Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
1990,345,363,470,568,618,861,1075,978,769,617,449,311,620,
1991,336,401,421,546,599,796,1117,1011,825,673,389,343,623,
1992,319,350,521,551,618,887,1245,920,765,640,405,288,629,
1993,233,248,371,437,526,744,1082,992,912,860,566,384,615,
1994,364,420,579,682,762,1049,1418,1300,1202,883,594,487,814,
1995,489,546,626,727,916,1010,,1298,,920,664,532,,
1996,524,529,611,739,794,957,1290,1171,967,848,577,461,789,
1997,445,478,537,655,734,901,1196,1186,984,819,594,443,748,
1998,384,429,539,675,752,963,1294,1189,985,773,533,395,743,
1999,357,354,450,588,666,871,1215,1125,956,748,565,406,692,
2000,364,384,490,587,687,922,1237,1059,812,693,461,355,671,
2001,326,330,452,559,671,878,1190,1082,857,700,488,273,651,
2002,314,330,368,656,631,855,1146,1140,939,735,450,347,659,
2003,323,343,428,625,670,1047,1244,1081,905,778,508,390,695,
2004,364,378,537,671,681,893,1195,1050,882,710,510,396,689,
2005,361,425,518,613,709,933,1206,1047,858,724,523,378,691,
2006,369,420,500,644,708,918,1254,1206,891,748,544,421,719,
2007,424,442,595,712,796,1005,1202,1135,962,860,618,483,770,
2008,442,485,595,742,766,972,1169,1073,843,735,541,417,732,
2009,424,454,470,666,671,913,1192,1006,877,698,513,441,694,
2010,416,479,629,727,683,941,1249,1166,935,773,543,429,748,
2011,444,467,533,669,663,910,1205,1169,1050,817,,597,766,
2012,418,433,507,654,655,908,1210,1013,779,662,459,353,671,
2013,328,348,396,505,564,773,1043,963,704,595,420,325,580,
2014,331,301,413,572,624,873,1177,974,776,730,356,264,,
2015,271,307,445,430,530,810,975,854,692,557,327,229,536,
2016,235,274,393,438,512,812,1050,799,712,558,381,230,533,
2017,209,186,331,416,510,711,1023,1109,715,577,371,277,536,
2018,256,281,359,422,555,827,1096,960,784,593,381,285,567,
2019,243,228,287,379,513,811,1061,1004,774,493,375,282,537,
2020,226,258,309,329,523,823,1261,1140, , ,393,307,557,
2021,276,281,392,503,629,981,1187,1052,858,664,416,292,628,
2022,259,298,372,488,556,825,1133,997,812,671,367,259,586,
2023,246,290,288,402,579,877,1225,1058,762,692,436,319,598,
2024,262,278,390,468, , , , , , , , , ,