6. Carbon monoxide
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 · European Union
Eight-hour average Upper assessment threshold 70 % of limit value (7 mg/m^(3)) Lower assessment threshold 50 % of limit value (5 mg/m^(3))
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Source: EUR-Lex (Cellar) · retrieved 2026-09-25 · Text as consolidated on 2015-09-18; changes after this date are not shown.