Figure 11: Frequency distribution of ozone concentrations (hourly values)

Frequency Distribution Ozone Concentrations

	AT	BE	DE	DK	ES	FI	FR	GB	GR	IE	IT	LU	NL	PT	SE

#ex	37	98	745	2	17	0	154	40	102	6	166	13	136	12	1
#st	110	20	342	6	86	11	110	32	10	6	57	5	37	8	6

Figure 11. Frequency distribution of ozone concentrations (hourly values) in excess of the 200 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.