year,CO,NH3,NOx,Direct PM2.5,Direct PM10,SO2,VOC,,,
1990,143605,4320,25165,2327,3217,23065,23125,,,
1991,136545,4384,24933,2317,3112,22363,22899,,,
1992,134506,4443,25027,2344,3140,22073,22659,,,
1993,129365,4518,25122,2223,3036,21764,22252,,,
1994,124469,4589,24968,2183,2989,21332,21932,,,
1995,120073,4659,24697,2203,3055,18609,21578,,,
1996,114356,4727,24382,2003,2638,18370,19001,,,
1997,111117,4817,24526,2012,2656,18834,18786,,,
1998,108726,4940,24176,1981,2585,18939,18136,,,
1999,104033,4857,22609,2700,3198,17478,17603,,,
2000,102418,4907,22335,2600,3098,16278,16898,,,
2001,98518,3689,21378,2606,3127,15888,16699,,,
2002,87981,3769,23845,2549,3693,14952,17076,,,
2003,85541,3780,22537,2542,3679,14728,16697,,,
2004,83096,3791,21218,2533,3660,14491,16300,,,
2005,80646,3802,20261,2523,3639,14490,15885,,,
2006,77937,3947,19133,2353,3461,13067,16034,,,
2007,75228,4092,18005,2184,3283,11643,16183,,,
2008,67455,4161,16813,2003,3084,10254,14912,,,
2009,60552,4117,15675,1927,2913,9019,14747,,,
2010,61571,4073,14750,1853,2747,7662,14988,,,
2011,61060,3829,14334,1812,2708,6383,15263,,,
2012,59057,3619,13694,1772,2628,4983,14981,,,
2013,57053,3610,13054,1731,2549,4778,14699,,,
2014,55050,3400,12470,1691,2470,4603,14416,,,
2015,53029,3592,11563,1624,2405,3874,13864,,,
2016,48417,3783,10185,1540,2302,3133,12992,,,
2017,47118,3979,9608,1492,2258,2404,12607,,,
2018,46006,3976,9119,1479,2245,2302,12416,,,
2019,44895,3973,8556,1465,2231,2007,12225,,,
2020,43783,3970,7997,1451,2217,1827,12035,,,