Figure 10. O3 concentrations in 2021 by country in relation to the EU target value

The figure shows, per country, the concentrations of each reported station, the minimum and maximum concentrations, the median and the percentiles 25 (“Lower Hinge”) and 75 (“Upper Hinge”) of all the measurements.

Data are presented here for one year only, not the average over a three-year period as stated in the definition of the EU target value for O₃.