All official European Union website addresses are in the europa.eu domain.
See all EU institutions and bodiesObserved concentrations of CO in 2018. The map shows the CO maximum daily 8-hour mean. Dots in the last two colour categories correspond to values above the EU annual limit value and the WHO AQG (10 mg/m3). Only stations with more than 75 % of valid data have been included in the map.
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