Year	Average of all stations	At 10 % of the stations a lower AOT40 is measured	At 90 % of the stations a lower AOT40 is measured	p90*	Five-year average	Target value	Long term objective (LTO)
1996	15444	7780	24192	16412		18000	6000
1997	14463	5647	24098	18451		18000	6000
1998	15775	4674	27261	22587		18000	6000
1999	17630	7760	26792	19032		18000	6000
2000	16507	5371	29555	24185	15964	18000	6000
2001	18713	7304	31363	24059	16617	18000	6000
2002	16569	5488	28782	23295	17038	18000	6000
2003	23512	8378	38451	30073	18586	18000	6000
2004	13492	4605	24687	20082	17758	18000	6000
2005	17202	4971	28620	23650	17897	18000	6000
2006	26336	13545	37958	24414	19422	18000	6000
2007	13839	4131	25341	21210	18876	18000	6000
2008	16376	7659	25178	17519	17449	18000	6000
2009	10985	3935	19533	15598	16948	18000	6000
2010	15457	5261	24641	19380	16599	18000	6000
2011	13193	4241	21294	17054	13970	18000	6000
2012	12895	4318	22848	18529	13781	18000	6000
2013	13005	4071	21946	17875	13107	18000	6000