# Directive 2008/50/EC of the European Parliament and of the Council of 21 May 2008 on ambient air quality and cleaner air for Europe, Division C: Long-term objectives

Extent: E+W+S+N.I.

Objective
Averaging period
Longterm objective
Date by which the longterm objective should be met
Protection of human health
Maximum daily eight-hour mean within a calendar year
120 μg/m3
not defined
Protection of vegetation
May to July
AOT40 (calculated from 1 h values) 6 000 μg/m3 · h
not defined

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Source: https://www.legislation.gov.uk/eudr/2008/50/annex/VII/division/C (the official version)
Page: https://openlegislation.uk/eu-directive-2008-50/annex-VII/division-C
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.