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Frequency Distribution of Ozone Concentrations

AT BE DE DK ES FI FR GB GR IE IT LU NL PT SE
#ex 12245 911 25052 623 4212 1276 3949 1868 1032 705 2008 389 1646 467 832
#st 110 20 347 6 80 11 98 32 10 6 44 5 37 9 6


Figure 9. Frequency distribution of ozone concentrations (24h values) in excess of the 65 µg/m3 threshold for daily values. For each country the total number of observed exceedances is given in row '#Ex', the number of stations is given in row '#St'. Frequency distributions are presented as Box-Jenkins plots indicating the minimum, the 25-Percentile, the 75-percentile and the maximum value.