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        <gco:CharacterString>Znečišťující látky s imisními limity stanovenými pro ochranu zdraví s dobou průměrování 1 kalendářní rok zahrnují: NO₂_rp_5l – NO₂, roční průměrná koncentrace [µg·m⁻³]; PM₁₀_rp_5l – PM₁₀, roční průměrná koncentrace [µg·m⁻³]; PM₂₅_rp_5l – PM₂,₅, roční průměrná koncentrace [µg·m⁻³]; BZN_rp_5l – benzen, roční průměrná koncentrace [µg·m⁻³]; BaP_rp_5l – benzo[a]pyren, roční průměrná koncentrace [ng·m⁻³]; As_rp_5l – arsen, roční průměrná koncentrace [ng·m⁻³]; Pb_rp_5l – olovo, roční průměrná koncentrace [ng·m⁻³]; Ni_rp_5l – nikl, roční průměrná koncentrace [ng·m⁻³]; Cd_rp_5l – kadmium, roční průměrná koncentrace [ng·m⁻³].

Znečišťující látky s imisními limity stanovenými pro ochranu zdraví s dobou průměrování 24 hodin zahrnují: PM₁₀h24_5l – PM₁₀, 36. nejvyšší 24hodinová průměrná koncentrace v kalendářním roce [µg·m⁻³]; SO₂h24_5l – SO₂, 4. nejvyšší 24hodinová průměrná koncentrace v kalendářním roce [µg·m⁻³].

Znečišťující látky s imisními limity stanovenými pro ochranu ekosystémů a vegetace zahrnují: SO₂_rp_5l – SO₂, roční průměrná koncentrace [µg·m⁻³]; SO₂_zp_5l – SO₂, průměrná koncentrace za zimní období (1. 10.–31. 3.) [µg·m⁻³]; NOₓ_rp_5l – NOₓ, roční průměrná koncentrace [µg·m⁻³].</gco:CharacterString>
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            <gmd:LocalisedCharacterString locale="#locale-eng">Pollutants with air quality limits set for health protection with an averaging period of 1 calendar year:  
NO₂_rp_5l: NO₂ – annual average concentration [µg·m⁻³], PM₁₀_rp_5l: PM₁₀ – annual average concentration [µg·m⁻³], PM₂₅_rp_5l: PM₂.₅ – annual average concentration [µg·m⁻³], BZN_rp_5l: benzene – annual average concentration [µg·m⁻³], BaP_rp_5l: benzo[a]pyrene – annual average concentration [ng·m⁻³], As_rp_5l: arsenic – annual average concentration [ng·m⁻³], Pb_rp_5l: lead – annual average concentration [ng·m⁻³], Ni_rp_5l: nickel – annual average concentration [ng·m⁻³], Cd_rp_5l: cadmium – annual average concentration [ng·m⁻³].  

Pollutants with air quality limits set for health protection with an averaging period of 24 hours:  
PM₁₀h24_5l: PM₁₀ – 36th highest 24-hour average concentration in a calendar year [µg·m⁻³],  
SO₂h24_5l: SO₂ – 4th highest 24-hour average concentration in a calendar year [µg·m⁻³].  

Pollutants with air quality limits set for the protection of ecosystems and vegetation:  
SO₂_rp_5l: SO₂ – annual average concentration [µg·m⁻³],  
SO₂_zp_5l: SO₂ – average concentration for the winter period (1.10.–31.3.) [µg·m⁻³],  
NOₓ_rp_5l: NOₓ – annual average concentration [µg·m⁻³].</gmd:LocalisedCharacterString>
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            </gmd:PT_FreeText>
          </gmd:keyword>
          <gmd:keyword xsi:type="gmd:PT_FreeText_PropertyType">
            <gco:CharacterString>benzen</gco:CharacterString>
            <gmd:PT_FreeText>
              <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#locale-eng">benzene</gmd:LocalisedCharacterString>
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          <gmd:keyword xsi:type="gmd:PT_FreeText_PropertyType">
            <gco:CharacterString>benzo[a]pyren</gco:CharacterString>
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                <gmd:LocalisedCharacterString locale="#locale-eng">benzo(a)pyrene</gmd:LocalisedCharacterString>
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          <gmd:keyword xsi:type="gmd:PT_FreeText_PropertyType">
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                <gmd:LocalisedCharacterString locale="#locale-eng">arsenic</gmd:LocalisedCharacterString>
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          <gmd:keyword xsi:type="gmd:PT_FreeText_PropertyType">
            <gco:CharacterString>kadmium</gco:CharacterString>
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                <gmd:LocalisedCharacterString locale="#locale-eng">cadmium</gmd:LocalisedCharacterString>
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          <gmd:keyword xsi:type="gmd:PT_FreeText_PropertyType">
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                <gmd:LocalisedCharacterString locale="#locale-eng">nickel</gmd:LocalisedCharacterString>
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          <gmd:keyword xsi:type="gmd:PT_FreeText_PropertyType">
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                <gmd:LocalisedCharacterString locale="#locale-eng">lead</gmd:LocalisedCharacterString>
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          <gmd:keyword xsi:type="gmd:PT_FreeText_PropertyType">
            <gco:CharacterString>oxid siřičitý</gco:CharacterString>
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              <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#locale-eng">sulphur dioxide</gmd:LocalisedCharacterString>
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          </gmd:keyword>
          <gmd:keyword xsi:type="gmd:PT_FreeText_PropertyType">
            <gco:CharacterString>ČHMÚ</gco:CharacterString>
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                <gmd:LocalisedCharacterString locale="#locale-eng">CHMI</gmd:LocalisedCharacterString>
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          </gmd:keyword>
          <gmd:keyword xsi:type="gmd:PT_FreeText_PropertyType">
            <gco:CharacterString>Český hydrometeorologický ústav</gco:CharacterString>
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              <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#locale-eng">Czech Hydrometeorological Institute</gmd:LocalisedCharacterString>
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        <gmd:MD_LegalConstraints>
          <gmd:useConstraints>
            <gmd:MD_RestrictionCode codeListValue="otherRestrictions" codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_RestrictionCode">otherRestrictions</gmd:MD_RestrictionCode>
          </gmd:useConstraints>
          <gmd:otherConstraints xsi:type="gmd:PT_FreeText_PropertyType">
            <gmx:Anchor xlink:href="https://creativecommons.org/licenses/by/4.0/">Creative Commons BY 4.0</gmx:Anchor>
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              <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#locale-eng">Creative Commons BY 4.0</gmd:LocalisedCharacterString>
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          <gmd:otherConstraints xsi:type="gmd:PT_FreeText_PropertyType">
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      <gmd:resourceConstraints>
        <gmd:MD_LegalConstraints>
          <gmd:accessConstraints>
            <gmd:MD_RestrictionCode codeListValue="otherRestrictions" codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_RestrictionCode">otherRestrictions</gmd:MD_RestrictionCode>
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          <gmd:otherConstraints xsi:type="gmd:PT_FreeText_PropertyType">
            <gmx:Anchor xlink:href="http://inspire.ec.europa.eu/metadata-codelist/LimitationsOnPublicAccess/noLimitations">bez omezení veřejného přístupu</gmx:Anchor>
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          <gmd:otherConstraints xsi:type="gmd:PT_FreeText_PropertyType">
            <gmx:Anchor xlink:href="http://opendata.gov.cz/definition/opendata">Otevřená data ČR</gmx:Anchor>
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      </gmd:resourceConstraints>
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        <gmd:MD_SpatialRepresentationTypeCode codeListValue="vector" codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_SpatialRepresentationTypeCode">vector</gmd:MD_SpatialRepresentationTypeCode>
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      <gmd:spatialResolution>
        <gmd:MD_Resolution>
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            <gmd:MD_RepresentativeFraction>
              <gmd:denominator>
                <gco:Integer>10000</gco:Integer>
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          </gmd:equivalentScale>
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          <gmd:distance>
            <gco:Distance uom="m">1000</gco:Distance>
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        </gmd:MD_Resolution>
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      <gmd:language>
        <gmd:LanguageCode codeList="http://www.loc.gov/standards/iso639-2/" codeListValue="cze">cze</gmd:LanguageCode>
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      <gmd:topicCategory>
        <gmd:MD_TopicCategoryCode>climatologyMeteorologyAtmosphere</gmd:MD_TopicCategoryCode>
      </gmd:topicCategory>
      <gmd:topicCategory>
        <gmd:MD_TopicCategoryCode>health</gmd:MD_TopicCategoryCode>
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              <gmd:westBoundLongitude>
                <gco:Decimal>12.10</gco:Decimal>
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              <gmd:eastBoundLongitude>
                <gco:Decimal>18.91</gco:Decimal>
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              <gmd:southBoundLatitude>
                <gco:Decimal>48.59</gco:Decimal>
              </gmd:southBoundLatitude>
              <gmd:northBoundLatitude>
                <gco:Decimal>51.04</gco:Decimal>
              </gmd:northBoundLatitude>
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          </gmd:geographicElement>
          <gmd:geographicElement>
            <gmd:EX_GeographicDescription>
              <gmd:geographicIdentifier>
                <gmd:RS_Identifier>
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                    <gmx:Anchor xlink:href="http://publications.europa.eu/resource/authority/country/CZE">Česká republika</gmx:Anchor>
                  </gmd:code>
                </gmd:RS_Identifier>
              </gmd:geographicIdentifier>
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          </gmd:geographicElement>
          <gmd:temporalElement>
            <gmd:EX_TemporalExtent>
              <gmd:extent>
                <gml:TimePeriod gml:id="TBE1">
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          </gmd:temporalElement>
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    <gmd:MD_Distribution>
      <gmd:distributionFormat>
        <gmd:MD_Format>
          <gmd:name>
            <gco:CharacterString>ESRI Shapefile</gco:CharacterString>
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          <gmd:version>
            <gco:CharacterString>1.0</gco:CharacterString>
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        </gmd:MD_Format>
      </gmd:distributionFormat>
      <gmd:distributionFormat>
        <gmd:MD_Format>
          <gmd:name>
            <gco:CharacterString>PNG</gco:CharacterString>
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          <gmd:version gco:nilReason="unknown"/>
        </gmd:MD_Format>
      </gmd:distributionFormat>
      <gmd:transferOptions>
        <gmd:MD_DigitalTransferOptions>
          <gmd:onLine>
            <gmd:CI_OnlineResource>
              <gmd:linkage>
                <gmd:URL>https://opendata.chmi.cz/air_quality</gmd:URL>
              </gmd:linkage>
              <gmd:protocol>
                <gmx:Anchor xlink:href="https://services.cuzk.gov.cz/registry/codelist/OnlineResourceProtocolValue/WWW:LINK">WWW:LINK</gmx:Anchor>
              </gmd:protocol>
              <gmd:description xsi:type="gmd:PT_FreeText_PropertyType">
                <gmx:Anchor xlink:href="http://www.iana.org/assignments/media-types/application/vnd.shp">Plošné mapy (v síti 1x1 km) pětiletých průměrných koncentrací znečišťujících látek (shp, png)</gmx:Anchor>
                <gmd:PT_FreeText>
                  <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#locale-eng">Spatial maps (in a 1x1 km grid) of five-year average concentrations of pollutants (shp, png)</gmd:LocalisedCharacterString>
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                </gmd:PT_FreeText>
              </gmd:description>
              <gmd:function>
                <gmd:CI_OnLineFunctionCode codeListValue="download" codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#CI_OnLineFunctionCode">download</gmd:CI_OnLineFunctionCode>
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            </gmd:CI_OnlineResource>
          </gmd:onLine>
        </gmd:MD_DigitalTransferOptions>
      </gmd:transferOptions>
    </gmd:MD_Distribution>
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    <gmd:DQ_DataQuality>
      <gmd:scope>
        <gmd:DQ_Scope>
          <gmd:level>
            <gmd:MD_ScopeCode codeListValue="series" codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_ScopeCode"/>
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        </gmd:DQ_Scope>
      </gmd:scope>
      <gmd:report>
        <gmd:DQ_DomainConsistency>
          <gmd:result>
            <gmd:DQ_ConformanceResult>
              <gmd:specification>
                <gmd:CI_Citation>
                  <gmd:title xsi:type="gmd:PT_FreeText_PropertyType">
                    <gmx:Anchor xlink:href="https://data.europa.eu/eli/dir/2007/2">SMĚRNICE EVROPSKÉHO PARLAMENTU A RADY 2007/2/ES ze dne 14. března 2007 o zřízení Infrastruktury pro prostorové informace v Evropském společenství (INSPIRE)</gmx:Anchor>
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                        <gmd:LocalisedCharacterString locale="#locale-eng">DIRECTIVE 2007/2/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 14 March 2007 establishing an Infrastructure for Spatial Information in the European Community (INSPIRE)</gmd:LocalisedCharacterString>
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                    </gmd:PT_FreeText>
                  </gmd:title>
                  <gmd:date>
                    <gmd:CI_Date>
                      <gmd:date>
                        <gco:Date>2007-03-14</gco:Date>
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                      <gmd:dateType>
                        <gmd:CI_DateTypeCode codeListValue="publication" codeList="http://standards.iso.org/iso/19115/resources/Codelists/cat/codelists.xml#CI_DateTypeCode"/>
                      </gmd:dateType>
                    </gmd:CI_Date>
                  </gmd:date>
                </gmd:CI_Citation>
              </gmd:specification>
              <gmd:explanation xsi:type="gmd:PT_FreeText_PropertyType">
                <gco:CharacterString>Viz odkazovanou specifikaci</gco:CharacterString>
                <gmd:PT_FreeText>
                  <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#locale-eng">See referenced specification</gmd:LocalisedCharacterString>
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                </gmd:PT_FreeText>
              </gmd:explanation>
              <gmd:pass>
                <gco:Boolean>false</gco:Boolean>
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          </gmd:result>
        </gmd:DQ_DomainConsistency>
      </gmd:report>
      <gmd:report>
        <gmd:DQ_DomainConsistency>
          <gmd:result>
            <gmd:DQ_ConformanceResult>
              <gmd:specification>
                <gmd:CI_Citation>
                  <gmd:title xsi:type="gmd:PT_FreeText_PropertyType">
                    <gmx:Anchor xlink:href="https://ofn.gov.cz/základní-datové-typy/">OFN: Základní datové typy</gmx:Anchor>
                    <gmd:PT_FreeText>
                      <gmd:textGroup>
                        <gmd:LocalisedCharacterString locale="#locale-eng">OFN: Basic data types</gmd:LocalisedCharacterString>
                      </gmd:textGroup>
                    </gmd:PT_FreeText>
                  </gmd:title>
                  <gmd:date>
                    <gmd:CI_Date>
                      <gmd:date>
                        <gco:Date>2020-07-01</gco:Date>
                      </gmd:date>
                      <gmd:dateType>
                        <gmd:CI_DateTypeCode codeListValue="publication" codeList="http://standards.iso.org/iso/19115/resources/Codelists/cat/codelists.xml#CI_DateTypeCode"/>
                      </gmd:dateType>
                    </gmd:CI_Date>
                  </gmd:date>
                </gmd:CI_Citation>
              </gmd:specification>
              <gmd:explanation xsi:type="gmd:PT_FreeText_PropertyType">
                <gco:CharacterString>Viz odkazovanou specifikaci</gco:CharacterString>
                <gmd:PT_FreeText>
                  <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#locale-eng">See referenced specification</gmd:LocalisedCharacterString>
                  </gmd:textGroup>
                </gmd:PT_FreeText>
              </gmd:explanation>
              <gmd:pass>
                <gco:Boolean>true</gco:Boolean>
              </gmd:pass>
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          </gmd:result>
        </gmd:DQ_DomainConsistency>
      </gmd:report>
      <gmd:lineage>
        <gmd:LI_Lineage>
          <gmd:statement xsi:type="gmd:PT_FreeText_PropertyType">
            <gco:CharacterString>Plošné mapy (v síti 1x1 km) pětiletých průměrných koncentrací znečišťujících látek, které mají stanoven imisní limit pro roční průměrnou koncentraci, jsou spočítány v GIS z plošných map za jednotlivé roky. Mapy nejsou konstruovány z vypočteného průměru ročních průměrných koncentrací na jednotlivých stanicích za pět předchozích let a to zejména proto, že ne každý rok mají všechny stanice dostatek platných měření pro výpočet roční průměrné koncentrace a dále proto, že v průběhu let nastávají změny v sítích měřicích stanic. Pro doplnění jsou uvedeny i plošné mapy pětiletých průměrných koncentrací pro 36. max. hodnotu 24hod. průměrné koncentrace PM10, 4. max. hodnotu 24hod. průměrné koncentrace SO2, roční a zimní průměr SO2 a roční průměr NOx (tyto imisní charakteristiky zákon o ochraně ovzduší nevyžaduje). Podle zákona o ochraně ovzduší 201/2012 Sb., §11, odst. 5 a 6.</gco:CharacterString>
            <gmd:PT_FreeText>
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                <gmd:LocalisedCharacterString locale="#locale-eng">Surface maps (in a 1x1 km grid) of five-year average concentrations of pollutants with air quality limits for annual average concentrations are calculated in GIS from surface maps for individual years. The maps are not constructed from the calculated average of annual average concentrations at individual stations for the previous five years, primarily because not every year do all stations have enough valid measurements to calculate the annual average concentration, and also because changes occur in the monitoring station networks over the years. 

Additionally, surface maps of five-year average concentrations are provided for the 36th maximum value of the 24-hour average concentration of PM10, the 4th maximum value of the 24-hour average concentration of SO₂, the annual and winter average concentrations of SO₂, and the annual average concentration of NOₓ (these air quality characteristics are not required by the Air Protection Act).  

According to the Air Protection Act 201/2012 Coll., §11, paragraphs 5 and 6.</gmd:LocalisedCharacterString>
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        </gmd:LI_Lineage>
      </gmd:lineage>
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  </gmd:dataQualityInfo>
</gmd:MD_Metadata>
