane_ng_per_m3_amean meta_ethane_ng_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="161.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 1.34. Detection limit converted from '120.0 pmol/mol' to '161.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 1.34." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethanemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="ethane mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethane_ng_per_m3_amean" shape="qc_ethane_ng_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethane_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethane_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_ethane_pmol_per_mol_amean meta_ethane_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="120.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="ethane amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethane_pmol_per_mol_amean" shape="qc_ethane_pmol_per_mol_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethane_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethane_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ethane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_ethane_ng_per_m3_ExpUnc2s meta_ethane_ng_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 1.34." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethanemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="ethane mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethane_ng_per_m3_ExpUnc2s" shape="qc_ethane_ng_per_m3_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethane_ng_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethane_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_ethane_pmol_per_mol_ExpUnc2s meta_ethane_pmol_per_mol_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="ethane amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethane_pmol_per_mol_ExpUnc2s" shape="qc_ethane_pmol_per_mol_ExpUnc2s_flags time" type="int">
    <attribute name="units" value="1" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
  </variable>
  <variable name="meta_ethane_pmol_per_mol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethane_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ethane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_ethane_ng_per_m3_precision meta_ethane_ng_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 1.34." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethanemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="ethane mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethane_ng_per_m3_precision" shape="qc_ethane_ng_per_m3_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethane_ng_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethane_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_ethane_pmol_per_mol_precision meta_ethane_pmol_per_mol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="ethane amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethane_pmol_per_mol_precision" shape="qc_ethane_pmol_per_mol_precision_flags time" type="int">
    <attribute name="units" value="1" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
  </variable>
  <variable name="meta_ethane_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethanol_nmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="qc_ethanol_nmol_per_mol_amean meta_ethanol_nmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethanol" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="0.05 nmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002055. Detection limit converted from '50.0 pmol/mol' to '0.1028 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002055. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.486526. Detection limit converted from '0.1028 ug/m3' at 273.15 K, 1013.25 hPa to '0.05 nmol/mol', conversion factor 0.486526." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethanolamountfraction" />
    <attribute name="actris_variable_preferred_term" value="ethanol amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethanol_nmol_per_mol_amean" shape="qc_ethanol_nmol_per_mol_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethanol_nmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethanol_ug_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ethanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_ethanol_ug_per_m3_amean meta_ethanol_ug_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethanol" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="0.1028 ug/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002055. Detection limit converted from '50.0 pmol/mol' to '0.1028 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002055." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethanolmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="ethanol mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethanol_ug_per_m3_amean" shape="qc_ethanol_ug_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethanol_ug_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethanol_nmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="qc_ethanol_nmol_per_mol_ExpUnc2s meta_ethanol_nmol_per_mol_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethanol" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002055. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.486526." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethanolamountfraction" />
    <attribute name="actris_variable_preferred_term" value="ethanol amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethanol_nmol_per_mol_ExpUnc2s" shape="qc_ethanol_nmol_per_mol_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethanol_nmol_per_mol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethanol_ug_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ethanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_ethanol_ug_per_m3_ExpUnc2s meta_ethanol_ug_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethanol" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002055." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethanolmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="ethanol mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethanol_ug_per_m3_ExpUnc2s" shape="qc_ethanol_ug_per_m3_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethanol_ug_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethanol_nmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="qc_ethanol_nmol_per_mol_precision meta_ethanol_nmol_per_mol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethanol" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002055. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.486526." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethanolamountfraction" />
    <attribute name="actris_variable_preferred_term" value="ethanol amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethanol_nmol_per_mol_precision" shape="qc_ethanol_nmol_per_mol_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethanol_nmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethanol_ug_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ethanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_ethanol_ug_per_m3_precision meta_ethanol_ug_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethanol" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002055." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethanolmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="ethanol mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethanol_ug_per_m3_precision" shape="qc_ethanol_ug_per_m3_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethanol_ug_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethene_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_ethene_amean meta_ethene_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="147.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/etheneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="ethene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethene_amean" shape="qc_ethene_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethene_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethene_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_ethene_ExpUnc2s meta_ethene_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/etheneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="ethene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethene_ExpUnc2s" shape="qc_ethene_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethene_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethene_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_ethene_precision meta_ethene_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/etheneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="ethene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethene_precision" shape="qc_ethene_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethene_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethylbenzene_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethylbenzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_ethylbenzene_ng_per_m3_amean meta_ethylbenzene_ng_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethylbenzene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="76.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.74. Detection limit converted from '16.0 pmol/mol' to '76.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.74." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethylbenzenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="ethylbenzene mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethylbenzene_ng_per_m3_amean" shape="qc_ethylbenzene_ng_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethylbenzene_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethylbenzene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethylbenzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_ethylbenzene_pmol_per_mol_amean meta_ethylbenzene_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethylbenzene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="16.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethylbenzeneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="ethylbenzene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethylbenzene_pmol_per_mol_amean" shape="qc_ethylbenzene_pmol_per_mol_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethylbenzene_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethylbenzene_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethylbenzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_ethylbenzene_ng_per_m3_ExpUnc2s meta_ethylbenzene_ng_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethylbenzene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.74." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethylbenzenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="ethylbenzene mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethylbenzene_ng_per_m3_ExpUnc2s" shape="qc_ethylbenzene_ng_per_m3_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethylbenzene_ng_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethylbenzene_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethylbenzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_ethylbenzene_pmol_per_mol_ExpUnc2s meta_ethylbenzene_pmol_per_mol_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethylbenzene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethylbenzeneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="ethylbenzene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethylbenzene_pmol_per_mol_ExpUnc2s" shape="qc_ethylbenzene_pmol_per_mol_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethylbenzene_pmol_per_mol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethylbenzene_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethylbenzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_ethylbenzene_ng_per_m3_precision meta_ethylbenzene_ng_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethylbenzene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.74." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethylbenzenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="ethylbenzene mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethylbenzene_ng_per_m3_precision" shape="qc_ethylbenzene_ng_per_m3_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethylbenzene_ng_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethylbenzene_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethylbenzene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_ethylbenzene_pmol_per_mol_precision meta_ethylbenzene_pmol_per_mol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethylbenzene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
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    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethylbenzeneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="ethylbenzene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethylbenzene_pmol_per_mol_precision" shape="qc_ethylbenzene_pmol_per_mol_precision_flags time" type="int">
    <attribute name="units" value="1" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
  </variable>
  <variable name="meta_ethylbenzene_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethyne_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethyne_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_ethyne_amean meta_ethyne_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethyne" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="63.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethyneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="ethyne amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethyne_amean" shape="qc_ethyne_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethyne_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethyne_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethyne_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_ethyne_ExpUnc2s meta_ethyne_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethyne" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethyneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="ethyne amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethyne_ExpUnc2s" shape="qc_ethyne_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethyne_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethyne_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethyne_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_ethyne_precision meta_ethyne_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ethyne" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethyneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="ethyne amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_ethyne_precision" shape="qc_ethyne_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ethyne_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_isoprene_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_isoprene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_isoprene_ng_per_m3_amean meta_isoprene_ng_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="isoprene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="33.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.04. Detection limit converted from '11.0 pmol/mol' to '33.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.04." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/isoprenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="isoprene mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_framework_preferred_term" value="" />
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    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_isoprene_ng_per_m3_amean" shape="qc_isoprene_ng_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
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  <variable name="meta_isoprene_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_isoprene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_isoprene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_isoprene_pmol_per_mol_amean meta_isoprene_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="isoprene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
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    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/isopreneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="isoprene amount fraction" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_isoprene_pmol_per_mol_amean" shape="qc_isoprene_pmol_per_mol_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
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  <variable name="meta_isoprene_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
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    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_isoprene_ng_per_m3_ExpUnc2s meta_isoprene_ng_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
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    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="isoprene" />
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    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.04." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/isoprenemassconcentration" />
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  <variable name="meta_isoprene_ng_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_isoprene_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_isoprene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="isoprene" />
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    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/isopreneamountfraction" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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  <variable name="meta_isoprene_pmol_per_mol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_isoprene_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_isoprene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_isoprene_ng_per_m3_precision meta_isoprene_ng_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
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    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="isoprene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.04." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/isoprenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="isoprene mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_isoprene_ng_per_m3_precision" shape="qc_isoprene_ng_per_m3_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_isoprene_ng_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_isoprene_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_isoprene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_isoprene_pmol_per_mol_precision meta_isoprene_pmol_per_mol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="isoprene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/isopreneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="isoprene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_isoprene_pmol_per_mol_precision" shape="qc_isoprene_pmol_per_mol_precision_flags time" type="int">
    <attribute name="units" value="1" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
  </variable>
  <variable name="meta_isoprene_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_m_p_xylene_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_m-p-xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_m_p_xylene_ng_per_m3_amean meta_m_p_xylene_ng_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="m-p-xylene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="81.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.74. Detection limit converted from '17.0 pmol/mol' to '81.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.74." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/mDivp-xylenesmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="m/p-xylenes mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_m_p_xylene_ng_per_m3_amean" shape="qc_m_p_xylene_ng_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_m_p_xylene_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_m_p_xylene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_m_p_xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_m_p_xylene_pmol_per_mol_amean meta_m_p_xylene_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="m-p-xylene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="17.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/mDivp-xylenesamountfraction" />
    <attribute name="actris_variable_preferred_term" value="m/p-xylenes amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_m_p_xylene_pmol_per_mol_amean" shape="qc_m_p_xylene_pmol_per_mol_amean_flags time" type="int">
    <attribute name="units" value="1" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
  </variable>
  <variable name="meta_m_p_xylene_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_m_p_xylene_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_m-p-xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_m_p_xylene_ng_per_m3_ExpUnc2s meta_m_p_xylene_ng_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="m-p-xylene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.74." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/mDivp-xylenesmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="m/p-xylenes mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_m_p_xylene_ng_per_m3_ExpUnc2s" shape="qc_m_p_xylene_ng_per_m3_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_m_p_xylene_ng_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_m_p_xylene_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_m_p_xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_m_p_xylene_pmol_per_mol_ExpUnc2s meta_m_p_xylene_pmol_per_mol_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="m-p-xylene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
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    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/mDivp-xylenesamountfraction" />
    <attribute name="actris_variable_preferred_term" value="m/p-xylenes amount fraction" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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  <variable name="qc_m_p_xylene_pmol_per_mol_ExpUnc2s" shape="qc_m_p_xylene_pmol_per_mol_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_m_p_xylene_pmol_per_mol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_m_p_xylene_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_m-p-xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_m_p_xylene_ng_per_m3_precision meta_m_p_xylene_ng_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="m-p-xylene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.74." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/mDivp-xylenesmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="m/p-xylenes mass concentration" />
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  <variable name="qc_m_p_xylene_ng_per_m3_precision" shape="qc_m_p_xylene_ng_per_m3_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_m_p_xylene_ng_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_m_p_xylene_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_m_p_xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_m_p_xylene_pmol_per_mol_precision meta_m_p_xylene_pmol_per_mol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="m-p-xylene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/mDivp-xylenesamountfraction" />
    <attribute name="actris_variable_preferred_term" value="m/p-xylenes amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_m_p_xylene_pmol_per_mol_precision" shape="qc_m_p_xylene_pmol_per_mol_precision_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_m_p_xylene_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_methanol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_methanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_methanol_amean meta_methanol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="methanol" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="818.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/methanolamountfraction" />
    <attribute name="actris_variable_preferred_term" value="methanol amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_methanol_amean" shape="qc_methanol_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_methanol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_methanol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_methanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_methanol_ExpUnc2s meta_methanol_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="methanol" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/methanolamountfraction" />
    <attribute name="actris_variable_preferred_term" value="methanol amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_methanol_ExpUnc2s" shape="qc_methanol_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_methanol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_methanol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_methanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_methanol_precision meta_methanol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="methanol" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/methanolamountfraction" />
    <attribute name="actris_variable_preferred_term" value="methanol amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_methanol_precision" shape="qc_methanol_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_methanol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_butane_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-butane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_n_butane_ng_per_m3_amean meta_n_butane_ng_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-butane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
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    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
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    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
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    <attribute name="ebas_detection_limit" value="60.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.59. Detection limit converted from '23.0 pmol/mol' to '60.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.59." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-butanemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="n-butane mass concentration" />
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    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
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  <variable name="meta_n_butane_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_butane_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_butane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_n_butane_pmol_per_mol_amean meta_n_butane_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-butane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-butaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="n-butane amount fraction" />
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  <variable name="meta_n_butane_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-butane" />
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    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.59." />
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  <variable name="meta_n_butane_ng_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_butane_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_butane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
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    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-butane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
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    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-butaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="n-butane amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_n_butane_pmol_per_mol_ExpUnc2s" shape="qc_n_butane_pmol_per_mol_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
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  <variable name="meta_n_butane_pmol_per_mol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_butane_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-butane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_n_butane_ng_per_m3_precision meta_n_butane_ng_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-butane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
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    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.59." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-butanemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="n-butane mass concentration" />
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    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
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  <variable name="meta_n_butane_ng_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_butane_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_butane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_n_butane_pmol_per_mol_precision meta_n_butane_pmol_per_mol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-butane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
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  <variable name="qc_n_butane_pmol_per_mol_precision" shape="qc_n_butane_pmol_per_mol_precision_flags time" type="int">
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    <attribute name="standard_name" value="status_flag" />
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  <variable name="meta_n_butane_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_heptane_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-heptane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_n_heptane_ng_per_m3_amean meta_n_heptane_ng_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-heptane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.47. Detection limit converted from '13.0 pmol/mol' to '58.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.47." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-heptanemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="n-heptane mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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  <variable name="qc_n_heptane_ng_per_m3_amean" shape="qc_n_heptane_ng_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_n_heptane_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_heptane_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_heptane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_n_heptane_pmol_per_mol_amean meta_n_heptane_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-heptane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="13.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-heptaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="n-heptane amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_n_heptane_pmol_per_mol_amean" shape="qc_n_heptane_pmol_per_mol_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_n_heptane_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_heptane_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-heptane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_n_heptane_ng_per_m3_ExpUnc2s meta_n_heptane_ng_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-heptane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.47." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-heptanemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="n-heptane mass concentration" />
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    <attribute name="units" value="1" />
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  <variable name="meta_n_heptane_ng_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_heptane_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
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    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-heptane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
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    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
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    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
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  <variable name="meta_n_heptane_pmol_per_mol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_heptane_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-heptane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_n_heptane_ng_per_m3_precision meta_n_heptane_ng_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_sample_duration" value="45mn" />
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    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-heptane" />
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    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
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    <attribute name="actris_variable_preferred_term" value="n-heptane mass concentration" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_heptane_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_heptane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_n_heptane_pmol_per_mol_precision meta_n_heptane_pmol_per_mol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-heptane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-heptaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="n-heptane amount fraction" />
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  <variable name="meta_n_heptane_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="units" value="ng/m3" />
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    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
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    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-hexane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
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    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_name" value="" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
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    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.84. Detection limit converted from '10.0 pmol/mol' to '38.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.84." />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="v_n_hexane_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_hexane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
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    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-hexane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
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    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
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    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-hexaneamountfraction" />
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  <variable name="meta_n_hexane_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_hexane_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-hexane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_n_hexane_ng_per_m3_ExpUnc2s meta_n_hexane_ng_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-hexane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.84." />
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    <attribute name="actris_variable_preferred_term" value="n-hexane mass concentration" />
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  <variable name="meta_n_hexane_ng_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_hexane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
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    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-hexane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_name" value="" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-hexaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="n-hexane amount fraction" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="meta_n_hexane_pmol_per_mol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_hexane_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-hexane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_n_hexane_ng_per_m3_precision meta_n_hexane_ng_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-hexane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
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    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
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    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.84." />
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  <variable name="meta_n_hexane_ng_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="v_n_hexane_pmol_per_mol_precision" shape="time" type="double">
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    <attribute name="standard_name" value="mole_fraction_of_hexane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_n_hexane_pmol_per_mol_precision meta_n_hexane_pmol_per_mol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
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    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
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    <attribute name="ebas_matrix" value="air" />
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    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_n_hexane_pmol_per_mol_precision" shape="qc_n_hexane_pmol_per_mol_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_n_hexane_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_octane_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_n-octane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_n_octane_ng_per_m3_amean meta_n_octane_ng_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-octane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="92.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 5.10. Detection limit converted from '18.0 pmol/mol' to '92.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 5.10." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-octanemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="n-octane mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_n_octane_ng_per_m3_amean" shape="qc_n_octane_ng_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_n_octane_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_octane_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_octane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_n_octane_pmol_per_mol_amean meta_n_octane_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-octane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="18.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-octaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="n-octane amount fraction" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_n_octane_pmol_per_mol_amean" shape="qc_n_octane_pmol_per_mol_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_n_octane_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_octane_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_n-octane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_n_octane_ng_per_m3_ExpUnc2s meta_n_octane_ng_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-octane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
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    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 5.10." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-octanemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="n-octane mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_n_octane_ng_per_m3_ExpUnc2s" shape="qc_n_octane_ng_per_m3_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_n_octane_ng_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_octane_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_octane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_n_octane_pmol_per_mol_ExpUnc2s meta_n_octane_pmol_per_mol_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-octane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-octaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="n-octane amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_n_octane_pmol_per_mol_ExpUnc2s" shape="qc_n_octane_pmol_per_mol_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_n_octane_pmol_per_mol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_octane_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_n-octane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_n_octane_ng_per_m3_precision meta_n_octane_ng_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-octane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 5.10." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-octanemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="n-octane mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_n_octane_ng_per_m3_precision" shape="qc_n_octane_ng_per_m3_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="meta_n_octane_ng_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_octane_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_octane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_n_octane_pmol_per_mol_precision meta_n_octane_pmol_per_mol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
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    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-octane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
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    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-octaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="n-octane amount fraction" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_n_octane_pmol_per_mol_precision" shape="qc_n_octane_pmol_per_mol_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_n_octane_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_pentane_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-pentane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_n_pentane_ng_per_m3_amean meta_n_pentane_ng_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-pentane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
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    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_detection_limit" value="29.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.22. Detection limit converted from '9.0 pmol/mol' to '29.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.22." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-pentanemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="n-pentane mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_n_pentane_ng_per_m3_amean" shape="qc_n_pentane_ng_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_n_pentane_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_pentane_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_pentane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_n_pentane_pmol_per_mol_amean meta_n_pentane_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-pentane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="9.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-pentaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="n-pentane amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_n_pentane_pmol_per_mol_amean" shape="qc_n_pentane_pmol_per_mol_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_n_pentane_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_pentane_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-pentane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_n_pentane_ng_per_m3_ExpUnc2s meta_n_pentane_ng_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-pentane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.22." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-pentanemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="n-pentane mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_n_pentane_ng_per_m3_ExpUnc2s" shape="qc_n_pentane_ng_per_m3_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_n_pentane_ng_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_pentane_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_pentane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_n_pentane_pmol_per_mol_ExpUnc2s meta_n_pentane_pmol_per_mol_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-pentane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-pentaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="n-pentane amount fraction" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_n_pentane_pmol_per_mol_ExpUnc2s" shape="qc_n_pentane_pmol_per_mol_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_n_pentane_pmol_per_mol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_pentane_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-pentane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_n_pentane_ng_per_m3_precision meta_n_pentane_ng_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-pentane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.22." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-pentanemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="n-pentane mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_n_pentane_ng_per_m3_precision" shape="qc_n_pentane_ng_per_m3_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
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  <variable name="meta_n_pentane_ng_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_n_pentane_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_pentane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_n_pentane_pmol_per_mol_precision meta_n_pentane_pmol_per_mol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-pentane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/n-pentaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="n-pentane amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_n_pentane_pmol_per_mol_precision" shape="qc_n_pentane_pmol_per_mol_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_n_pentane_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_o_xylene_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_o-xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_o_xylene_ng_per_m3_amean meta_o_xylene_ng_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="o-xylene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="76.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.74. Detection limit converted from '16.0 pmol/mol' to '76.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.74." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/o-xylenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="o-xylene mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_o_xylene_ng_per_m3_amean" shape="qc_o_xylene_ng_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_o_xylene_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_o_xylene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_o_xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_o_xylene_pmol_per_mol_amean meta_o_xylene_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="o-xylene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="16.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/o-xyleneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="o-xylene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_o_xylene_pmol_per_mol_amean" shape="qc_o_xylene_pmol_per_mol_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_o_xylene_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_o_xylene_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_o-xylene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_o_xylene_ng_per_m3_ExpUnc2s meta_o_xylene_ng_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
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    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.74." />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
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    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
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    <attribute name="ebas_regime" value="IMG" />
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    <attribute name="ebas_matrix" value="air" />
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    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
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    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
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    <attribute name="cell_methods" value="time: precision" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
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    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.74." />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="standard_name" value="mole_fraction_of_o_xylene_in_air" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="o-xylene" />
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    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/o-xyleneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="o-xylene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_o_xylene_pmol_per_mol_precision" shape="qc_o_xylene_pmol_per_mol_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_o_xylene_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_propane_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_propane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_propane_ng_per_m3_amean meta_propane_ng_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="55.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 1.97. Detection limit converted from '28.0 pmol/mol' to '55.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 1.97." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/propanemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="propane mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_propane_ng_per_m3_amean" shape="qc_propane_ng_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_propane_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_propane_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_propane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_propane_pmol_per_mol_amean meta_propane_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="28.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/propaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="propane amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_propane_pmol_per_mol_amean" shape="qc_propane_pmol_per_mol_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_propane_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_propane_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_propane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_propane_ng_per_m3_ExpUnc2s meta_propane_ng_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 1.97." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/propanemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="propane mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_propane_ng_per_m3_ExpUnc2s" shape="qc_propane_ng_per_m3_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_propane_ng_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_propane_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_propane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_propane_pmol_per_mol_ExpUnc2s meta_propane_pmol_per_mol_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/propaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="propane amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_propane_pmol_per_mol_ExpUnc2s" shape="qc_propane_pmol_per_mol_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="meta_propane_pmol_per_mol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_propane_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_propane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_propane_ng_per_m3_precision meta_propane_ng_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 1.97." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/propanemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="propane mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_propane_ng_per_m3_precision" shape="qc_propane_ng_per_m3_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_propane_ng_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_propane_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_propane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_propane_pmol_per_mol_precision meta_propane_pmol_per_mol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propane" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/propaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="propane amount fraction" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_propane_pmol_per_mol_precision" shape="qc_propane_pmol_per_mol_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_propane_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_propanone_nmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_propanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="qc_propanone_nmol_per_mol_amean meta_propanone_nmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propanone" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="0.134 nmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002591. Detection limit converted from '134.0 pmol/mol' to '0.3472 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002591. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.385913. Detection limit converted from '0.3472 ug/m3' at 273.15 K, 1013.25 hPa to '0.134 nmol/mol', conversion factor 0.385913." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/acetoneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="acetone amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_propanone_nmol_per_mol_amean" shape="qc_propanone_nmol_per_mol_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_propanone_nmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_propanone_ug_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_propanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_propanone_ug_per_m3_amean meta_propanone_ug_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propanone" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="0.3472 ug/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002591. Detection limit converted from '134.0 pmol/mol' to '0.3472 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002591." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/acetonemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="acetone mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_propanone_ug_per_m3_amean" shape="qc_propanone_ug_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_propanone_ug_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_propanone_nmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_propanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="qc_propanone_nmol_per_mol_ExpUnc2s meta_propanone_nmol_per_mol_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propanone" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002591. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.385913." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/acetoneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="acetone amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_propanone_nmol_per_mol_ExpUnc2s" shape="qc_propanone_nmol_per_mol_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_propanone_nmol_per_mol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_propanone_ug_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_propanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_propanone_ug_per_m3_ExpUnc2s meta_propanone_ug_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propanone" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002591." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/acetonemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="acetone mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_propanone_ug_per_m3_ExpUnc2s" shape="qc_propanone_ug_per_m3_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="meta_propanone_ug_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_propanone_nmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_propanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="qc_propanone_nmol_per_mol_precision meta_propanone_nmol_per_mol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propanone" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002591. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.385913." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/acetoneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="acetone amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_propanone_nmol_per_mol_precision" shape="qc_propanone_nmol_per_mol_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_propanone_nmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_propanone_ug_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_propanone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_propanone_ug_per_m3_precision meta_propanone_ug_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propanone" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.002591." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/acetonemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="acetone mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_propanone_ug_per_m3_precision" shape="qc_propanone_ug_per_m3_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_propanone_ug_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_propene_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_propene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_propene_amean meta_propene_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="40.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/propeneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="propene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_propene_amean" shape="qc_propene_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_propene_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_propene_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_propene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_propene_ExpUnc2s meta_propene_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/propeneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="propene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_propene_ExpUnc2s" shape="qc_propene_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_propene_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_propene_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_propene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_propene_precision meta_propene_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="propene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/propeneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="propene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_propene_precision" shape="qc_propene_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_propene_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_toluene_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_toluene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_toluene_ng_per_m3_amean meta_toluene_ng_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="toluene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="74.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.11. Detection limit converted from '18.0 pmol/mol' to '74.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.11." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/toluenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="toluene mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_toluene_ng_per_m3_amean" shape="qc_toluene_ng_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_toluene_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_toluene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_toluene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_toluene_pmol_per_mol_amean meta_toluene_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="toluene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="18.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/tolueneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="toluene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_toluene_pmol_per_mol_amean" shape="qc_toluene_pmol_per_mol_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_toluene_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_toluene_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_toluene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_toluene_ng_per_m3_ExpUnc2s meta_toluene_ng_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="toluene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.11." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/toluenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="toluene mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_access_restriction" type="long" value="1" />
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    <attribute name="_FillValue" type="int" value="0" />
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    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
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  <variable name="meta_toluene_ng_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_toluene_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_toluene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_toluene_pmol_per_mol_ExpUnc2s meta_toluene_pmol_per_mol_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
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    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="toluene" />
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    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/tolueneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="toluene amount fraction" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_toluene_pmol_per_mol_ExpUnc2s" shape="qc_toluene_pmol_per_mol_ExpUnc2s_flags time" type="int">
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    <attribute name="units" value="1" />
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  <variable name="meta_toluene_pmol_per_mol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_toluene_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_toluene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
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    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
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    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="toluene" />
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    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.11." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/toluenemassconcentration" />
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  <variable name="meta_toluene_ng_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="v_toluene_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_toluene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
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    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
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    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="toluene" />
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    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
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    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/tolueneamountfraction" />
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  <variable name="qc_toluene_pmol_per_mol_precision" shape="qc_toluene_pmol_per_mol_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="meta_toluene_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_trans_2_butene_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_trans-2-butene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_trans_2_butene_ng_per_m3_amean meta_trans_2_butene_ng_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="trans-2-butene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="33.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.50. Detection limit converted from '13.0 pmol/mol' to '33.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.50." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/-E-2-butenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="(E)-2-butene mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
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  <variable name="qc_trans_2_butene_ng_per_m3_amean" shape="qc_trans_2_butene_ng_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_trans_2_butene_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_trans_2_butene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_trans_2_butene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_trans_2_butene_pmol_per_mol_amean meta_trans_2_butene_pmol_per_mol_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="trans-2-butene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
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    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit" value="13.0 pmol/mol" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/-E-2-buteneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="(E)-2-butene amount fraction" />
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  <variable name="qc_trans_2_butene_pmol_per_mol_amean" shape="qc_trans_2_butene_pmol_per_mol_amean_flags time" type="int">
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    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
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  <variable name="meta_trans_2_butene_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_trans_2_butene_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_trans_2_butene_ng_per_m3_ExpUnc2s meta_trans_2_butene_ng_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="trans-2-butene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_calibration_scale" value="NPL" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.50." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/-E-2-butenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="(E)-2-butene mass concentration" />
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  <variable name="qc_trans_2_butene_ng_per_m3_ExpUnc2s" shape="qc_trans_2_butene_ng_per_m3_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
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    <attribute name="units" value="1" />
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  <variable name="meta_trans_2_butene_ng_per_m3_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_trans_2_butene_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_trans_2_butene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_trans_2_butene_pmol_per_mol_ExpUnc2s meta_trans_2_butene_pmol_per_mol_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
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    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="trans-2-butene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
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    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/-E-2-buteneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="(E)-2-butene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_trans_2_butene_pmol_per_mol_ExpUnc2s" shape="qc_trans_2_butene_pmol_per_mol_ExpUnc2s_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
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  <variable name="meta_trans_2_butene_pmol_per_mol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_trans_2_butene_ng_per_m3_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_trans-2-butene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_trans_2_butene_ng_per_m3_precision meta_trans_2_butene_ng_per_m3_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="45mn" />
    <attribute name="ebas_station_code" value="FR0057U" />
    <attribute name="ebas_platform_code" value="FR0057S" />
    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
    <attribute name="ebas_station_altitude" value="140.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="trans-2-butene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
    <attribute name="ebas_method_ref" value="FR07L_COVO_Danube_IMP2024" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
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    <attribute name="ebas_calibration_standard_id" value="NPL D723268" />
    <attribute name="ebas_secondary_standard_id" value="Messer cylinder" />
    <attribute name="ebas_inlet_type" value="Stainless steel" />
    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit determined graphycally with the height of the noise and the height of the compound peak for low concentrations" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) and systematic errors (accuracy) Ref: http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.50." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/-E-2-butenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="(E)-2-butene mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
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    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_trans_2_butene_ng_per_m3_precision" shape="qc_trans_2_butene_ng_per_m3_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_trans_2_butene_ng_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_trans_2_butene_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_trans_2_butene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_trans_2_butene_pmol_per_mol_precision meta_trans_2_butene_pmol_per_mol_precision" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2026-03-19T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_code" value="FR0057U" />
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    <attribute name="ebas_station_name" value="Strasbourg (Danube)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" type="double" value="48.57278184" />
    <attribute name="ebas_station_longitude" type="double" value="7.76777534" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="trans-2-butene" />
    <attribute name="ebas_unit" value="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC_Agilent_Airserver_Kori_Markes_fr57" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+8890c GC/FID-FID" />
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    <attribute name="ebas_inlet_description" value="3-metters Sampling line (stainless steel sulfinert treated)" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. Values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;, &quot;Salameh, Therese, therese.salameh@mines-douai.fr, Ecole des Mines de Douai, EMD, SAGE Department, 941 rue Charles Bourseul, , F-59508, Douai, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Moreau, Felix, felix.moreau@imt-nord-europe.fr, Institut Mine Telecom Nord Europe, IMT NE, CERI EE, , 941 rue Charles Bourseul, 59500, Douai, France&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: CAMPAIGN. Request aknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Kori-xr dryer, ozone scrubber, the Messer cylinder contains the same NMHCs as the NPL cylinder and all the measured OVOC at 1 ppm diluted at 5 ppb during calibration" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/-E-2-buteneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="(E)-2-butene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_trans_2_butene_pmol_per_mol_precision" shape="qc_trans_2_butene_pmol_per_mol_precision_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_trans_2_butene_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="time" shape="time" type="double">
    <attribute name="long_name" value="time of measurement" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="standard" />
    <attribute name="bounds" value="time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="metadata_time" shape="metadata_time" type="double">
    <attribute name="long_name" value="time of ebas metadata intervals" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="standard" />
    <attribute name="bounds" value="metadata_time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
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</netcdf>
