Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg., 1990,759,819,914,1075,1555,2093,2758,2400,1724,1218,968,779,1426, 1991,775,909,961,1013,1472,2130,2848,2504,1856,1392,888,863,1472, 1992,834,893,1004,1180,1707,2184,3071,2689,1848,1426,977,885,1566, 1993,829,875,982,1134,1751,2213,2996,2750,2043,1523,868,786,1568, 1994,859,957,1097,1300,1909,2280,3152,2773,2100,1371,964,1012,1653, 1995,930,970,1081,1222,1689,2287,3193,3035,2202,1493,1073,1074,1687, 1996,885,996,1075,1187,1685,,3104,2867,2027,1396,1079,877,, 1997,902,961,1062,1145,1658,2076,3062,2850,1966,1539,1084,1011,1610, 1998,904,956,1024,1156,1676,2239,3186,2864,2036,1510,1127,1021,1642, 1999,954,977,1088,1143,1662,2245,3135,2891,2128,1592,1256,1087,1680, 2000,1009,1065,1175,1319,1818,2381,3161,2813,1972,1545,1124,1021,1700, 2001,1010,1030,1143,1228,1835,2267,3136,2842,2037,1555,1185,991,1688, 2002,957,1020,1082,1183,1726,2246,2991,2742,1877,1498,1219,1068,1634, 2003,980,996,1057,1195,1867,2246,2932,2595,1812,1507,1148,1004,1612, 2004,947,1022,1103,1229,1688,2144,2912,2510,1895,1491,1115,1002,1588, 2005,868,991,1018,1135,1616,1986,2912,2473,1797,1413,1073,986,1522, 2006,899,953,1027,1110,1621,2097,2851,2498,1916,1456,1167,1075,1556, 2007,1009,1080,1171,1283,1728,2200,2944,2599,1992,1545,1204,972,1644, 2008,868,904,982,1099,1492,1867,2731,2454,1689,1354,1090,959,1457, 2009,917,946,966,1111,1648,2012,3082,2533,1901,1336,1029,977,1538, 2010,899,911,1002,1039,1423,1996,3004,2569,1922,1438,1059,999,1522, 2011,914,977,976,1065,1393,2049,2996,2615,1989,1436,1022,979,1534, 2012,924,979,990,1157,1544,2050,2872,2517,1866,1401,1070,922,1524, 2013,842,890,951,1047,1484,1971,2784,2383,1725,1365,994,861,1441, 2014,822,838,987,1064,1492,1966,2973,2379,1690,1385,978,928,1459, 2015,897,991,1076,1158,1460,2142,2959,2407,1827,1375,1028,925,1520, 2016,865,942,1006,1134,1605,2248,3182,2508,1853,1411,1103,923,1565, 2017,737,923,1005,1152,1642,2269,3135,2650,1829,1404,1073,1003,1569, 2018,953,992,1034,1180,1674,2249,3189,2511,1901,1465,1114,974,1603, 2019,918,950,1032,1197,1614,2276,3107,2576,1841,1421,1102,973,1584, 2020,899,995,1010,1090,1700,2267,3182,2852,2199,1655,1188,1129,1681, 2021,1132,1149,1261,1457,1978,2797,3490,2747,2131,1678,1396,1190,1867, 2022,1114,1260,1201,1371,1862,2543,3397,2742,2229,1784,1340,1137,1832, 2023,1093,1113,1134,1307,1897,2576,3564,2791,2198,1769,1349,1151,1828, 2024,1063,1111, , , , , , , , , , , ,