Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg., 1990,994,1084,1186,1243,1285,1385,1416,1444,1402,1320,1209,977,1246, 1991,997,1084,1246,1252,1305,1411,1486,1487,1381,1376,1191,1094,1277, 1992,1058,1183,1257,1317,1369,1488,1523,1537,1552,1588,1291,1135,1362, 1993,1127,1259,1335,1303,1382,1572,1616,1617,1586,1455,1202,1139,1383, 1994,1091,1128,1300,1377,1452,1543,1586,1587,1438,1331,1203,1092,1345, 1995,1081,1084,1281,1327,1382,1509,1608,1624,1507,1494,1306,1153,1363, 1996,1062,1179,1303,1327,1419,1602,1659,1616,1528,1406,1255,1033,1366, 1997,1113,1196,1308,1291,1438,1588,1616,1635,1555,1507,1407,1170,1402, 1998,1140,1259,1341,1395,1487,1650,1729,1765,1683,1522,1373,1204,1462, 1999,1176,1258,1392,1424,1522,1678,1748,1781,1617,1554,1426,1272,1487, 2000,1202,1270,1412,1427,1476,1718,1800,1858,1673,1604,1421,1226,1507, 2001,1320,1324,1485,1516,1550,1712,1736,1787,1627,1549,1414,1200,1518, 2002,1216,1337,1440,1461,2078,2427,2664,2653,2350,2071,1703,1579,1915, 2003,1529,1536,1631,1681,1984,2365,2650,2644,2346,1725,1335,1169,1883, 2004,1157,1224,1397,1400,1495,1583,1673,1647,1575,1478,1312,1200,1428, 2005,1111,1278,1360,1345,1407,1576,1668,1658,1568,1519,1370,1177,1420, 2006,1160,1218,1317,1353,1422,1551,1631,1617,1554,1431,1322,1118,1391, 2007,1151,1231,1376,1402,1463,1579,1699,1817,1744,1685,1516,1164,1486, 2008,1126,1208,1300,1355,1451,1502,1549,1581,1512,1415,1238,1073,1359, 2009,1052,1093,1150,1195,1313,1413,1511,1410,1433,1257,1158,986,1248, 2010,983,1042,1138,1195,1284,1399,1546,1491,1437,1277,1138,1004,1245, 2011,990,1016,1114,1127,1274,1371,1436,1395,1412,1265,1107,1019,1211, 2012,982,952,1077,1123,1236,1338,1382,1353,1335,1212,1119,923,1169, 2013,911,936,1035,1018,1185,1311,1479,1398,1306,1188,1105,979,1154, 2014,946,935,1069,1076,1172,1295,1436,1397,,,1014,944,, 2015,915,939,1056,1059,1101,1423,1379,1341,1319,1162,1029,878,1134, 2016,894,955,1006,1020,1162,1338,1478,1388,1326,1237,1094,902,1150, 2017,814,899,1052,1102,1182,1332,1448,1387,1333,1205,1081,942,1148, 2018,904,937,1045,1110,1210,1361,1503,1464,1414,1277,1106,925,1188, 2019,886,860,1023,1109,1242,1410,1462,1436,1374,1085,965,876,1144, 2020,840, ,917,867,1129,1302,1438,1371,1383,1285,1060,936,1117, 2021,926,867,1011,1100,1256,1421,1551,1422,1379,1268, ,969,1197, 2022, ,916, ,1099,1221,1361, ,1392, ,1238, , , , 2023, , , , , , , , , , , , , , 2024, , , , , , , , , , , , , ,