Noord
Classification of Member State into zones or agglomerations, reflecting the population density, for the assessment of ambient air quality following requirements of EU-Directive 2008/50/EC
National Institute for Public Health and the Environment (RIVM), the Netherlands
NL.RIVM.AQ
boundaries: CBS Gebiedsindelingen (geaggregeerd vanuit gegeneraliseerde gemeentegrenzen); population and area: CBS Regionale kerncijfers Nederland (geaggregeerd vanuit gemeenten)

Midden
Classification of Member State into zones or agglomerations, reflecting the population density, for the assessment of ambient air quality following requirements of EU-Directive 2008/50/EC
National Institute for Public Health and the Environment (RIVM), the Netherlands
NL.RIVM.AQ
boundaries: CBS Gebiedsindelingen (geaggregeerd vanuit gegeneraliseerde gemeentegrenzen); population and area: CBS Regionale kerncijfers Nederland (geaggregeerd vanuit gemeenten)

Amsterdam/Haarlem
Classification of Member State into zones or agglomerations, reflecting the population density, for the assessment of ambient air quality following requirements of EU-Directive 2008/50/EC
National Institute for Public Health and the Environment (RIVM), the Netherlands
NL.RIVM.AQ
boundaries: CBS Gebiedsindelingen (geaggregeerd vanuit gegeneraliseerde gemeentegrenzen); population and area: CBS Regionale kerncijfers Nederland (geaggregeerd vanuit gemeenten)

Utrecht

Den Haag/Leiden

Rotterdam/Dordrecht

Zuid

Eindhoven

Heerlen/Kerkrade