Figure 6: Frequency distribution of ozone concentrations
Frequency Distribution of Ozone Concentrations
Figure 6. Frequency distribution of ozone concentrations (hourly values) in excess of the 180 µg/m3 threshold for hourly 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.
For references, please go to http://www.eea.europa.eu/publications/C1I92-9167-074-X/page012.html or scan the QR code.
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