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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 (hydrocarbons) at Kosetice (NAOK)" />
  <attribute name="summary" value="VOC (hydrocarbons) at Kosetice (NAOK). These measurements are gathered as a part of the following projects ACTRIS, EMEP and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ['2-methylbutane in air (mass_concentration_of_2-methylbutane_in_air)', '2-methylbutane in air (mole_fraction_of_2_methylbutane_in_air)', '2-methylpropane in air (mass_concentration_of_2-methylpropane_in_air)', '2-methylpropane in air (mole_fraction_of_2_methylpropane_in_air)', 'benzene in air (mole_fraction_of_benzene_in_air)', 'ethane in air (mass_concentration_of_ethane_in_air)', 'ethane in air (mole_fraction_of_ethane_in_air)', 'ethene in air (mole_fraction_of_ethene_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)', '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-pentane in air (mass_concentration_of_n-pentane_in_air)', 'n-pentane in air (mole_fraction_of_pentane_in_air)', 'propane in air (mass_concentration_of_propane_in_air)', 'propane in air (mole_fraction_of_propane_in_air)', 'propene in air (mole_fraction_of_propene_in_air)']" />
  <attribute name="keywords" value="&quot;Kosetice (NAOK)&quot; CZ0003R 2-methylbutane 2-methylpropane benzene ethane ethene ethyne isoprene n-butane n-heptane n-hexane n-pentane propane propene air ACTRIS EMEP mass_concentration_of_2-methylbutane_in_air mole_fraction_of_2_methylbutane_in_air mass_concentration_of_2-methylpropane_in_air mole_fraction_of_2_methylpropane_in_air mole_fraction_of_benzene_in_air mass_concentration_of_ethane_in_air mole_fraction_of_ethane_in_air mole_fraction_of_ethene_in_air mole_fraction_of_ethyne_in_air mass_concentration_of_isoprene_in_air mole_fraction_of_isoprene_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 mass_concentration_of_n-pentane_in_air mole_fraction_of_pentane_in_air mass_concentration_of_propane_in_air mole_fraction_of_propane_in_air mole_fraction_of_propene_in_air" />
  <attribute name="id" value="P6GM-G23R.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="ACTRIS, EMEP" />
  <attribute name="acknowledgement" value="" />
  <attribute name="doi" value="https://doi.org/10.48597/P6GM-G23R" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Holubova, A., Beck, M., ACTRIS, EMEP, 2026, VOC (hydrocarbons) at Kosetice (NAOK), data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/P6GM-G23R" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="CZ01L &quot;Czech Hydrometeorological Institute&quot; &quot;Na Sabatce 17, CZ-14306 PRAHA 4, Czech Republic&quot;" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2026-06-23T08:31:02.178249Z" />
  <attribute name="date_metadata_modified" value="2026-06-04T00:00:00Z" />
  <attribute name="creator_name" value="Adela Holubova, Martin Beck" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value=", martin.beck@chmi.cz" />
  <attribute name="creator_institution" value=", &quot;Czech Hydrometeorological Instute, Laboratory Libus, CHMI&quot;" />
  <attribute name="contributor_name" value="Lucie Skoloudova" />
  <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 (15.080278 49.573394 535)" />
  <attribute name="geospatial_lat_min" type="double" value="49.573394" />
  <attribute name="geospatial_lat_max" type="double" value="49.573394" />
  <attribute name="geospatial_lon_min" type="double" value="15.080278" />
  <attribute name="geospatial_lon_max" type="double" value="15.080278" />
  <attribute name="geospatial_vertical_min" type="double" value="535.0" />
  <attribute name="geospatial_vertical_max" type="double" value="535.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="time_coverage_start" value="2025-01-01T12:00:00Z" />
  <attribute name="time_coverage_end" value="2025-12-31T12:10:00Z" />
  <attribute name="time_coverage_duration" value="P0000-11-30T00:10:00" />
  <attribute name="time_coverage_resolution" value="P0000-00-04T00:00:00" />
  <attribute name="timezone" value="UTC" />
  <attribute name="ebas_data_definition" value="EBAS_1.1" />
  <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="ebas_citation" value="Holubova, A., Beck, M., ACTRIS, EMEP, 2026, VOC (hydrocarbons) at Kosetice (NAOK), data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/P6GM-G23R" />
  <attribute name="ebas_set_type_code" value="TU" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="P6GM-G23R.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/P6GM-G23R" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/P6GM-G23R" />
  <attribute name="ebas_file_creation" value="2026-06-23T08:36:06.239289Z" />
  <attribute name="ebas_export_state" value="2026-06-23T08:31:02.178249Z" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="2025-01-01T12:00:00.000000Z" />
  <attribute name="ebas_revision_date" value="2026-06-04T00:00:00.000000Z" />
  <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="1y" />
  <attribute name="ebas_resolution_code" value="4d" />
  <attribute name="ebas_sample_duration" value="10mn" />
  <attribute name="ebas_orig_time_res" value="10mn" />
  <attribute name="ebas_station_code" value="CZ0003R" />
  <attribute name="ebas_platform_code" value="CZ0003S" />
  <attribute name="ebas_station_name" value="Kosetice (NAOK)" />
  <attribute name="ebas_station_wdca_id" value="GAWACZ__KOS" />
  <attribute name="ebas_station_gaw_id" value="KOS" />
  <attribute name="ebas_station_gaw_name" value="Kosetice Observatory" />
  <attribute name="ebas_station_land_use" value="Agricultural" />
  <attribute name="ebas_station_setting" value="Rural" />
  <attribute name="ebas_station_gaw_type" value="R" />
  <attribute name="ebas_station_wmo_region" type="long" value="6" />
  <attribute name="ebas_station_latitude" type="double" value="49.573394" />
  <attribute name="ebas_station_longitude" type="double" value="15.080278" />
  <attribute name="ebas_station_altitude" value="535.0 m" />
  <attribute name="ebas_measurement_height" value="2.0 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_matrix" value="air" />
  <attribute name="ebas_laboratory_code" value="CZ01L" />
  <attribute name="ebas_instrument_type" value="steel_canister" />
  <attribute name="ebas_instrument_name" value="Andersen_instrument_Agilent_7890A" />
  <attribute name="ebas_instrument_manufacturer" value="Andersen" />
  <attribute name="ebas_instrument_model" value="unknown" />
  <attribute name="ebas_instrument_serial_number" value="CN10843028" />
  <attribute name="ebas_method_ref" value="CZ01L_T21AA_023_15" />
  <attribute name="ebas_standard_method" value="None" />
  <attribute name="ebas_calibration_scale" value="NPL" />
  <attribute name="ebas_inlet_type" value="Selective filtration" />
  <attribute name="ebas_inlet_description" value="Downward facing with hood" />
  <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 flag used" />
  <attribute name="ebas_zero_negative_values_code" value="Zero/negative 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="CZ01L, Czech Hydrometeorological Institute, , , &quot;Na Sabatce 17, CZ-14306 PRAHA 4, Czech Republic&quot;, , , , " />
  <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP" />
  <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, European Monitoring and Evaluation Programme" />
  <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
  <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth" />
  <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no" />
  <attribute name="ebas_originator" value="&quot;Holubova, Adela, , , , , , , , , &quot;, &quot;Beck, Martin, martin.beck@chmi.cz, Czech Hydrometeorological Instute, CHMI, Laboratory Libus, Na Sabatce 17, Na Sabatce 17, CZ-14306, Prague, Cz&quot;" />
  <attribute name="ebas_submitter" value="&quot;Skoloudova, Lucie, lucie.skoloudova@chmi.cz, Czech Hydrometeorological Instute, CHMI, AQIS, Prague, Na Sabatce 17, CZ-14306, Prague, Czech Republic&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 frameworks: ACTRIS, EMEP. Request acknowledgement details from data originator" />
  <attribute name="_NCProperties" value="version=2,netcdf=4.9.3,hdf5=1.14.6" />
  <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="92" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" 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_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_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_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_ethene_amean_flags" length="1" />
  <dimension name="qc_ethene_ExpUnc2s_flags" length="1" />
  <dimension name="qc_ethene_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_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_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_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_propene_amean_flags" length="1" />
  <dimension name="qc_propene_ExpUnc2s_flags" length="1" />
  <dimension name="qc_propene_precision_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2025-01-01T12:04:59Z" />
    <attribute name="time_coverage_end" value="2025-12-31T12:04:59Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="345600.0" />
    <attribute name="time_coverage_duration" value="P0Y0M364DT0H0M0.000S" />
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  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-06-26" />
    <attribute name="nciso_version" value="2.4.8" />
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  <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_2_methylbutane_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_2-methylbutane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_2_methylbutane_ng_per_m3_amean meta_2_methylbutane_ng_per_m3_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2026-06-04T00:00:00.000000Z" />
    <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="10mn" />
    <attribute name="ebas_orig_time_res" value="10mn" />
    <attribute name="ebas_station_code" value="CZ0003R" />
    <attribute name="ebas_platform_code" value="CZ0003S" />
    <attribute name="ebas_station_name" value="Kosetice (NAOK)" />
    <attribute name="ebas_station_wdca_id" value="GAWACZ__KOS" />
    <attribute name="ebas_station_gaw_id" value="KOS" />
    <attribute name="ebas_station_gaw_name" value="Kosetice Observatory" />
    <attribute name="ebas_station_land_use" value="Agricultural" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="49.573394" />
    <attribute name="ebas_station_longitude" type="double" value="15.080278" />
    <attribute name="ebas_station_altitude" value="535.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="2-methylbutane" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CZ01L" />
    <attribute name="ebas_instrument_type" value="steel_canister" />
    <attribute name="ebas_instrument_name" value="Andersen_instrument_Agilent_7890A" />
    <attribute name="ebas_instrument_manufacturer" value="Andersen" />
    <attribute name="ebas_instrument_model" value="unknown" />
    <attribute name="ebas_instrument_serial_number" value="CN10843028" />
    <attribute name="ebas_method_ref" value="CZ01L_T21AA_023_15" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_inlet_type" value="Selective filtration" />
    <attribute name="ebas_inlet_description" value="Downward facing with hood" />
    <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="45.0 ng/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit flag used" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative 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="CZ01L, Czech Hydrometeorological Institute, , , &quot;Na Sabatce 17, CZ-14306 PRAHA 4, Czech Republic&quot;, , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, European Monitoring and Evaluation Programme" />
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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 frameworks: ACTRIS, EMEP. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="According to the “Updated Measurement Guideline for NOx and VOCs” (Chapter 4.3.2), sampling into stainless steel canisters is recommended only for C2-C6 alkanes, isoprene and benzene. Ethene, propene, ethyne and n-heptane were systematically flagged due to limitations of the applied sampling method, which is not recommended for these compounds. However, after data validation, these measurements were considered reliable. Internally, these data points were flagged 0.660 (unspecified sampling anomaly, considered valid). However, since Flag 0.660 is not supported by the EBAS database, these values were reported using Flag 0.111 as the closest available alternative. In contrast, the compounds toluene, ethylbenzene, o-xylene and m+p-xylene (also not recommended for canister sampling) did not exhibit consistent or reliable concentration patterns during data validation. These data were therefore classified under Flag 0.659 (unspecified sampling anomaly, invalid data). As this flag is also not supported by the EBAS database, the data were reported using Flag 0.999 to indicate invalid or excluded values. -- 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 '28.0 pmol/mol' to '98.0 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_access_restriction" type="long" value="0" />
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  <variable name="qc_benzene_ng_per_m3_amean" shape="qc_benzene_ng_per_m3_amean_flags time" type="int">
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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" />
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    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="10mn" />
    <attribute name="ebas_orig_time_res" value="10mn" />
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    <attribute name="ebas_station_land_use" value="Agricultural" />
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    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
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    <attribute name="ebas_station_longitude" type="double" value="15.080278" />
    <attribute name="ebas_station_altitude" value="535.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 m" />
    <attribute name="ebas_regime" value="IMG" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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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="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="ebas_comment" value="According to the “Updated Measurement Guideline for NOx and VOCs” (Chapter 4.3.2), sampling into stainless steel canisters is recommended only for C2-C6 alkanes, isoprene and benzene. Ethene, propene, ethyne and n-heptane were systematically flagged due to limitations of the applied sampling method, which is not recommended for these compounds. However, after data validation, these measurements were considered reliable. Internally, these data points were flagged 0.660 (unspecified sampling anomaly, considered valid). However, since Flag 0.660 is not supported by the EBAS database, these values were reported using Flag 0.111 as the closest available alternative. In contrast, the compounds toluene, ethylbenzene, o-xylene and m+p-xylene (also not recommended for canister sampling) did not exhibit consistent or reliable concentration patterns during data validation. These data were therefore classified under Flag 0.659 (unspecified sampling anomaly, invalid data). As this flag is also not supported by the EBAS database, the data were reported using Flag 0.999 to indicate invalid or excluded values." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/propeneamountfraction" />
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  <variable name="qc_propene_amean" shape="qc_propene_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
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    <attribute name="missing_value" type="int" value="0" />
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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_propene_in_air" />
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    <attribute name="units" value="pmol/mol" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="long_name" value="time of ebas metadata intervals" />
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