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  <attribute name="Conventions" value="CF-1.8, ACDD-1.3" />
  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="VOC (hydrocarbons) at Mt Cimone" />
  <attribute name="keywords" value="mole_fraction_of_heptane_in_air, mass_concentration_of_n-pentane_in_air, o-xylene, mole_fraction_of_toluene_in_air, ethylbenzene, mass_concentration_of_2-2-4-trimethylpentane_in_air, 2-methylbutane, mole_fraction_of_m-p-xylene_in_air, GAW-WDCGG-node, mole_fraction_of_o-xylene_in_air, ACTRIS, 2-methylpropane, mole_fraction_of_2_methylbutane_in_air, mole_fraction_of_ethylbenzene_in_air, mole_fraction_of_n-octane_in_air, mole_fraction_of_butane_in_air, mole_fraction_of_o_xylene_in_air, IT0009R, mass_concentration_of_n-hexane_in_air, mole_fraction_of_benzene_in_air, mole_fraction_of_hexane_in_air, benzene, 2-2-4-trimethylpentane, air, n-heptane, mass_concentration_of_2-methylbutane_in_air, EMEP, propane, mole_fraction_of_octane_in_air, mole_fraction_of_224_trimethylpentane_in_air, m-p-xylene, mole_fraction_of_m_p_xylene_in_air, mole_fraction_of_pentane_in_air, toluene, mass_concentration_of_n-heptane_in_air, mole_fraction_of_propane_in_air, mole_fraction_of_2_methylpropane_in_air, mass_concentration_of_n-butane_in_air, Mt Cimone, n-butane, n-hexane, mole_fraction_of_ethyne_in_air, n-octane, ethyne, n-pentane" />
  <attribute name="id" value="PNJ8-HG7M.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="ACTRIS, EMEP, GAW-WDCGG-node" />
  <attribute name="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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
  <attribute name="doi" value="https://doi.org/10.48597/PNJ8-HG7M" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Maione, M., Arduini, J., Maione, M., Arduini, J., 2017, VOC (hydrocarbons) at Mt Cimone, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/PNJ8-HG7M" />
  <attribute name="summary" value="VOC (hydrocarbons) at Mt Cimone. These measurements are gathered as a part of the following projects ACTRIS, EMEP, GAW-WDCGG-node and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: 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), 2-2-4-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), 2-2-4-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-methylbutane in air (mass_concentration_of_2-methylbutane_in_air), 2-methylbutane in air (mole_fraction_of_2_methylbutane_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-methylpropane in air (mole_fraction_of_2_methylpropane_in_air), 2-methylpropane in air (mole_fraction_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), benzene in air (mole_fraction_of_benzene_in_air), benzene in air (mole_fraction_of_benzene_in_air), benzene in air (mole_fraction_of_benzene_in_air), benzene in air (mole_fraction_of_benzene_in_air), benzene in air (mole_fraction_of_benzene_in_air), ethylbenzene in air (mole_fraction_of_ethylbenzene_in_air), ethylbenzene in air (mole_fraction_of_ethylbenzene_in_air), ethylbenzene in air (mole_fraction_of_ethylbenzene_in_air), ethylbenzene in air (mole_fraction_of_ethylbenzene_in_air), ethylbenzene in air (mole_fraction_of_ethylbenzene_in_air), ethylbenzene in air (mole_fraction_of_ethylbenzene_in_air), ethyne in air (mole_fraction_of_ethyne_in_air), ethyne in air (mole_fraction_of_ethyne_in_air), ethyne in air (mole_fraction_of_ethyne_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), 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), 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), n-butane in air (mass_concentration_of_n-butane_in_air), n-butane in air (mole_fraction_of_butane_in_air), n-butane in air (mass_concentration_of_n-butane_in_air), n-butane in air (mole_fraction_of_butane_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-heptane in air (mass_concentration_of_n-heptane_in_air), n-heptane in air (mole_fraction_of_heptane_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-hexane in air (mass_concentration_of_n-hexane_in_air), n-hexane in air (mole_fraction_of_hexane_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-octane in air (mole_fraction_of_n-octane_in_air), n-octane in air (mole_fraction_of_octane_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), n-pentane in air (mass_concentration_of_n-pentane_in_air), n-pentane in air (mole_fraction_of_pentane_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), o-xylene in air (mole_fraction_of_o-xylene_in_air), o-xylene in air (mole_fraction_of_o_xylene_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 (mole_fraction_of_propane_in_air), propane in air (mole_fraction_of_propane_in_air), propane in air (mole_fraction_of_propane_in_air), toluene in air (mole_fraction_of_toluene_in_air), toluene in air (mole_fraction_of_toluene_in_air), toluene in air (mole_fraction_of_toluene_in_air), toluene in air (mole_fraction_of_toluene_in_air), toluene in air (mole_fraction_of_toluene_in_air), toluene in air (mole_fraction_of_toluene_in_air)" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="IT10L, University of Urbino" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2017-04-04T08:38:04 UTC" />
  <attribute name="date_metadata_modified" value="2017-04-04T08:38:04 UTC" />
  <attribute name="creator_name" value="Michela Maione, Jgor Arduini, Michela Maione, Jgor Arduini" />
  <attribute name="creator_type" value="person" />
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  <attribute name="contributor_name" value="Jgor Arduini, Jgor Arduini" />
  <attribute name="contributor_role" value="data submitter, 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 (44.183333 10.7 2165.0)" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="geospatial_lat_min" type="double" value="44.183333" />
  <attribute name="geospatial_lat_max" type="double" value="44.183333" />
  <attribute name="geospatial_lon_min" type="double" value="10.7" />
  <attribute name="geospatial_lon_max" type="double" value="10.7" />
  <attribute name="geospatial_vertical_min" type="double" value="2165.0" />
  <attribute name="geospatial_vertical_max" type="double" value="2165.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="time_coverage_start" value="2011-01-02T22:31:00 UTC" />
  <attribute name="time_coverage_end" value="2015-12-31T21:25:00 UTC" />
  <attribute name="time_coverage_duration" value="P0004-11-28T22:54:00" />
  <attribute name="time_coverage_resolution" value="P0000-00-00T02:00:00" />
  <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="Maione, M., Arduini, J., Maione, M., Arduini, J., 2017, VOC (hydrocarbons) at Mt Cimone, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/PNJ8-HG7M" />
  <attribute name="ebas_set_type_code" value="TI" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="PNJ8-HG7M.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/PNJ8-HG7M" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/PNJ8-HG7M" />
  <attribute name="ebas_file_creation" value="2024-02-21T04:29:00.382219 UTC" />
  <attribute name="ebas_export_state" value="2017-01-31T04:51:00.127000 UTC" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="20110102223100" />
  <attribute name="ebas_revision_date" value="20170404083804" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="5y" />
  <attribute name="ebas_resolution_code" value="2h" />
  <attribute name="ebas_sample_duration" value="40mn" />
  <attribute name="ebas_orig_time_res" value="40mn" />
  <attribute name="ebas_station_code" value="IT0009R" />
  <attribute name="ebas_platform_code" value="IT0009S" />
  <attribute name="ebas_station_name" value="Mt Cimone" />
  <attribute name="ebas_station_latitude" value="44.183333" />
  <attribute name="ebas_station_longitude" value="10.7" />
  <attribute name="ebas_station_altitude" value="2165.0 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="IT10L" />
  <attribute name="ebas_instrument_type" value="online_gc" />
  <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
  <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
  <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
  <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
  <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
  <attribute name="ebas_standard_method" value="None" />
  <attribute name="ebas_inlet_type" value="Hat or hood" />
  <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
  <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
  <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
  <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="IT10L, University of Urbino, , , , , , , " />
  <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
  <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
  <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
  <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
  <attribute name="ebas_originator" value="Arduini, Jgor, , , , , , , , , " />
  <attribute name="ebas_submitter" value="Arduini, Jgor, , , , , , , , , " />
  <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, GAW-WDCGG-node. Request acknowledgement 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="comment" value="{&#xA;    &quot;Data definition&quot;: &quot;EBAS_1.1&quot;,&#xA;    &quot;Data license&quot;: &quot;https://creativecommons.org/licenses/by/4.0/&quot;,&#xA;    &quot;Citation&quot;: &quot;Maione, M., Arduini, J., Maione, M., Arduini, J., 2017, VOC (hydrocarbons) at Mt Cimone, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/PNJ8-HG7M&quot;,&#xA;    &quot;Set type code&quot;: &quot;TI&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;PNJ8-HG7M.nc&quot;,&#xA;    &quot;Represents DOI&quot;: &quot;https://doi.org/10.48597/PNJ8-HG7M&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/PNJ8-HG7M&quot;,&#xA;    &quot;File creation&quot;: &quot;2024-02-21T04:29:00.382219 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2017-01-31T04:51:00.127000 UTC&quot;,&#xA;    &quot;Export filter&quot;: &quot;exclude-900,exclude-invalid&quot;,&#xA;    &quot;Startdate&quot;: &quot;20110102223100&quot;,&#xA;    &quot;Revision date&quot;: &quot;20170404083804&quot;,&#xA;    &quot;Data level&quot;: &quot;2&quot;,&#xA;    &quot;Period code&quot;: &quot;5y&quot;,&#xA;    &quot;Resolution code&quot;: &quot;2h&quot;,&#xA;    &quot;Sample duration&quot;: &quot;40mn&quot;,&#xA;    &quot;Orig. time res.&quot;: &quot;40mn&quot;,&#xA;    &quot;Station code&quot;: &quot;IT0009R&quot;,&#xA;    &quot;Platform code&quot;: &quot;IT0009S&quot;,&#xA;    &quot;Station name&quot;: &quot;Mt Cimone&quot;,&#xA;    &quot;Station latitude&quot;: &quot;44.183333&quot;,&#xA;    &quot;Station longitude&quot;: &quot;10.7&quot;,&#xA;    &quot;Station altitude&quot;: &quot;2165.0 m&quot;,&#xA;    &quot;Measurement height&quot;: &quot;2.0 m&quot;,&#xA;    &quot;Regime&quot;: &quot;IMG&quot;,&#xA;    &quot;Matrix&quot;: &quot;air&quot;,&#xA;    &quot;Laboratory code&quot;: &quot;IT10L&quot;,&#xA;    &quot;Instrument type&quot;: &quot;online_gc&quot;,&#xA;    &quot;Instrument name&quot;: &quot;GC-MS_6890-5975c_UNITY2-AIRSERVER2&quot;,&#xA;    &quot;Instrument manufacturer&quot;: &quot;MARKES+MARKES+Agilent+Agilent&quot;,&#xA;    &quot;Instrument model&quot;: &quot;Air Server+UNITY2+6890+5975C&quot;,&#xA;    &quot;Instrument serial number&quot;: &quot;CIMxxxxx&quot;,&#xA;    &quot;Method ref&quot;: &quot;IT10L_GPROSIM12_SETUPX1200&quot;,&#xA;    &quot;Standard method&quot;: &quot;None&quot;,&#xA;    &quot;Inlet type&quot;: &quot;Hat or hood&quot;,&#xA;    &quot;Inlet description&quot;: &quot;Downward facing with hood&quot;,&#xA;    &quot;Volume std. temperature&quot;: &quot;273.15 K&quot;,&#xA;    &quot;Volume std. pressure&quot;: &quot;1013.25 hPa&quot;,&#xA;    &quot;Detection limit expl.&quot;: &quot;Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms&quot;,&#xA;    &quot;Measurement uncertainty expl.&quot;: &quot;Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma&quot;,&#xA;    &quot;Zero/negative values code&quot;: &quot;Zero/negative impossible&quot;,&#xA;    &quot;Zero/negative values&quot;: &quot;Zero and neg. values may appear due to statistical variations at very low concentrations&quot;,&#xA;    &quot;Organization&quot;: &quot;IT10L, University of Urbino, , , , , , , &quot;,&#xA;    &quot;Framework acronym&quot;: &quot;ACTRIS, EMEP, GAW-WDCGG-node&quot;,&#xA;    &quot;Framework name&quot;: &quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node&quot;,&#xA;    &quot;Framework description&quot;: &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., 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., &quot;,&#xA;    &quot;Framework contact name&quot;: &quot;Cathrine Lund Myhre, Kjetil Tørseth, Ann Mari Fjæraa&quot;,&#xA;    &quot;Framework contact email&quot;: &quot;clm@nilu.no, kt@nilu.no, &quot;,&#xA;    &quot;Originator&quot;: &quot;Arduini, Jgor, , , , , , , , , &quot;,&#xA;    &quot;Submitter&quot;: &quot;Arduini, Jgor, , , , , , , , , &quot;,&#xA;    &quot;Acknowledgement&quot;: &quot;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, GAW-WDCGG-node. Request acknowledgement details from data originator&quot;&#xA;}" />
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  <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="6194" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="2" />
  <dimension name="2-2-4-trimethylpentane_ng_per_m3_amean_qc_flags" length="1" />
  <dimension name="2-2-4-trimethylpentane_pmol_per_mol_amean_qc_flags" length="1" />
  <dimension name="2-2-4-trimethylpentane_ng_per_m3_ExpUnc2s_qc_flags" length="1" />
  <dimension name="2-2-4-trimethylpentane_pmol_per_mol_ExpUnc2s_qc_flags" length="1" />
  <dimension name="2-2-4-trimethylpentane_ng_per_m3_precision_qc_flags" length="1" />
  <dimension name="2-2-4-trimethylpentane_pmol_per_mol_precision_qc_flags" length="1" />
  <dimension name="2-methylbutane_ng_per_m3_amean_qc_flags" length="1" />
  <dimension name="2-methylbutane_pmol_per_mol_amean_qc_flags" length="1" />
  <dimension name="2-methylbutane_ng_per_m3_ExpUnc2s_qc_flags" length="1" />
  <dimension name="2-methylbutane_pmol_per_mol_ExpUnc2s_qc_flags" length="1" />
  <dimension name="2-methylbutane_ng_per_m3_precision_qc_flags" length="1" />
  <dimension name="2-methylbutane_pmol_per_mol_precision_qc_flags" length="1" />
  <dimension name="2-methylpropane_amean_qc_flags" length="1" />
  <dimension name="2-methylpropane_ExpUnc2s_qc_flags" length="1" />
  <dimension name="2-methylpropane_precision_qc_flags" length="1" />
  <dimension name="benzene_ng_per_m3_amean_qc_flags" length="1" />
  <dimension name="benzene_pmol_per_mol_amean_qc_flags" length="1" />
  <dimension name="benzene_ng_per_m3_ExpUnc2s_qc_flags" length="1" />
  <dimension name="benzene_pmol_per_mol_ExpUnc2s_qc_flags" length="1" />
  <dimension name="benzene_ng_per_m3_precision_qc_flags" length="1" />
  <dimension name="benzene_pmol_per_mol_precision_qc_flags" length="1" />
  <dimension name="ethylbenzene_ng_per_m3_amean_qc_flags" length="1" />
  <dimension name="ethylbenzene_pmol_per_mol_amean_qc_flags" length="1" />
  <dimension name="ethylbenzene_ng_per_m3_ExpUnc2s_qc_flags" length="1" />
  <dimension name="ethylbenzene_pmol_per_mol_ExpUnc2s_qc_flags" length="1" />
  <dimension name="ethylbenzene_ng_per_m3_precision_qc_flags" length="1" />
  <dimension name="ethylbenzene_pmol_per_mol_precision_qc_flags" length="1" />
  <dimension name="ethyne_amean_qc_flags" length="1" />
  <dimension name="ethyne_ExpUnc2s_qc_flags" length="1" />
  <dimension name="ethyne_precision_qc_flags" length="1" />
  <dimension name="m-p-xylene_ng_per_m3_amean_qc_flags" length="1" />
  <dimension name="m-p-xylene_pmol_per_mol_amean_qc_flags" length="1" />
  <dimension name="m-p-xylene_ng_per_m3_ExpUnc2s_qc_flags" length="1" />
  <dimension name="m-p-xylene_pmol_per_mol_ExpUnc2s_qc_flags" length="1" />
  <dimension name="m-p-xylene_ng_per_m3_precision_qc_flags" length="1" />
  <dimension name="m-p-xylene_pmol_per_mol_precision_qc_flags" length="1" />
  <dimension name="n-butane_ng_per_m3_amean_qc_flags" length="1" />
  <dimension name="n-butane_pmol_per_mol_amean_qc_flags" length="1" />
  <dimension name="n-butane_ng_per_m3_ExpUnc2s_qc_flags" length="1" />
  <dimension name="n-butane_pmol_per_mol_ExpUnc2s_qc_flags" length="1" />
  <dimension name="n-butane_ng_per_m3_precision_qc_flags" length="1" />
  <dimension name="n-butane_pmol_per_mol_precision_qc_flags" length="1" />
  <dimension name="n-heptane_ng_per_m3_amean_qc_flags" length="1" />
  <dimension name="n-heptane_pmol_per_mol_amean_qc_flags" length="1" />
  <dimension name="n-heptane_ng_per_m3_ExpUnc2s_qc_flags" length="1" />
  <dimension name="n-heptane_pmol_per_mol_ExpUnc2s_qc_flags" length="1" />
  <dimension name="n-heptane_ng_per_m3_precision_qc_flags" length="1" />
  <dimension name="n-heptane_pmol_per_mol_precision_qc_flags" length="1" />
  <dimension name="n-hexane_ng_per_m3_amean_qc_flags" length="1" />
  <dimension name="n-hexane_pmol_per_mol_amean_qc_flags" length="1" />
  <dimension name="n-hexane_ng_per_m3_ExpUnc2s_qc_flags" length="1" />
  <dimension name="n-hexane_pmol_per_mol_ExpUnc2s_qc_flags" length="1" />
  <dimension name="n-hexane_ng_per_m3_precision_qc_flags" length="1" />
  <dimension name="n-hexane_pmol_per_mol_precision_qc_flags" length="1" />
  <dimension name="n-octane_ng_per_m3_amean_qc_flags" length="1" />
  <dimension name="n-octane_pmol_per_mol_amean_qc_flags" length="1" />
  <dimension name="n-octane_ng_per_m3_ExpUnc2s_qc_flags" length="1" />
  <dimension name="n-octane_pmol_per_mol_ExpUnc2s_qc_flags" length="1" />
  <dimension name="n-octane_ng_per_m3_precision_qc_flags" length="1" />
  <dimension name="n-octane_pmol_per_mol_precision_qc_flags" length="1" />
  <dimension name="n-pentane_ng_per_m3_amean_qc_flags" length="1" />
  <dimension name="n-pentane_pmol_per_mol_amean_qc_flags" length="1" />
  <dimension name="n-pentane_ng_per_m3_ExpUnc2s_qc_flags" length="1" />
  <dimension name="n-pentane_pmol_per_mol_ExpUnc2s_qc_flags" length="1" />
  <dimension name="n-pentane_ng_per_m3_precision_qc_flags" length="1" />
  <dimension name="n-pentane_pmol_per_mol_precision_qc_flags" length="1" />
  <dimension name="o-xylene_ng_per_m3_amean_qc_flags" length="1" />
  <dimension name="o-xylene_pmol_per_mol_amean_qc_flags" length="1" />
  <dimension name="o-xylene_ng_per_m3_ExpUnc2s_qc_flags" length="1" />
  <dimension name="o-xylene_pmol_per_mol_ExpUnc2s_qc_flags" length="1" />
  <dimension name="o-xylene_ng_per_m3_precision_qc_flags" length="1" />
  <dimension name="o-xylene_pmol_per_mol_precision_qc_flags" length="1" />
  <dimension name="propane_amean_qc_flags" length="1" />
  <dimension name="propane_ExpUnc2s_qc_flags" length="1" />
  <dimension name="propane_precision_qc_flags" length="1" />
  <dimension name="toluene_ng_per_m3_amean_qc_flags" length="1" />
  <dimension name="toluene_pmol_per_mol_amean_qc_flags" length="1" />
  <dimension name="toluene_ng_per_m3_ExpUnc2s_qc_flags" length="1" />
  <dimension name="toluene_pmol_per_mol_ExpUnc2s_qc_flags" length="1" />
  <dimension name="toluene_ng_per_m3_precision_qc_flags" length="1" />
  <dimension name="toluene_pmol_per_mol_precision_qc_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2011-01-02T22:50:59Z" />
    <attribute name="time_coverage_end" value="2015-12-31T21:04:59Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="25446.0" />
    <attribute name="time_coverage_duration" value="P0Y0M1823DT22H14M0.000S" />
  </group>
  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-04-09" />
    <attribute name="nciso_version" value="2.4.7" />
  </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="2-2-4-trimethylpentane_ng_per_m3_amean" 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="2-2-4-trimethylpentane_ng_per_m3_amean_qc 2-2-4-trimethylpentane_ng_per_m3_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 5.10." />
  </variable>
  <variable name="2-2-4-trimethylpentane_ng_per_m3_amean_qc" shape="2-2-4-trimethylpentane_ng_per_m3_amean_qc_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="2-2-4-trimethylpentane_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="2-2-4-trimethylpentane_pmol_per_mol_amean_qc 2-2-4-trimethylpentane_pmol_per_mol_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="2-2-4-trimethylpentane_pmol_per_mol_amean_qc" shape="2-2-4-trimethylpentane_pmol_per_mol_amean_qc_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="2-2-4-trimethylpentane_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="2-2-4-trimethylpentane_ng_per_m3_ExpUnc2s_qc 2-2-4-trimethylpentane_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 5.10." />
  </variable>
  <variable name="2-2-4-trimethylpentane_ng_per_m3_ExpUnc2s_qc" shape="2-2-4-trimethylpentane_ng_per_m3_ExpUnc2s_qc_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="2-2-4-trimethylpentane_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="2-2-4-trimethylpentane_pmol_per_mol_ExpUnc2s_qc 2-2-4-trimethylpentane_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="2-2-4-trimethylpentane_pmol_per_mol_ExpUnc2s_qc" shape="2-2-4-trimethylpentane_pmol_per_mol_ExpUnc2s_qc_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="2-2-4-trimethylpentane_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="2-2-4-trimethylpentane_ng_per_m3_precision_qc 2-2-4-trimethylpentane_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 5.10." />
  </variable>
  <variable name="2-2-4-trimethylpentane_ng_per_m3_precision_qc" shape="2-2-4-trimethylpentane_ng_per_m3_precision_qc_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="2-2-4-trimethylpentane_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="2-2-4-trimethylpentane_pmol_per_mol_precision" 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="2-2-4-trimethylpentane_pmol_per_mol_precision_qc 2-2-4-trimethylpentane_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="2-2-4-trimethylpentane_pmol_per_mol_precision_qc" shape="2-2-4-trimethylpentane_pmol_per_mol_precision_qc_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="2-2-4-trimethylpentane_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="2-methylbutane_ng_per_m3_amean_qc 2-methylbutane_ng_per_m3_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.219." />
  </variable>
  <variable name="2-methylbutane_ng_per_m3_amean_qc" shape="2-methylbutane_ng_per_m3_amean_qc_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="2-methylbutane_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="2-methylbutane_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_2_methylbutane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="2-methylbutane_pmol_per_mol_amean_qc 2-methylbutane_pmol_per_mol_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 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="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="2-methylbutane_pmol_per_mol_amean_qc" shape="2-methylbutane_pmol_per_mol_amean_qc_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="2-methylbutane_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="2-methylbutane_ng_per_m3_ExpUnc2s" 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="2-methylbutane_ng_per_m3_ExpUnc2s_qc 2-methylbutane_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.219." />
  </variable>
  <variable name="2-methylbutane_ng_per_m3_ExpUnc2s_qc" shape="2-methylbutane_ng_per_m3_ExpUnc2s_qc_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="2-methylbutane_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="2-methylbutane_pmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_2_methylbutane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="2-methylbutane_pmol_per_mol_ExpUnc2s_qc 2-methylbutane_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 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="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="2-methylbutane_pmol_per_mol_ExpUnc2s_qc" shape="2-methylbutane_pmol_per_mol_ExpUnc2s_qc_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="2-methylbutane_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="2-methylbutane_ng_per_m3_precision" 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="2-methylbutane_ng_per_m3_precision_qc 2-methylbutane_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.219." />
  </variable>
  <variable name="2-methylbutane_ng_per_m3_precision_qc" shape="2-methylbutane_ng_per_m3_precision_qc_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="2-methylbutane_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="2-methylbutane_pmol_per_mol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_2_methylbutane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="2-methylbutane_pmol_per_mol_precision_qc 2-methylbutane_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 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="pmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="2-methylbutane_pmol_per_mol_precision_qc" shape="2-methylbutane_pmol_per_mol_precision_qc_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="2-methylbutane_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="2-methylpropane_amean" shape="time" type="double">
    <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="2-methylpropane_amean_qc 2-methylpropane_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="2-methylpropane_amean_qc" shape="2-methylpropane_amean_qc_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="2-methylpropane_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="2-methylpropane_ExpUnc2s" shape="time" type="double">
    <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="2-methylpropane_ExpUnc2s_qc 2-methylpropane_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="2-methylpropane_ExpUnc2s_qc" shape="2-methylpropane_ExpUnc2s_qc_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="2-methylpropane_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="2-methylpropane_precision" shape="time" type="double">
    <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="2-methylpropane_precision_qc 2-methylpropane_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="2-methylpropane_precision_qc" shape="2-methylpropane_precision_qc_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="2-methylpropane_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="benzene_ng_per_m3_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="ng/m3" />
    <attribute name="ancillary_variables" value="benzene_ng_per_m3_amean_qc benzene_ng_per_m3_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.485." />
  </variable>
  <variable name="benzene_ng_per_m3_amean_qc" shape="benzene_ng_per_m3_amean_qc_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="benzene_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="benzene_pmol_per_mol_amean_qc benzene_pmol_per_mol_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="benzene_pmol_per_mol_amean_qc" shape="benzene_pmol_per_mol_amean_qc_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="benzene_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="benzene_ng_per_m3_ExpUnc2s_qc benzene_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.485." />
  </variable>
  <variable name="benzene_ng_per_m3_ExpUnc2s_qc" shape="benzene_ng_per_m3_ExpUnc2s_qc_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="benzene_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="benzene_pmol_per_mol_ExpUnc2s_qc benzene_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="benzene_pmol_per_mol_ExpUnc2s_qc" shape="benzene_pmol_per_mol_ExpUnc2s_qc_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="benzene_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="benzene_ng_per_m3_precision_qc benzene_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.485." />
  </variable>
  <variable name="benzene_ng_per_m3_precision_qc" shape="benzene_ng_per_m3_precision_qc_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="benzene_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="benzene_pmol_per_mol_precision_qc benzene_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="benzene_pmol_per_mol_precision_qc" shape="benzene_pmol_per_mol_precision_qc_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="benzene_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="ethylbenzene_ng_per_m3_amean_qc ethylbenzene_ng_per_m3_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.737." />
  </variable>
  <variable name="ethylbenzene_ng_per_m3_amean_qc" shape="ethylbenzene_ng_per_m3_amean_qc_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="ethylbenzene_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="ethylbenzene_pmol_per_mol_amean_qc ethylbenzene_pmol_per_mol_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="ethylbenzene_pmol_per_mol_amean_qc" shape="ethylbenzene_pmol_per_mol_amean_qc_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="ethylbenzene_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="ethylbenzene_ng_per_m3_ExpUnc2s_qc ethylbenzene_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.737." />
  </variable>
  <variable name="ethylbenzene_ng_per_m3_ExpUnc2s_qc" shape="ethylbenzene_ng_per_m3_ExpUnc2s_qc_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="ethylbenzene_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="ethylbenzene_pmol_per_mol_ExpUnc2s_qc ethylbenzene_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="ethylbenzene_pmol_per_mol_ExpUnc2s_qc" shape="ethylbenzene_pmol_per_mol_ExpUnc2s_qc_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="ethylbenzene_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="ethylbenzene_ng_per_m3_precision_qc ethylbenzene_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.737." />
  </variable>
  <variable name="ethylbenzene_ng_per_m3_precision_qc" shape="ethylbenzene_ng_per_m3_precision_qc_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="ethylbenzene_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="ethylbenzene_pmol_per_mol_precision_qc ethylbenzene_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="ethylbenzene_pmol_per_mol_precision_qc" shape="ethylbenzene_pmol_per_mol_precision_qc_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="ethylbenzene_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="ethyne_amean_qc ethyne_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="ethyne_amean_qc" shape="ethyne_amean_qc_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="ethyne_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="ethyne_ExpUnc2s_qc ethyne_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="ethyne_ExpUnc2s_qc" shape="ethyne_ExpUnc2s_qc_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="ethyne_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="ethyne_precision_qc ethyne_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="ethyne_precision_qc" shape="ethyne_precision_qc_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="ethyne_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="m-p-xylene_ng_per_m3_amean_qc m-p-xylene_ng_per_m3_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.737." />
  </variable>
  <variable name="m-p-xylene_ng_per_m3_amean_qc" shape="m-p-xylene_ng_per_m3_amean_qc_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="m-p-xylene_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="m-p-xylene_pmol_per_mol_amean_qc m-p-xylene_pmol_per_mol_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="m-p-xylene_pmol_per_mol_amean_qc" shape="m-p-xylene_pmol_per_mol_amean_qc_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="m-p-xylene_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="m-p-xylene_ng_per_m3_ExpUnc2s_qc m-p-xylene_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.737." />
  </variable>
  <variable name="m-p-xylene_ng_per_m3_ExpUnc2s_qc" shape="m-p-xylene_ng_per_m3_ExpUnc2s_qc_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="m-p-xylene_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="m-p-xylene_pmol_per_mol_ExpUnc2s_qc m-p-xylene_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="m-p-xylene_pmol_per_mol_ExpUnc2s_qc" shape="m-p-xylene_pmol_per_mol_ExpUnc2s_qc_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="m-p-xylene_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="m-p-xylene_ng_per_m3_precision_qc m-p-xylene_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.737." />
  </variable>
  <variable name="m-p-xylene_ng_per_m3_precision_qc" shape="m-p-xylene_ng_per_m3_precision_qc_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="m-p-xylene_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="m-p-xylene_pmol_per_mol_precision_qc m-p-xylene_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="m-p-xylene_pmol_per_mol_precision_qc" shape="m-p-xylene_pmol_per_mol_precision_qc_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="m-p-xylene_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-butane_ng_per_m3_amean_qc n-butane_ng_per_m3_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.593." />
  </variable>
  <variable name="n-butane_ng_per_m3_amean_qc" shape="n-butane_ng_per_m3_amean_qc_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="n-butane_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-butane_pmol_per_mol_amean_qc n-butane_pmol_per_mol_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="n-butane_pmol_per_mol_amean_qc" shape="n-butane_pmol_per_mol_amean_qc_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="n-butane_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-butane_ng_per_m3_ExpUnc2s" 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="n-butane_ng_per_m3_ExpUnc2s_qc n-butane_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.593." />
  </variable>
  <variable name="n-butane_ng_per_m3_ExpUnc2s_qc" shape="n-butane_ng_per_m3_ExpUnc2s_qc_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="n-butane_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="n-butane_pmol_per_mol_ExpUnc2s_qc n-butane_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="n-butane_pmol_per_mol_ExpUnc2s_qc" shape="n-butane_pmol_per_mol_ExpUnc2s_qc_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="n-butane_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-butane_ng_per_m3_precision_qc n-butane_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.593." />
  </variable>
  <variable name="n-butane_ng_per_m3_precision_qc" shape="n-butane_ng_per_m3_precision_qc_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="n-butane_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-butane_pmol_per_mol_precision_qc n-butane_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="n-butane_pmol_per_mol_precision_qc" shape="n-butane_pmol_per_mol_precision_qc_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="n-butane_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-heptane_ng_per_m3_amean_qc n-heptane_ng_per_m3_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.471." />
  </variable>
  <variable name="n-heptane_ng_per_m3_amean_qc" shape="n-heptane_ng_per_m3_amean_qc_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="n-heptane_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-heptane_pmol_per_mol_amean_qc n-heptane_pmol_per_mol_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="n-heptane_pmol_per_mol_amean_qc" shape="n-heptane_pmol_per_mol_amean_qc_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="n-heptane_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-heptane_ng_per_m3_ExpUnc2s_qc n-heptane_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.471." />
  </variable>
  <variable name="n-heptane_ng_per_m3_ExpUnc2s_qc" shape="n-heptane_ng_per_m3_ExpUnc2s_qc_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="n-heptane_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-heptane_pmol_per_mol_ExpUnc2s" 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="n-heptane_pmol_per_mol_ExpUnc2s_qc n-heptane_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="n-heptane_pmol_per_mol_ExpUnc2s_qc" shape="n-heptane_pmol_per_mol_ExpUnc2s_qc_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="n-heptane_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-heptane_ng_per_m3_precision_qc n-heptane_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.471." />
  </variable>
  <variable name="n-heptane_ng_per_m3_precision_qc" shape="n-heptane_ng_per_m3_precision_qc_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="n-heptane_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-heptane_pmol_per_mol_precision_qc n-heptane_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="n-heptane_pmol_per_mol_precision_qc" shape="n-heptane_pmol_per_mol_precision_qc_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="n-heptane_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-hexane_ng_per_m3_amean" 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="n-hexane_ng_per_m3_amean_qc n-hexane_ng_per_m3_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.845." />
  </variable>
  <variable name="n-hexane_ng_per_m3_amean_qc" shape="n-hexane_ng_per_m3_amean_qc_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="n-hexane_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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" />
    <attribute name="ancillary_variables" value="n-hexane_pmol_per_mol_amean_qc n-hexane_pmol_per_mol_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 m" />
    <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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="n-hexane_pmol_per_mol_amean_qc" shape="n-hexane_pmol_per_mol_amean_qc_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="n-hexane_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-hexane_ng_per_m3_ExpUnc2s_qc n-hexane_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.845." />
  </variable>
  <variable name="n-hexane_ng_per_m3_ExpUnc2s_qc" shape="n-hexane_ng_per_m3_ExpUnc2s_qc_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="n-hexane_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-hexane_pmol_per_mol_ExpUnc2s" 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" />
    <attribute name="ancillary_variables" value="n-hexane_pmol_per_mol_ExpUnc2s_qc n-hexane_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 m" />
    <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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="n-hexane_pmol_per_mol_ExpUnc2s_qc" shape="n-hexane_pmol_per_mol_ExpUnc2s_qc_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="n-hexane_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-hexane_ng_per_m3_precision_qc n-hexane_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.845." />
  </variable>
  <variable name="n-hexane_ng_per_m3_precision_qc" shape="n-hexane_ng_per_m3_precision_qc_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="n-hexane_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="n-hexane_pmol_per_mol_precision" 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" />
    <attribute name="ancillary_variables" value="n-hexane_pmol_per_mol_precision_qc n-hexane_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 m" />
    <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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="n-hexane_pmol_per_mol_precision_qc" shape="n-hexane_pmol_per_mol_precision_qc_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="n-hexane_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-octane_ng_per_m3_amean_qc n-octane_ng_per_m3_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 5.10." />
  </variable>
  <variable name="n-octane_ng_per_m3_amean_qc" shape="n-octane_ng_per_m3_amean_qc_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="n-octane_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-octane_pmol_per_mol_amean_qc n-octane_pmol_per_mol_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="n-octane_pmol_per_mol_amean_qc" shape="n-octane_pmol_per_mol_amean_qc_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="n-octane_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-octane_ng_per_m3_ExpUnc2s_qc n-octane_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 5.10." />
  </variable>
  <variable name="n-octane_ng_per_m3_ExpUnc2s_qc" shape="n-octane_ng_per_m3_ExpUnc2s_qc_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="n-octane_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-octane_pmol_per_mol_ExpUnc2s_qc n-octane_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="n-octane_pmol_per_mol_ExpUnc2s_qc" shape="n-octane_pmol_per_mol_ExpUnc2s_qc_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="n-octane_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-octane_ng_per_m3_precision_qc n-octane_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 5.10." />
  </variable>
  <variable name="n-octane_ng_per_m3_precision_qc" shape="n-octane_ng_per_m3_precision_qc_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="n-octane_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-octane_pmol_per_mol_precision_qc n-octane_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="n-octane_pmol_per_mol_precision_qc" shape="n-octane_pmol_per_mol_precision_qc_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="n-octane_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-pentane_ng_per_m3_amean_qc n-pentane_ng_per_m3_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.219." />
  </variable>
  <variable name="n-pentane_ng_per_m3_amean_qc" shape="n-pentane_ng_per_m3_amean_qc_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="n-pentane_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-pentane_pmol_per_mol_amean_qc n-pentane_pmol_per_mol_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="n-pentane_pmol_per_mol_amean_qc" shape="n-pentane_pmol_per_mol_amean_qc_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="n-pentane_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-pentane_ng_per_m3_ExpUnc2s_qc n-pentane_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.219." />
  </variable>
  <variable name="n-pentane_ng_per_m3_ExpUnc2s_qc" shape="n-pentane_ng_per_m3_ExpUnc2s_qc_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="n-pentane_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-pentane_pmol_per_mol_ExpUnc2s_qc n-pentane_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="n-pentane_pmol_per_mol_ExpUnc2s_qc" shape="n-pentane_pmol_per_mol_ExpUnc2s_qc_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="n-pentane_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-pentane_ng_per_m3_precision_qc n-pentane_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.219." />
  </variable>
  <variable name="n-pentane_ng_per_m3_precision_qc" shape="n-pentane_ng_per_m3_precision_qc_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="n-pentane_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="n-pentane_pmol_per_mol_precision_qc n-pentane_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="n-pentane_pmol_per_mol_precision_qc" shape="n-pentane_pmol_per_mol_precision_qc_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="n-pentane_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="o-xylene_ng_per_m3_amean_qc o-xylene_ng_per_m3_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.737." />
  </variable>
  <variable name="o-xylene_ng_per_m3_amean_qc" shape="o-xylene_ng_per_m3_amean_qc_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="o-xylene_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="o-xylene_pmol_per_mol_amean_qc o-xylene_pmol_per_mol_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="o-xylene_pmol_per_mol_amean_qc" shape="o-xylene_pmol_per_mol_amean_qc_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="o-xylene_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="o-xylene_ng_per_m3_ExpUnc2s_qc o-xylene_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.737." />
  </variable>
  <variable name="o-xylene_ng_per_m3_ExpUnc2s_qc" shape="o-xylene_ng_per_m3_ExpUnc2s_qc_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="o-xylene_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="o-xylene_pmol_per_mol_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="pmol/mol" />
    <attribute name="ancillary_variables" value="o-xylene_pmol_per_mol_ExpUnc2s_qc o-xylene_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="o-xylene_pmol_per_mol_ExpUnc2s_qc" shape="o-xylene_pmol_per_mol_ExpUnc2s_qc_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="o-xylene_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="o-xylene_ng_per_m3_precision" 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="o-xylene_ng_per_m3_precision_qc o-xylene_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.737." />
  </variable>
  <variable name="o-xylene_ng_per_m3_precision_qc" shape="o-xylene_ng_per_m3_precision_qc_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="o-xylene_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="o-xylene_pmol_per_mol_precision" 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="o-xylene_pmol_per_mol_precision_qc o-xylene_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="o-xylene_pmol_per_mol_precision_qc" shape="o-xylene_pmol_per_mol_precision_qc_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="o-xylene_pmol_per_mol_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="propane_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="propane_amean_qc propane_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="propane_amean_qc" shape="propane_amean_qc_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="propane_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="propane_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="propane_ExpUnc2s_qc propane_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="propane_ExpUnc2s_qc" shape="propane_ExpUnc2s_qc_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="propane_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="propane_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="propane_precision_qc propane_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="propane_precision_qc" shape="propane_precision_qc_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="propane_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="toluene_ng_per_m3_amean_qc toluene_ng_per_m3_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.111." />
  </variable>
  <variable name="toluene_ng_per_m3_amean_qc" shape="toluene_ng_per_m3_amean_qc_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="toluene_ng_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="toluene_pmol_per_mol_amean_qc toluene_pmol_per_mol_amean_ebasmetadata" />
    <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="20170404083804" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="toluene_pmol_per_mol_amean_qc" shape="toluene_pmol_per_mol_amean_qc_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="toluene_pmol_per_mol_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="toluene_ng_per_m3_ExpUnc2s_qc toluene_ng_per_m3_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.111." />
  </variable>
  <variable name="toluene_ng_per_m3_ExpUnc2s_qc" shape="toluene_ng_per_m3_ExpUnc2s_qc_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="toluene_ng_per_m3_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="toluene_pmol_per_mol_ExpUnc2s_qc toluene_pmol_per_mol_ExpUnc2s_ebasmetadata" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="toluene_pmol_per_mol_ExpUnc2s_qc" shape="toluene_pmol_per_mol_ExpUnc2s_qc_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="toluene_pmol_per_mol_ExpUnc2s_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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" />
    <attribute name="ancillary_variables" value="toluene_ng_per_m3_precision_qc toluene_ng_per_m3_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 4.111." />
  </variable>
  <variable name="toluene_ng_per_m3_precision_qc" shape="toluene_ng_per_m3_precision_qc_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="toluene_ng_per_m3_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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" />
    <attribute name="ancillary_variables" value="toluene_pmol_per_mol_precision_qc toluene_pmol_per_mol_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170404083804" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="40mn" />
    <attribute name="ebas_orig_time_res" value="40mn" />
    <attribute name="ebas_station_code" value="IT0009R" />
    <attribute name="ebas_platform_code" value="IT0009S" />
    <attribute name="ebas_station_name" value="Mt Cimone" />
    <attribute name="ebas_station_latitude" value="44.183333" />
    <attribute name="ebas_station_longitude" value="10.7" />
    <attribute name="ebas_station_altitude" value="2165.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="IT10L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="GC-MS_6890-5975c_UNITY2-AIRSERVER2" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server+UNITY2+6890+5975C" />
    <attribute name="ebas_instrument_serial_number" value="CIMxxxxx" />
    <attribute name="ebas_method_ref" value="IT10L_GPROSIM12_SETUPX1200" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <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="Determined by data processing for each component evaluating the the S/N=3 on the blank chromatograms" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (1/3 of DL + precision of the daily std measurements) + systematic errors (scale transfer), reported as expanded uncertainty 2sigma" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <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="IT10L, University of Urbino, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCGG-node" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, GAW-WDCGG-node" />
    <attribute name="ebas_framework_description" value="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., 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, Ann Mari Fjæraa" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, " />
    <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, GAW-WDCGG-node. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="preconcentration on the Unity U-T5O3F-2S cold trap, O3 not removed directly, Nafion dryer is used, 2-hourly calibration interval, working std calibrated  almost weekly against station std, regularly calibrated against NPL primary std at 0.5ppb" />
  </variable>
  <variable name="toluene_pmol_per_mol_precision_qc" shape="toluene_pmol_per_mol_precision_qc_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="toluene_pmol_per_mol_precision_ebasmetadata" 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 1900-01-01 00:00:00 UTC" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="gregorian" />
    <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 1900-01-01 00:00:00 UTC" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="gregorian" />
    <attribute name="bounds" value="metadata_time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
</netcdf>
