Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg., 1990,1078,1183,1491,1736,1986,2451,2721,2686,2304,1905,1572,1281,1870, 1991,1063,1491,1570,1694,2069,2434,2673,2792,2317,1911,1399,1358,1900, 1992,1294,1455,1708,1831,2100,2470,2847,2664,2339,2007,1441,1169,1951, 1993,882,1046,1480,1828,2081,2500,2953,2888,2468,2132,1609,1381,1943, 1994,1297,1338,1719,1865,2230,2647,3083,2833,2527,2136,1456,1256,2037, 1995,1227,1415,1569,1759,2133,2548,2982,3013,2621,2271,1824,1513,2073, 1996,1173,1446,1697,1860,2028,2517,2879,2848,2462,2095,1591,1219,1985, 1997,1221,1442,1608,1713,2068,2665,2853,2816,2344,1989,1607,1357,1974, 1998,1172,1345,1533,1753,2075,2468,2785,2785,2417,2054,1628,1294,1942, 1999,1246,1235,1564,1775,2082,2593,2957,2866,2563,2163,1813,1448,2025, 2000,1276,1476,1686,1914,2213,2515,2893,2724,2406,2155,1646,1429,2028, 2001,1302,1411,1664,1869,2207,2485,2784,2773,2493,2200,1796,1265,2021, 2002,1268,1458,1626,1904,2227,2600,2927,2948,2589,2438,1970,1710,2139, 2003,1480,1600,1724,1923,2254,2675,2938,2813,2481,2044,1647,1460,2087, 2004,1236,1447,1775,1994,2214,2510,2858,2676,2498,2148,1798,1534,2057, 2005,1227,1558,1731,1938,2168,2496,2831,2558,2291,1955,1615,1393,1980, 2006,1233,1443,1569,1810,2035,2274,2451,2358,2194,2013,1696,1442,1877, 2007,1372,1480,1716,1855,2137,2370,2612,2587,2373,2132,1816,1385,1986, 2008,1149,1218,1563,1750,2020,2254,2498,2386,2177,1958,1651,1284,1826, 2009,1269,1393,1568,1792,2131,2349,2739,2559,2425,2013,1721,1484,1954, 2010,1300,1518,1755,1929,2132,2608,2992,2797,2654,2154,1703,1414,2080, 2011,1460,1525,1608,1852,2006,2379,2888,2579,2386,1887,1527,1522,1968, 2012,1382,1460,1595,1849,2035,2337,2729,2584,2353,1967,1619,1373,1940, 2013,1178,1355,1596,1778,2063,2383,2746,2572,2260,1896,1615,1398,1903, 2014,1365,1331,1696,1807,2105,2447,2778,2537,2307,2060,,1415,, 2015,1382,,1868,1832,2162,2643,2999,2727,2538,2130,1597,1308,, 2016,1354,1562,1802,1972,2267,2796,3149,2992,2713,2242,1892,1333,2173, 2017,1092,1594,1746,1971,2412,2989,3310,3816,2890,2447,1947,1611,2319, 2018,1570,1658,1789,2118,2519,3012,3388,3131,2929,2459,1980,1575,2344, 2019,1459,1332,1854,2154,2539,3133,3513,3205,2890,2355,1964,1641,2337, 2020,1424,1577,1592,1457,2257,2940,3563,3261,3254,2670,1844,1640,2290, 2021,1575,1595,1712,2298,2831,3422,3633,3342,3091,2550,2131,1576,2480, 2022,1444,1683,1940,2122,2604,3170,3429,3200,3027, ,1947,1390,2387, 2023,1550,1583,1620,2130,2760,3405,3852,3666,3410,2825,2254,1846,2575, 2024,1576,1812, , , , , , , , , , , ,