Distance-to-target graphs for the ozone target threshold for protection of human health (top) and protection of crops (middle) and forests (bottom), in 2010

The graphs show the percentage frequency distribution of the 26th highest daily maximum of the running 8h-mean O3 concentrations for the various types of stations (top); AOT40 concentrations measured in rural stations in the EU for the protection of vegetation (accumulated over May to July) (middle) and for the protection of forests (accumulated over April to September) (bottom).