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Nitrogen oxide - Annual limit value for the protection of vegetation

Figure Created 05 Feb 2014 Published 28 Mar 2014 Last modified 05 Oct 2015
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This page was archived on 04 Sep 2014 with reason: Other (New version data-and-maps/figures/nitrogen-oxide-annual-limit-value-for-the-protection-of-vegetation was published)
In the air quality directive (2008/EC/50), the EU has set a critical level for nitrogen oxides (NOx) for the protection of vegetation within the zones designated by member states: the NOx annual mean value may not exceed 30 micrograms per cubic metre (µg/m3).

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