The graphs are based on annual mean concentration trends (top) and the trends in percentile 99.78 of NO2 hourly values
(bottom); they present the range of concentration changes per year (in μg/m3) per station type (urban, traffic, rural, and
other — mostly industrial). The trends are calculated based on the officially reported data by the EU Member States with a
minimum data coverage of 75 % of valid data per year for at least 8 years out of the 10-year period.
The diagram indicates the lowest and highest trends, the means and the lower and upper quartiles, per station type. The
lower quartile splits the lowest 25 % of the data and the upper quartile splits the highest 25 % of the data.
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Get on the move and cycle, walk or use public transport!
You'll improve your health and lessen your impact on the environment. Remember that for each litre of fuel burnt in a car engine, more than 2.5 kg of CO2 is released into the atmosphere.
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