| YEAR(S | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1948 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 104.50 | 189.50 | 599.50 | 1097.00 | 1280.00 | 3270.50 | ||||||
| 1949 | 1558.50 | 1280.00 | 983.00 | 641.38 | a | 475.50 | 212.50 | 50.00 | 95.50 | 262.50 | 749.68 | a | 756.50 | 1345.50 | 8410.56 | |||||||||||
| 1950 | 1325.50 | 939.50 | 1038.50 | 742.00 | 623.50 | 153.50 | 133.50 | 220.00 | 373.50 | 493.50 | 872.50 | 1111.35 | a | 8026.85 | ||||||||||||
| 1951 | 1232.00 | 1081.00 | 1025.07 | a | 711.50 | 411.50 | 233.00 | 24.00 | 79.00 | 305.00 | 683.50 | 1077.00 | 1364.50 | 8227.07 | ||||||||||||
| 1952 | 1374.50 | 1254.00 | 1163.50 | 616.50 | 423.00 | 122.00 | 83.00 | 15.50 | z | 236.40 | e | 508.00 | 1148.50 | 1493.50 | 8422.90 | |||||||||||
| 1953 | 1151.50 | 1105.00 | 902.50 | 723.50 | 545.00 | 126.50 | 38.00 | 100.50 | 246.00 | 555.00 | 927.50 | 1427.50 | 7848.50 | |||||||||||||
| 1954 | 1296.50 | 845.00 | 982.50 | 526.50 | 359.00 | 176.50 | 31.50 | 101.00 | 248.50 | 507.00 | 813.50 | 1277.50 | 7165.00 | |||||||||||||
| 1955 | 1388.80 | a | 1219.50 | 950.00 | 757.50 | 473.50 | 248.00 | 72.50 | 53.00 | 264.83 | a | 546.50 | 955.50 | 1146.50 | 8076.13 | |||||||||||
| 1956 | 1142.35 | a | 1241.00 | 887.12 | a | 685.71 | b | 329.63 | a | 105.00 | a | 63.50 | 166.50 | 212.00 | 577.00 | 1074.11 | b | 1187.00 | 7670.92 | |||||||
| 1957 | 1287.00 | 873.00 | 933.00 | 773.28 | a | 571.50 | 216.50 | 89.90 | a | 110.50 | 318.50 | 621.50 | 1148.50 | 1222.95 | a | 8166.13 | ||||||||||
| 1958 | 1325.25 | a | 963.00 | 1051.50 | 757.76 | a | 342.00 | 136.55 | a | 86.00 | 62.00 | 243.21 | b | 545.50 | 912.41 | a | 1041.00 | 7466.19 | ||||||||
| 1959 | 1339.00 | 1092.52 | a | 973.63 | d | 650.89 | b | 448.98 | a | 116.50 | 70.00 | 90.00 | 271.11 | c | 607.17 | b | 942.86 | b | 1149.07 | a | 7751.73 | |||||
| 1960 | 1498.00 | 1339.00 | 893.83 | a | 620.69 | a | 473.78 | a | 139.00 | 66.00 | 92.00 | 229.82 | b | 474.50 | i | 876.72 | a | 1383.50 | 7612.35 | |||||||
| 1961 | 1404.50 | 1015.78 | a | 939.50 | 688.00 | 414.00 | 153.50 | 96.50 | 98.00 | 377.50 | 605.00 | 1132.50 | 1508.50 | 8433.28 | ||||||||||||
| 1962 | 1377.50 | 959.00 | 1112.50 | 568.00 | 435.00 | 234.50 | 121.00 | 127.00 | 279.50 | 511.00 | 858.50 | 1089.50 | 7673.00 | |||||||||||||
| 1963 | 1442.00 | 1005.00 | 970.50 | 641.00 | 332.00 | 219.00 | 25.00 | 101.50 | 194.00 | 450.00 | 881.00 | 1262.50 | 7523.50 | |||||||||||||
| 1964 | 1387.00 | 1368.00 | 1200.00 | 744.00 | 405.50 | 243.50 | 26.00 | 129.00 | 305.00 | 518.50 | 1000.50 | 1450.00 | 8777.00 | |||||||||||||
| 1965 | 1370.50 | 1179.50 | 1134.00 | 677.50 | 489.50 | 272.50 | 85.00 | 149.50 | 372.00 | 501.00 | 804.50 | 1185.50 | 8221.00 | |||||||||||||
| 1966 | 1503.00 | 1313.00 | 925.00 | 630.50 | 358.00 | 208.00 | 12.00 | 114.00 | 240.00 | 562.65 | a | 811.00 | 1202.00 | 7879.15 | ||||||||||||
| 1967 | 1262.50 | 988.00 | 785.50 | 675.50 | 460.50 | 261.50 | 36.00 | 145.00 | 281.00 | 510.50 | 828.00 | 1444.50 | 7678.50 | |||||||||||||
| 1968 | 1513.00 | 1159.50 | 966.50 | 776.90 | a | 458.50 | 143.00 | 98.00 | 188.00 | 345.50 | 510.50 | 982.50 | 1350.00 | 8491.90 | ||||||||||||
| 1969 | 1150.50 | 1062.50 | 1036.50 | 584.00 | 346.68 | a | 282.00 | 58.50 | 50.50 | 296.00 | 775.00 | 915.50 | 1251.50 | 7809.18 | ||||||||||||
| 1970 | 1331.50 | 902.50 | 1014.50 | 807.00 | 391.00 | 256.00 | 67.00 | 62.50 | 358.50 | 729.50 | 889.00 | 1184.00 | 7993.00 | |||||||||||||
| 1971 | 1259.00 | 1056.00 | 914.50 | 700.00 | 497.50 | 198.00 | 116.50 | 100.00 | 337.50 | 630.50 | 961.50 | 1300.50 | 8071.50 | |||||||||||||
| 1972 | 1316.50 | 955.00 | 728.50 | 598.00 | 420.50 | 161.00 | 97.50 | 127.50 | 266.50 | 541.50 | 1243.00 | 1493.50 | 7949.00 | |||||||||||||
| 1973 | 1590.00 | 1235.50 | 1040.50 | 798.00 | 414.50 | 217.00 | 146.50 | 133.00 | 340.00 | 568.50 | 830.00 | 1163.00 | 8476.50 | |||||||||||||
| 1974 | 1486.00 | 1261.00 | 754.50 | 687.50 | 321.50 | 187.50 | 116.50 | 190.00 | 328.50 | 547.50 | 946.50 | 1412.50 | 8239.50 | |||||||||||||
| 1975 | 1536.00 | 1195.50 | 982.50 | 778.50 | 478.00 | 265.00 | 87.00 | 147.50 | 342.50 | 572.00 | 1000.50 | 1332.50 | 8717.50 | |||||||||||||
| 1976 | 1429.50 | 944.00 | 941.00 | 649.50 | 428.50 | 228.00 | 66.50 | 192.00 | 316.55 | a | 678.50 | 913.50 | 1425.50 | 8213.05 | ||||||||||||
| 1977 | 1466.00 | 1019.00 | 1025.00 | 599.50 | 429.00 | 116.00 | 59.00 | 67.68 | a | 239.50 | 507.00 | 851.50 | 1063.50 | 7442.68 | ||||||||||||
| 1978 | 1183.50 | 961.50 | 746.00 | 588.00 | 497.55 | a | 148.50 | 65.00 | 138.50 | 248.50 | 475.50 | 877.50 | 1579.00 | 7509.05 | ||||||||||||
| 1979 | 1604.50 | 0.00 | z | 1046.00 | 624.50 | 433.50 | 207.00 | 78.50 | 163.00 | 216.00 | 463.00 | 1129.00 | 1172.50 | 7137.50 | ||||||||||||
| 1980 | 1233.00 | 943.00 | 1010.50 | 716.00 | 495.00 | 120.00 | 5.50 | 108.50 | 221.50 | 618.00 | 889.00 | 965.00 | 7325.00 | |||||||||||||
| 1981 | 1087.50 | 948.00 | 920.00 | 502.50 | 455.50 | 88.50 | 23.00 | 113.50 | 248.00 | 609.00 | 799.50 | 1176.50 | 6971.50 | |||||||||||||
| 1982 | 1275.50 | 1135.00 | 897.00 | 694.00 | 464.50 | 219.00 | 47.50 | 0.00 | z | 286.00 | 657.50 | 967.00 | 1229.50 | 7872.50 | ||||||||||||
| 1983 | 1191.00 | 989.50 | 893.00 | 810.00 | 505.50 | 239.00 | 33.50 | 34.00 | 171.50 | 517.00 | 990.00 | 1397.00 | 7771.00 | |||||||||||||
| 1984 | 1680.50 | 1345.00 | 1071.50 | 747.50 | 277.50 | 185.50 | 14.00 | 56.00 | 217.50 | 739.50 | 946.00 | 1260.50 | 8541.00 | |||||||||||||
| 1985 | 1405.50 | 1210.00 | 903.00 | 582.50 | 388.00 | 133.00 | 52.50 | 64.50 | 344.00 | 549.00 | 967.76 | a | 1288.00 | 7887.76 | ||||||||||||
| 1986 | 1112.00 | 925.50 | 753.00 | 622.50 | 445.50 | 145.50 | 72.50 | 54.00 | 360.00 | 612.50 | 952.50 | 1277.00 | 7332.50 | |||||||||||||
| 1987 | 1388.50 | 1095.00 | 1056.50 | 587.50 | 424.00 | 107.50 | 62.00 | 107.50 | 293.00 | 469.00 | 1011.00 | 1442.50 | 8044.00 | |||||||||||||
| 1988 | 1610.00 | 1216.50 | 981.50 | 584.50 | 446.00 | 138.00 | 53.00 | 82.50 | 323.00 | 472.50 | 975.00 | 1396.00 | 8278.50 | |||||||||||||
| 1989 | 1495.00 | 1228.50 | 771.50 | 541.00 | 350.50 | 211.00 | 39.00 | 129.50 | 293.50 | 634.50 | 855.00 | 1254.50 | 7803.50 | |||||||||||||
| 1990 | 1371.50 | 1016.00 | 825.00 | 579.00 | 458.50 | 119.00 | 97.00 | 166.00 | 238.50 | 602.00 | 933.50 | 1442.50 | 7848.50 | |||||||||||||
| 1991 | 1539.00 | 993.00 | 969.00 | 708.00 | 436.50 | 214.50 | 82.50 | 84.00 | 312.00 | 541.50 | 1161.00 | 1566.50 | 8607.50 | |||||||||||||
| 1992 | 1633.00 | 1292.50 | 1024.00 | 516.50 | 373.50 | 213.00 | 129.00 | 161.50 | 276.50 | 498.50 | 1152.50 | 1561.00 | 8831.50 | |||||||||||||
| 1993 | 1469.00 | 1191.50 | 919.50 | 665.00 | 431.00 | 209.50 | 78.00 | 156.00 | 364.50 | 674.00 | 1121.00 | 1366.50 | 8645.50 | |||||||||||||
| 1994 | 1268.00 | 1099.00 | 817.50 | 655.00 | 377.50 | 97.00 | 68.50 | 56.00 | 276.00 | 644.00 | 1047.00 | 1202.00 | 7607.50 | |||||||||||||
| 1995 | 1209.50 | 788.00 | 874.50 | 729.00 | 521.00 | 248.50 | 123.50 | 42.50 | 314.50 | 586.00 | 847.50 | 1117.00 | 7401.50 | |||||||||||||
| 1996 | 1238.50 | 925.00 | 920.00 | 630.50 | 257.00 | 119.50 | 23.50 | 85.50 | 324.50 | 646.00 | 916.50 | 1224.00 | 7310.50 | |||||||||||||
| 1997 | 1366.50 | 1109.00 | 851.00 | 756.00 | 411.00 | 177.00 | 74.00 | 90.50 | 222.50 | 626.50 | 1035.00 | 1445.50 | 8164.50 | |||||||||||||
| 1998 | 1337.00 | 1092.50 | 954.00 | 749.50 | 403.00 | 222.00 | 40.50 | 93.00 | 220.00 | 665.00 | 941.50 | 1233.00 | 7951.00 | |||||||||||||
| 1999 | 1167.50 | 974.00 | 841.00 | 796.00 | 544.50 | 239.50 | 60.50 | 134.00 | 356.00 | 591.00 | 825.00 | 1296.00 | 7825.00 | |||||||||||||
| 2000 | 1221.00 | 1008.50 | 944.00 | 622.76 | a | 355.00 | 168.00 | 56.50 | 78.50 | 283.50 | 674.50 | 1208.00 | 1288.50 | 7908.76 | ||||||||||||
| 2001 | 1462.17 | a | 1223.50 | 1007.50 | 685.00 | 417.00 | 216.50 | 93.00 | 159.00 | 300.50 | 658.00 | 971.00 | 1430.00 | 8623.17 | ||||||||||||
| 2002 | 1478.50 | 1229.00 | 1083.50 | 583.00 | 449.50 | 0.00 | z | 41.50 | 134.50 | 355.50 | 717.50 | 1023.00 | 1441.00 | 8536.50 | ||||||||||||
| 2003 | 1169.00 | 1129.00 | 959.50 | 719.00 | 441.00 | 264.00 | 25.50 | 97.00 | 372.00 | 554.50 | 1041.00 | 1338.00 | 8109.50 | |||||||||||||
| 2004 | 1388.50 | 1430.00 | 844.50 | 753.00 | 469.50 | 250.50 | 165.00 | 206.00 | 407.50 | 725.00 | 1020.50 | 1433.75 | a | 9093.75 | ||||||||||||
| 2005 | 927.00 | i | 1097.50 | 1033.50 | 751.50 | 467.00 | 277.50 | 80.50 | 180.50 | 306.00 | 623.50 | 972.00 | 1353.50 | 7143.00 | ||||||||||||
| 2006 | 1331.00 | 1117.00 | 1014.00 | 670.86 | a | 409.50 | 165.54 | b | 65.50 | l | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 4707.90 | |||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 1362.46 | 1097.61 | 951.49 | 672.08 | 430.38 | 189.05 | 68.55 | 113.81 | 289.20 | 588.73 | 965.99 | 1305.61 | 7995.89 | |||||||||||||
| S.D. | 144.13 | 146.58 | 104.38 | 79.36 | 68.26 | 54.21 | 35.42 | 44.69 | 55.75 | 80.84 | 113.57 | 139.94 | 468.84 | |||||||||||||
| SKEW | 0.13 | 0.16 | -0.13 | -0.14 | 0.02 | -0.12 | 0.48 | 0.37 | -0.01 | 0.35 | 0.45 | -0.11 | 0.12 | |||||||||||||
| MAX | 1680.50 | 1430.00 | 1200.00 | 810.00 | 623.50 | 282.00 | 165.00 | 220.00 | 407.50 | 775.00 | 1243.00 | 1579.00 | 9093.75 | |||||||||||||
| MIN | 1087.50 | 788.00 | 728.50 | 502.50 | 257.00 | 88.50 | 5.50 | 34.00 | 171.50 | 450.00 | 756.50 | 965.00 | 6971.50 | |||||||||||||
| NO YRS | 57 | 57 | 58 | 58 | 58 | 57 | 57 | 56 | 58 | 57 | 58 | 58 | 51 | |||||||||||||