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  <attribute name="Conventions" value="CF-1.8, ACDD-1.3" />
  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Ozone at Nyirjes" />
  <attribute name="keywords" value="air, EMEP, mole_fraction_of_ozone_in_air, mass_concentration_of_ozone_in_air, HU0017R, ozone, Nyirjes" />
  <attribute name="id" value="HU0017R.20220101000000.20260319100910.uv_abs.ozone.air.3y.1h.HU01L_OZ17.HU01L_uv_abs.lev2.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="EMEP" />
  <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 framework: EMEP." />
  <attribute name="doi" value="https://doi.org/10.48597/V8U2-JY3M" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Puskas, M., Gyarmatine Meszaros, E., EMEP, 2026, Ozone at Nyirjes, data hosted by EBAS at NILU, Part of DOI: https://doi.org/10.48597/V8U2-JY3M" />
  <attribute name="summary" value="Ozone at Nyirjes. These measurements are gathered as a part of the following projects EMEP and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ozone in air (mole_fraction_of_ozone_in_air), ozone in air (mass_concentration_of_ozone_in_air)" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="HU01L, Hungarian Meteorological Service, OMSZ, Unit of Analysis on Ambient Air, P.O.Box 39, 1675, Budapest, Hungary" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2026-03-19T10:09:10 UTC" />
  <attribute name="date_metadata_modified" value="2026-03-19T10:09:10 UTC" />
  <attribute name="creator_name" value="Monika Puskas, Erzsebet Gyarmatine Meszaros" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="puskas.monika@met.hu, " />
  <attribute name="creator_institution" value="&quot;Hungarian Meteorological Service, Unit Air Quality Reference Centre, OMSZ&quot;, " />
  <attribute name="contributor_name" value="Monika Puskas, Erzsebet Gyarmatine Meszaros" />
  <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 (47.89972 19.94667 673.0)" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="geospatial_lat_min" type="double" value="47.89972" />
  <attribute name="geospatial_lat_max" type="double" value="47.89972" />
  <attribute name="geospatial_lon_min" type="double" value="19.94667" />
  <attribute name="geospatial_lon_max" type="double" value="19.94667" />
  <attribute name="geospatial_vertical_min" type="double" value="673.0" />
  <attribute name="geospatial_vertical_max" type="double" value="673.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="time_coverage_start" value="2022-01-01T00:00:00 UTC" />
  <attribute name="time_coverage_end" value="2025-01-01T00:00:00 UTC" />
  <attribute name="time_coverage_duration" value="P0003-00-00T00:00:00" />
  <attribute name="time_coverage_resolution" value="P0000-00-00T01:00:00" />
  <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="Puskas, M., Gyarmatine Meszaros, E., EMEP, 2026, Ozone at Nyirjes, data hosted by EBAS at NILU, Part of DOI: https://doi.org/10.48597/V8U2-JY3M" />
  <attribute name="ebas_set_type_code" value="TU" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="HU0017R.20220101000000.20260319100910.uv_abs.ozone.air.3y.1h.HU01L_OZ17.HU01L_uv_abs.lev2.nc" />
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  <attribute name="ebas_file_creation" value="2026-03-19T14:34:48.771525 UTC" />
  <attribute name="ebas_export_state" value="2026-03-19T14:25:02.714097 UTC" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="20220101000000" />
  <attribute name="ebas_revision_date" value="20260319100910" />
  <attribute name="ebas_version" value="1" />
  <attribute name="ebas_version_description" value="initial revision, manually inspected" />
  <attribute name="ebas_statistics" value="arithmetic mean" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="3y" />
  <attribute name="ebas_resolution_code" value="1h" />
  <attribute name="ebas_sample_duration" value="1h" />
  <attribute name="ebas_orig_time_res" value="1mn" />
  <attribute name="ebas_station_code" value="HU0017R" />
  <attribute name="ebas_platform_code" value="HU0017S" />
  <attribute name="ebas_station_name" value="Nyirjes" />
  <attribute name="ebas_station_gaw_name" value="Nyirjes" />
  <attribute name="ebas_station_land_use" value="Forest" />
  <attribute name="ebas_station_setting" value="Rural" />
  <attribute name="ebas_station_gaw_type" value="R" />
  <attribute name="ebas_station_wmo_region" value="6" />
  <attribute name="ebas_station_latitude" value="47.89972" />
  <attribute name="ebas_station_longitude" value="19.94667" />
  <attribute name="ebas_station_altitude" value="670.0 m" />
  <attribute name="ebas_measurement_altitude" value="673.0 m" />
  <attribute name="ebas_measurement_height" value="3.0 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_component" value="ozone" />
  <attribute name="ebas_matrix" value="air" />
  <attribute name="ebas_laboratory_code" value="HU01L" />
  <attribute name="ebas_instrument_type" value="uv_abs" />
  <attribute name="ebas_instrument_name" value="OZ17" />
  <attribute name="ebas_instrument_manufacturer" value="Horiba" />
  <attribute name="ebas_instrument_model" value="APOA-370" />
  <attribute name="ebas_instrument_serial_number" value="W0RXA12K" />
  <attribute name="ebas_method_ref" value="HU01L_uv_abs" />
  <attribute name="ebas_standard_method" value="SOP=GAW_209(2013)" />
  <attribute name="ebas_inlet_type" value="Hat or hood" />
  <attribute name="ebas_inlet_tube_material" value="Teflon" />
  <attribute name="ebas_inlet_tube_outer_diameter" value="6.35 mm" />
  <attribute name="ebas_inlet_tube_inner_diameter" value="3.95 mm" />
  <attribute name="ebas_inlet_tube_length" value="4.5 m" />
  <attribute name="ebas_maintenance_description" value="Inlet filter and ozone scrubber checked and replaced if needed" />
  <attribute name="ebas_flow_rate" value="0.6 l/min" />
  <attribute name="ebas_zero_span_check_type" value="manual" />
  <attribute name="ebas_zero_span_check_interval" value="2w" />
  <attribute name="ebas_humidity_temperaure_control" value="None" />
  <attribute name="ebas_absorption_cross_section" value="CCQM.O3.2019" />
  <attribute name="ebas_organization" value="HU01L, Hungarian Meteorological Service, OMSZ, Unit of Analysis on Ambient Air, P.O.Box 39, , 1675, Budapest, Hungary" />
  <attribute name="ebas_framework_acronym" value="EMEP" />
  <attribute name="ebas_framework_name" value="European Monitoring and Evaluation Programme" />
  <attribute name="ebas_framework_description" value="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="Kjetil Tørseth" />
  <attribute name="ebas_framework_contact_email" value="kt@nilu.no" />
  <attribute name="ebas_originator" value="Gyarmatine Meszaros, Erzsebet, , , , , , , , , " />
  <attribute name="ebas_submitter" value="Gyarmatine Meszaros, Erzsebet, , , , , , , , , " />
  <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: EMEP." />
  <attribute name="_NCProperties" value="version=2,netcdf=4.9.1,hdf5=1.12.2" />
  <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;Puskas, M., Gyarmatine Meszaros, E., EMEP, 2026, Ozone at Nyirjes, data hosted by EBAS at NILU, Part of DOI: https://doi.org/10.48597/V8U2-JY3M&quot;,&#xA;    &quot;Set type code&quot;: &quot;TU&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;HU0017R.20220101000000.20260319100910.uv_abs.ozone.air.3y.1h.HU01L_OZ17.HU01L_uv_abs.lev2.nc&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/V8U2-JY3M&quot;,&#xA;    &quot;File creation&quot;: &quot;2026-03-19T14:34:48.771525 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2026-03-19T14:25:02.714097 UTC&quot;,&#xA;    &quot;Export filter&quot;: &quot;exclude-900,exclude-invalid&quot;,&#xA;    &quot;Startdate&quot;: &quot;20220101000000&quot;,&#xA;    &quot;Revision date&quot;: &quot;20260319100910&quot;,&#xA;    &quot;Version&quot;: &quot;1&quot;,&#xA;    &quot;Version description&quot;: &quot;initial revision, manually inspected&quot;,&#xA;    &quot;Statistics&quot;: &quot;arithmetic mean&quot;,&#xA;    &quot;Data level&quot;: &quot;2&quot;,&#xA;    &quot;Period code&quot;: &quot;3y&quot;,&#xA;    &quot;Resolution code&quot;: &quot;1h&quot;,&#xA;    &quot;Sample duration&quot;: &quot;1h&quot;,&#xA;    &quot;Orig. time res.&quot;: &quot;1mn&quot;,&#xA;    &quot;Station code&quot;: &quot;HU0017R&quot;,&#xA;    &quot;Platform code&quot;: &quot;HU0017S&quot;,&#xA;    &quot;Station name&quot;: &quot;Nyirjes&quot;,&#xA;    &quot;Station GAW-Name&quot;: &quot;Nyirjes&quot;,&#xA;    &quot;Station land use&quot;: &quot;Forest&quot;,&#xA;    &quot;Station setting&quot;: &quot;Rural&quot;,&#xA;    &quot;Station GAW type&quot;: &quot;R&quot;,&#xA;    &quot;Station WMO region&quot;: &quot;6&quot;,&#xA;    &quot;Station latitude&quot;: &quot;47.89972&quot;,&#xA;    &quot;Station longitude&quot;: &quot;19.94667&quot;,&#xA;    &quot;Station altitude&quot;: &quot;670.0 m&quot;,&#xA;    &quot;Measurement altitude&quot;: &quot;673.0 m&quot;,&#xA;    &quot;Measurement height&quot;: &quot;3.0 m&quot;,&#xA;    &quot;Regime&quot;: &quot;IMG&quot;,&#xA;    &quot;Component&quot;: &quot;ozone&quot;,&#xA;    &quot;Matrix&quot;: &quot;air&quot;,&#xA;    &quot;Laboratory code&quot;: &quot;HU01L&quot;,&#xA;    &quot;Instrument type&quot;: &quot;uv_abs&quot;,&#xA;    &quot;Instrument name&quot;: &quot;OZ17&quot;,&#xA;    &quot;Instrument manufacturer&quot;: &quot;Horiba&quot;,&#xA;    &quot;Instrument model&quot;: &quot;APOA-370&quot;,&#xA;    &quot;Instrument serial number&quot;: &quot;W0RXA12K&quot;,&#xA;    &quot;Method ref&quot;: &quot;HU01L_uv_abs&quot;,&#xA;    &quot;Standard method&quot;: &quot;SOP=GAW_209(2013)&quot;,&#xA;    &quot;Inlet type&quot;: &quot;Hat or hood&quot;,&#xA;    &quot;Inlet tube material&quot;: &quot;Teflon&quot;,&#xA;    &quot;Inlet tube outer diameter&quot;: &quot;6.35 mm&quot;,&#xA;    &quot;Inlet tube inner diameter&quot;: &quot;3.95 mm&quot;,&#xA;    &quot;Inlet tube length&quot;: &quot;4.5 m&quot;,&#xA;    &quot;Maintenance description&quot;: &quot;Inlet filter and ozone scrubber checked and replaced if needed&quot;,&#xA;    &quot;Flow rate&quot;: &quot;0.6 l/min&quot;,&#xA;    &quot;Zero/span check type&quot;: &quot;manual&quot;,&#xA;    &quot;Zero/span check interval&quot;: &quot;2w&quot;,&#xA;    &quot;Humidity/temperature control&quot;: &quot;None&quot;,&#xA;    &quot;Absorption cross section&quot;: &quot;CCQM.O3.2019&quot;,&#xA;    &quot;Organization&quot;: &quot;HU01L, Hungarian Meteorological Service, OMSZ, Unit of Analysis on Ambient Air, P.O.Box 39, , 1675, Budapest, Hungary&quot;,&#xA;    &quot;Framework acronym&quot;: &quot;EMEP&quot;,&#xA;    &quot;Framework name&quot;: &quot;European Monitoring and Evaluation Programme&quot;,&#xA;    &quot;Framework description&quot;: &quot;The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems.&quot;,&#xA;    &quot;Framework contact name&quot;: &quot;Kjetil Tørseth&quot;,&#xA;    &quot;Framework contact email&quot;: &quot;kt@nilu.no&quot;,&#xA;    &quot;Originator&quot;: &quot;Gyarmatine Meszaros, Erzsebet, , , , , , , , , &quot;,&#xA;    &quot;Submitter&quot;: &quot;Gyarmatine Meszaros, Erzsebet, , , , , , , , , &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 framework: EMEP.&quot;&#xA;}" />
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  <attribute name="history" value="None" />
  <attribute name="creator_url" value="ebas.nilu.no" />
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  <dimension name="time" length="26304" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="3" />
  <dimension name="ozone_nmol_per_mol_qc_flags" length="1" />
  <dimension name="ozone_ug_per_m3_qc_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2022-01-01T00:30:00Z" />
    <attribute name="time_coverage_end" value="2024-12-31T23:30:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="3600.0" />
    <attribute name="time_coverage_duration" value="P0Y0M1095DT23H0M0.000S" />
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    <attribute name="metadata_creation" value="2026-04-07" />
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    <attribute name="long_name" value="time bounds for measurement" />
  </variable>
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    <attribute name="long_name" value="time bounds for ebas metadata intervals" />
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    <attribute name="standard_name" value="mole_fraction_of_ozone_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="ozone_nmol_per_mol_qc ozone_nmol_per_mol_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="20260319100910" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_orig_time_res" value="1mn" />
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    <attribute name="ebas_station_setting" value="Rural" />
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    <attribute name="ebas_station_wmo_region" value="6" />
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    <attribute name="ebas_station_longitude" value="19.94667" />
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    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_tube_material" value="Teflon" />
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    <attribute name="ebas_zero_span_check_interval" value="2w" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_detection_limit" value="0.5 nmol/mol" />
    <attribute name="ebas_absorption_cross_section" value="CCQM.O3.2019" />
    <attribute name="ebas_organization" value="HU01L, Hungarian Meteorological Service, OMSZ, Unit of Analysis on Ambient Air, P.O.Box 39, , 1675, Budapest, Hungary" />
    <attribute name="ebas_framework_acronym" value="EMEP" />
    <attribute name="ebas_framework_name" value="European Monitoring and Evaluation Programme" />
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    <attribute name="ebas_submitter" value="Gyarmatine Meszaros, Erzsebet, , , , , , , , , " />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: EMEP." />
    <attribute name="ebas_comment" value="Data converted on export from EBAS from 'ug/m3' at 293.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.501. Detection limit converted from '1.0 ug/m3' at 293.15 K, 1013.25 hPa to '0.5 nmol/mol', conversion factor 0.501." />
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    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="ozone_ug_per_m3_qc ozone_ug_per_m3_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
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    <attribute name="ebas_component" value="ozone" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="HU01L" />
    <attribute name="ebas_instrument_type" value="uv_abs" />
    <attribute name="ebas_instrument_name" value="OZ17" />
    <attribute name="ebas_instrument_manufacturer" value="Horiba" />
    <attribute name="ebas_instrument_model" value="APOA-370" />
    <attribute name="ebas_instrument_serial_number" value="W0RXA12K" />
    <attribute name="ebas_method_ref" value="HU01L_uv_abs" />
    <attribute name="ebas_standard_method" value="SOP=GAW_209(2013)" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_tube_material" value="Teflon" />
    <attribute name="ebas_inlet_tube_outer_diameter" value="6.35 mm" />
    <attribute name="ebas_inlet_tube_inner_diameter" value="3.95 mm" />
    <attribute name="ebas_inlet_tube_length" value="4.5 m" />
    <attribute name="ebas_maintenance_description" value="Inlet filter and ozone scrubber checked and replaced if needed" />
    <attribute name="ebas_flow_rate" value="0.6 l/min" />
    <attribute name="ebas_zero_span_check_type" value="manual" />
    <attribute name="ebas_zero_span_check_interval" value="2w" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_volume_std_temperature" value="293.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="1.0 ug/m3" />
    <attribute name="ebas_absorption_cross_section" value="CCQM.O3.2019" />
    <attribute name="ebas_organization" value="HU01L, Hungarian Meteorological Service, OMSZ, Unit of Analysis on Ambient Air, P.O.Box 39, , 1675, Budapest, Hungary" />
    <attribute name="ebas_framework_acronym" value="EMEP" />
    <attribute name="ebas_framework_name" value="European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value="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="Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="kt@nilu.no" />
    <attribute name="ebas_originator" value="Gyarmatine Meszaros, Erzsebet, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Gyarmatine Meszaros, Erzsebet, , , , , , , , , " />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: EMEP." />
  </variable>
  <variable name="ozone_ug_per_m3_qc" shape="ozone_ug_per_m3_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="ozone_ug_per_m3_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>
