Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
1990,32888,34823,31391,34363,26378,35681,34029,35354,33192,34248,28814,27995,32404,
1991,29739,32228,31975,33663,32584,31900,30790,30785,31057,31956,28560,28514,31135,
1992,29108,23271,13339,13154,12838,18239,17692,17692,14698,14762,14007,14606,16983,
1993,13916,14871,15240,15602,15092,16163,15128,15585,15940,16056,14983,15003,15298,
1994,14520,15334,16110,15725,15451,16433,14554,14994,18142,17797,17371,14500,15905,
1995,14279,14795,14930,15181,15065,15858,14588,14975,14555,14945,14376,14254,14817,
1996,13931,14911,15421,15428,15430,16447,15020,15486,15027,14577,15449,,,
1997,12539,13283,13769,13885,13724,14576,13114,13486,15578,15728,12694,12726,13759,
1998,12454,13385,13536,13260,12711,13427,12048,12335,12076,11872,11175,11160,12453,
1999,11057,11409,14887,15524,15208,15555,14061,14206,13831,13980,13230,13348,13858,
2000,13485,14133,14162,14073,13875,14641,13568,13539,13450,13663,12922,13121,13719,
2001,11530,12182,12334,12546,12362,12796,12200,12420,11561,11528,11255,10808,11960,
2002,11002,11387,11283,11842,11626,11800,11369,11548,11121,11565,10954,10770,11356,
2003,10707,10940,10720,11231,11056,11387,10682,10673,10844,10960,9940,10314,10788,
2004,9995,10600,11085,11083,10712,10953,10953,10917,10756,10513,10257,10402,10686,
2005,10061,10639,11000,11002,10815,,,13059,12611,12451,12087,12100,,
2006,12084,12710,12961,12744,13000,13333,12172,12743,12764,12763,12098,11735,12592,
2007,12248,12650,12927,12785,12776,12781,12270,12785,12336,12825,12272,11753,12534,
2008,11997,12562,12290,12654,12409,12235,11968,11804,12011,12631,11521,11583,12139,
2009,11470,12274,11996,12382,11938,12514,12093,11983,12657,11972,11199,11356,11986,
2010,11208,12049,12209,12107,11705,12119,11737,11883,12109,11761,11304,11573,11814,
2011,11531,11885,12107,12184,12011,12170,11779,12198,11936,12095,11372,11582,11904,
2012,11512,12156,12249,12494,12343,12340,11770,12170,12230,12782,12294,11969,12192,
2013,11857,13221,13431,13283,12043,11946,11320,11709,11622,11751,11124,10880,12016,
2014,10934,11518,11849,12276,12051,12167,11742,12172,11846,12112,11036,11283,11749,
2015,11503,12243,12332,12461,12389,12792,12558,12535,12530,12694,10937,11023,12167,
2016,11298,11789,11888,12660,12393,12868,12241,0,12663,12876,12203,11593,12285,
2017,10944,12568,13234,13532,13647,13840,13010,13366,13445,13239,12553,12450,12986,
2018,12550,13414,13980,14969,14853,15240,14468,14741,14131,14149,13224,12624,14029,
2019,12818,13067,13827,14286,14101,14815,13794,14375,13845,13685,12979,12523,13676,
2020,12672,13373,10553,7385,9661,11205,10906,11137,10940,10983,9745,9542,10675,
2021,9689,10184,11119,11807,11914,12514,11771,11884,11311,11384,10340,10994,11243,
2022,9734,10561,11025,11450,11494,11615,11334,11779,11483,11228,10203,10004,10992,
2023,10224,10762,10759,11776,11717,11693,11075,11766,11346,11330,10755,10611,11151,
2024,9915,11429,11974, , , , , , , , , , ,