{
  "@context" : {
    "@base" : "http://dd.eionet.europa.eu/vocabulary/uom/concentration/",
    "skos" : "http://www.w3.org/2004/02/skos/core#",
    "concepts" : "skos:Concept",
    "prefLabel" : "skos:prefLabel",
    "broader" : "skos:broader",
    "narrower" : "skos:narrower",
    "@language" : "en",
    "VocabularyId" : "553",
    "ContinuityId" : "68471254-9026-3a1a-9ec5-31de7f4b3ab1",
    "Identifier" : "concentration",
    "Label" : "Concentration units",
    "RegistrationStatus" : "Public draft",
    "IsWorkingCopy" : "false",
    "CheckedOutCopyId" : "0",
    "WorkingUser" : null,
    "DateModified" : "2025-09-29 16:00:44.0",
    "UserModified" : "colinmar",
    "IsNumericConceptIdentifiers" : "false",
    "VocabularyType" : "Common",
    "FolderId" : "13",
    "FolderName" : "uom",
    "FolderLabel" : "Units of Measurement",
    "IsNotationsEqualIdentifiers" : "false",
    "Definition" : null,
    "Version" : null
  },
  "concepts" : [ {
    "@id" : "mg.l-1",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Milligrams per litre",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530445",
    "VocabularyId" : "553",
    "Identifier" : "mg.l-1",
    "Label" : "Milligrams per litre",
    "Definition" : "Milligrams per litre",
    "Notation" : "mg/l",
    "Status" : "Valid",
    "StatusModifiedDate" : "2025-09-29",
    "AcceptedDate" : "2025-09-29",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "mg.m-3",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Miligrams per cubic metre of ambient air",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530446",
    "VocabularyId" : "553",
    "Identifier" : "mg.m-3",
    "Label" : "Miligrams per cubic metre of ambient air",
    "Definition" : "Miligrams per cubic metre of ambient air. Unit of amount of chemical vapors, fumes, or dust in the ambient air.",
    "Notation" : "mg/m3",
    "Status" : "Valid",
    "StatusModifiedDate" : "2013-08-01",
    "AcceptedDate" : "2013-08-01",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "mg.m-3.day",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Micrograms per cubic meter times day",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530447",
    "VocabularyId" : "553",
    "Identifier" : "mg.m-3.day",
    "Label" : "Micrograms per cubic meter times day",
    "Definition" : "Micrograms per cubic meter times day",
    "Notation" : "mg/m-3.day",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "mg.m-3.h",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Micrograms per cubic meter times hour",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530448",
    "VocabularyId" : "553",
    "Identifier" : "mg.m-3.h",
    "Label" : "Micrograms per cubic meter times hour",
    "Definition" : "Micrograms per cubic meter times hour",
    "Notation" : "mg/m3.h",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "mgN.l-1",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Milligrams nitrogen per litre",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530449",
    "VocabularyId" : "553",
    "Identifier" : "mgN.l-1",
    "Label" : "Milligrams nitrogen per litre",
    "Definition" : "Milligrams nitrogen per litre",
    "Notation" : "mg N/l",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "mgN.m-2.m-1",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Milligrams nitrogen per square meter per month",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530450",
    "VocabularyId" : "553",
    "Identifier" : "mgN.m-2.m-1",
    "Label" : "Milligrams nitrogen per square meter per month",
    "Definition" : "Milligrams nitrogen per square meter per month",
    "Notation" : "mg N/m2/m",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "mgS.l-1",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Milligrams sulphur per litre",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530451",
    "VocabularyId" : "553",
    "Identifier" : "mgS.l-1",
    "Label" : "Milligrams sulphur per litre",
    "Definition" : "Milligrams sulphur per litre",
    "Notation" : "mg S/l",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "mgS.m-1",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Milligrams nitrogen per meter",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530452",
    "VocabularyId" : "553",
    "Identifier" : "mgS.m-1",
    "Label" : "Milligrams nitrogen per meter",
    "Definition" : null,
    "Notation" : "mgS.m-1",
    "Status" : "Valid",
    "StatusModifiedDate" : "2018-09-26",
    "AcceptedDate" : null,
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "mgS.m-2.m-1",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Milligrams sulphur per square meter per month",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530453",
    "VocabularyId" : "553",
    "Identifier" : "mgS.m-2.m-1",
    "Label" : "Milligrams sulphur per square meter per month",
    "Definition" : "Milligrams sulphur per square meter per month",
    "Notation" : "mg S/m2.m",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "mm",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Millimeter",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530454",
    "VocabularyId" : "553",
    "Identifier" : "mm",
    "Label" : "Millimeter",
    "Definition" : "Millimeter",
    "Notation" : "mm",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "ng.l-1",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Nanograms per litre",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530455",
    "VocabularyId" : "553",
    "Identifier" : "ng.l-1",
    "Label" : "Nanograms per litre",
    "Definition" : "Nanograms per litre",
    "Notation" : "ng/l",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "ng.m-2",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Nanograms per square meter",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530456",
    "VocabularyId" : "553",
    "Identifier" : "ng.m-2",
    "Label" : "Nanograms per square meter",
    "Definition" : "Nanograms per square meter",
    "Notation" : "ng/m2",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "ng.m-2.day-1",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Nanograms per square metre per day",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530457",
    "VocabularyId" : "553",
    "Identifier" : "ng.m-2.day-1",
    "Label" : "Nanograms per square metre per day",
    "Definition" : "Unit of amount of chemical vapors, fumes, or dust deposited from the air.",
    "Notation" : "ng/m2/day",
    "Status" : "Valid",
    "StatusModifiedDate" : "2013-08-01",
    "AcceptedDate" : "2013-08-01",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "ng.m-3",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Nanograms per cubic metre of ambient air",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530458",
    "VocabularyId" : "553",
    "Identifier" : "ng.m-3",
    "Label" : "Nanograms per cubic metre of ambient air",
    "Definition" : "Nanograms per cubic metre of ambient air. Unit of amount of chemical vapors, fumes, or dust in the ambient air",
    "Notation" : "ng/m3",
    "Status" : "Valid",
    "StatusModifiedDate" : "2013-08-01",
    "AcceptedDate" : "2013-08-01",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "nm",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Nanometer",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530459",
    "VocabularyId" : "553",
    "Identifier" : "nm",
    "Label" : "Nanometer",
    "Definition" : "Nanometer",
    "Notation" : "nm",
    "Status" : "Valid",
    "StatusModifiedDate" : "2022-03-25",
    "AcceptedDate" : "2022-03-25",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "pHunits",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "pH",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530460",
    "VocabularyId" : "553",
    "Identifier" : "pHunits",
    "Label" : "pH",
    "Definition" : "pH",
    "Notation" : "pH units",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "particles.cm-3",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "particles.cm-3",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530461",
    "VocabularyId" : "553",
    "Identifier" : "particles.cm-3",
    "Label" : "particles.cm-3",
    "Definition" : "Number of particles per cm3",
    "Notation" : "particles.cm-3",
    "Status" : "Valid",
    "StatusModifiedDate" : "2021-06-15",
    "AcceptedDate" : null,
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "pg.m-2.day-1",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Picograms per square metre per day",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530462",
    "VocabularyId" : "553",
    "Identifier" : "pg.m-2.day-1",
    "Label" : "Picograms per square metre per day",
    "Definition" : "Unit of amount of chemical vapors, fumes, or dust deposited from the air.",
    "Notation" : "pg/m2/day",
    "Status" : "Valid",
    "StatusModifiedDate" : "2019-09-19",
    "AcceptedDate" : null,
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "pg.m-3",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Picograms per cubic metre of ambient air",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530463",
    "VocabularyId" : "553",
    "Identifier" : "pg.m-3",
    "Label" : "Picograms per cubic metre of ambient air",
    "Definition" : "Picograms per cubic metre of ambient air. Unif of amount of chemical vapors, fumes, or dust in the ambient air.",
    "Notation" : "pg/m3",
    "Status" : "Valid",
    "StatusModifiedDate" : "2013-08-01",
    "AcceptedDate" : "2013-08-01",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "ppbv",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Parts per billion per volume",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530464",
    "VocabularyId" : "553",
    "Identifier" : "ppbv",
    "Label" : "Parts per billion per volume",
    "Definition" : "Parts per billion per volume",
    "Notation" : "ppbv",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "ppmv",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Parts per million by volume",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530465",
    "VocabularyId" : "553",
    "Identifier" : "ppmv",
    "Label" : "Parts per million by volume",
    "Definition" : "Parts per million by volume",
    "Notation" : "ppmv",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "pptv",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Parts per trillion per volume",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530466",
    "VocabularyId" : "553",
    "Identifier" : "pptv",
    "Label" : "Parts per trillion per volume",
    "Definition" : "Parts per trillion per volume",
    "Notation" : "pptv",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "uS.cm-1",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Micro Siemens per centimeter",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530467",
    "VocabularyId" : "553",
    "Identifier" : "uS.cm-1",
    "Label" : "Micro Siemens per centimeter",
    "Definition" : "Micro Siemens per centimeter",
    "Notation" : "uS/cm",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "ueH.l-1",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "micromoles per litre",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530468",
    "VocabularyId" : "553",
    "Identifier" : "ueH.l-1",
    "Label" : "micromoles per litre",
    "Definition" : "micromoles per litre",
    "Notation" : "ue H/l",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "ug.l-1",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Micrograms per litre",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530469",
    "VocabularyId" : "553",
    "Identifier" : "ug.l-1",
    "Label" : "Micrograms per litre",
    "Definition" : "Micrograms per litre",
    "Notation" : "µg/l",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "ug.m-2.day-1",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Micrograms per square metre per day",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530470",
    "VocabularyId" : "553",
    "Identifier" : "ug.m-2.day-1",
    "Label" : "Micrograms per square metre per day",
    "Definition" : "Unit of amount of chemical vapors, fumes, or dust deposited from the air.",
    "Notation" : "ug/m2/day",
    "Status" : "Valid",
    "StatusModifiedDate" : "2013-08-01",
    "AcceptedDate" : "2013-08-01",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "ug.m-3",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Micrograms per cubic meter",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530471",
    "VocabularyId" : "553",
    "Identifier" : "ug.m-3",
    "Label" : "Micrograms per cubic meter",
    "Definition" : "Micrograms per cubic meter",
    "Notation" : "µg/m3",
    "Status" : "Valid",
    "StatusModifiedDate" : "2013-08-01",
    "AcceptedDate" : "2013-08-01",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "ug.m-3.day",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Micrograms per cubic metre per day",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530472",
    "VocabularyId" : "553",
    "Identifier" : "ug.m-3.day",
    "Label" : "Micrograms per cubic metre per day",
    "Definition" : "Micrograms per cubic metre per hour. Unit for Ozone SOMO35",
    "Notation" : "ug/m3·day",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-06-03",
    "AcceptedDate" : "2014-06-03",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "ug.m-3.h",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Micrograms per cubic metre per hour",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530473",
    "VocabularyId" : "553",
    "Identifier" : "ug.m-3.h",
    "Label" : "Micrograms per cubic metre per hour",
    "Definition" : "Micrograms per cubic metre per hour. Unit for the calculation of the accumulated amount of ozone over the threshold value of 40 ppb (AOT40)",
    "Notation" : "ug/m3·h",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-05-19",
    "AcceptedDate" : "2014-05-19",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "ugC.m-3",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Micrograms of carbon per cubic metre",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530474",
    "VocabularyId" : "553",
    "Identifier" : "ugC.m-3",
    "Label" : "Micrograms of carbon per cubic metre",
    "Definition" : "Micrograms of carbon per cubic metre",
    "Notation" : "µg C/m3",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "ugN.m-3",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Micrograms of nitrogen per cubic metre",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530475",
    "VocabularyId" : "553",
    "Identifier" : "ugN.m-3",
    "Label" : "Micrograms of nitrogen per cubic metre",
    "Definition" : "Micrograms of nitrogen per cubic metre",
    "Notation" : "µg N/m3",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "ugNO2.m-3",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Units of mass concentration of nitrogen dioxide (μg/m3)",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530476",
    "VocabularyId" : "553",
    "Identifier" : "ugNO2.m-3",
    "Label" : "Units of mass concentration of nitrogen dioxide (μg/m3)",
    "Definition" : "‘Oxides of nitrogen’ shall mean the sum of the volume mixing ratio (ppbv) of nitrogen monoxide (nitric oxide) and\r\nnitrogen dioxide expressed in units of mass concentration of nitrogen dioxide (μg/m3).",
    "Notation" : "ugNO2/m3",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-09-08",
    "AcceptedDate" : "2014-09-08",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ "http://dd.eionet.europa.eu/vocabulary/aq/pollutant/9" ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "ugS.m-3",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Micrograms of sulphur per cubic metre",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530477",
    "VocabularyId" : "553",
    "Identifier" : "ugS.m-3",
    "Label" : "Micrograms of sulphur per cubic metre",
    "Definition" : "Micrograms of sulphur per cubic metre",
    "Notation" : "µg S/m3",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "ugSO2.m-3",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Micrograms of sulphur dioxide per cubic metre",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530478",
    "VocabularyId" : "553",
    "Identifier" : "ugSO2.m-3",
    "Label" : "Micrograms of sulphur dioxide per cubic metre",
    "Definition" : "Micrograms of sulphur dioxide per cubic metre",
    "Notation" : "µg SO2/m3",
    "Status" : "Valid",
    "StatusModifiedDate" : "2014-11-06",
    "AcceptedDate" : "2014-11-06",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  }, {
    "@id" : "fg.m-3",
    "@type" : "skos:Concept",
    "prefLabel" : [ {
      "@value" : "Femtograms per cubic meter",
      "@language" : "en"
    } ],
    "VocabularyConceptId" : "54530508",
    "VocabularyId" : "553",
    "Identifier" : "fg.m-3",
    "Label" : "Femtograms per cubic meter",
    "Definition" : "Femtograms per cubic meter",
    "Notation" : "fg/m3",
    "Status" : "Valid",
    "StatusModifiedDate" : "2025-09-29",
    "AcceptedDate" : "2025-09-29",
    "NotAcceptedDate" : null,
    "broader" : [ ],
    "narrower" : [ ],
    "GWPercentile10" : [ ],
    "skos:relatedMatch" : [ ],
    "CodeDF710" : [ ],
    "Class1" : [ ]
  } ]
}