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	5-year average	Target value	Long term objective (LTO)
1996	15114	7683	23207		18000	6000
1997	14499	6103	24076		18000	6000
1998	15728	4643	26534		18000	6000
1999	17691	7538	26859		18000	6000
2000	16394	5106	29532	15885	18000	6000
2001	18672	6094	31117	16597	18000	6000
2002	16373	5551	28916	16971	18000	6000
2003	23117	7302	37693	18449	18000	6000
2004	13328	4695	23903	17577	18000	6000
2005	16960	4953	28081	17690	18000	6000
2006	25921	12844	37814	19140	18000	6000
2007	13707	3868	25441	18606	18000	6000
2008	16204	7075	25562	17224	18000	6000
2009	11060	3969	19125	16770	18000	6000
2010	15241	4953	24257	16427	18000	6000
2011	13176	4230	21032	13878	18000	6000
2012	12881	4210	23278	13713	18000	6000
2013	12843	3800	21734	13040	18000	6000
2014	13194	4167	21003	13467	18000	6000
2015	15651	2785	25842	13549	18000	6000
2016	11693.2	4361.58	18574.2	13252	18000	6000
2017	12991.6	2836.92	23877.1	13274	18000	6000