Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg., 2011,,,,,,,,11806,11401,11786,11413,12015,, 2012,12014,13328,12526,12407,12139,11934,11150,11605,11841,11976,11573,12450,12079, 2013,12224,12856,12154,12289,12237,11772,11185,11595,12033,12152,11597,12279,12031, 2014,12427,12825,12312,12729,12501,12150,11547,11924,12192,12364,11489,12734,12266, 2015,12830,12663,12364,12541,12667,,11565,12059,12500,12638,12057,13340,, 2016,13333,13356,12821,13127,12705,12772,12193,12750,13189,13082,12560,13450,12945, 2017,13005,13731,13294,13505,13283,13112,12647,12912,13049,13517,12726,13121,13159, 2018,13151,13670,13727,13811,13803,13802,13292,12320,13434,13466,12460,14196,13428, 2019,14013,14507,14203,14132,13659,14014,13543,13895,13546,13544,12790,13627,13789, 2020,13762,13950,10768,7942,10084,10985,10795,12506,11789,12031,10932,12088,11469, 2021,11917,12242,12107,12406,12521,12474,11988,12061,11950,12175,11350,12521,12143, 2022,12043,12316,11924,12158,12068,11780,11339,11922,12307,12753,11990,12905,12125, 2023,12946,12985,12327,12435,12011,11734,11074,11410,11830,12164,11349,12490,12063, 2024,11944,12936, , , , , , , , , , , ,