| YEAR(S | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1977 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 1276.00 | 1276.00 | ||
| 1978 | 1331.00 | 1166.00 | 1030.50 | 934.00 | 772.50 | 431.67 | c | 209.50 | 309.50 | 508.00 | 714.50 | 1196.00 | 1626.50 | 10229.67 | ||||||||||||
| 1979 | 1647.50 | 1221.50 | 1227.00 | 984.00 | 695.00 | 403.50 | 220.62 | a | 271.50 | 329.00 | 742.50 | 1309.00 | 1254.50 | 10305.62 | ||||||||||||
| 1980 | 1403.50 | 1141.00 | 1347.00 | 983.00 | 747.00 | 374.00 | 179.50 | 279.50 | 449.00 | 810.00 | 1048.50 | 1093.78 | a | 9855.78 | ||||||||||||
| 1981 | 1187.82 | a | 1160.00 | 1194.00 | 819.50 | 745.50 | 361.50 | 189.50 | 205.00 | 391.00 | 900.00 | 1018.00 | 1294.00 | 9465.82 | ||||||||||||
| 1982 | 1482.00 | 1264.00 | 1262.50 | 1098.00 | 753.50 | 484.50 | 268.50 | 179.00 | 517.00 | 939.00 | 1251.00 | 1404.00 | 10903.00 | |||||||||||||
| 1983 | 1265.00 | 1224.00 | 1168.50 | 1149.50 | 833.00 | 471.00 | 272.00 | 212.00 | 436.00 | 736.50 | 1183.00 | 1479.00 | 10429.50 | |||||||||||||
| 1984 | 1457.00 | 1301.00 | 1287.00 | 1068.50 | 671.00 | 490.00 | 218.00 | 249.00 | 510.00 | 1039.50 | 1170.50 | 1415.50 | 10877.00 | |||||||||||||
| 1985 | 1527.00 | 1383.00 | 1286.50 | 843.00 | 609.00 | 390.00 | 166.50 | 255.00 | 602.50 | 827.00 | 1283.50 | 1332.00 | 10505.00 | |||||||||||||
| 1986 | 1153.00 | 1148.50 | 1018.00 | 922.00 | 695.50 | 309.00 | 292.00 | 190.50 | 638.50 | 859.00 | 1114.50 | 1373.50 | 9714.00 | |||||||||||||
| 1987 | 1446.00 | 1217.50 | 1280.00 | 766.00 | 611.50 | 384.50 | 286.50 | 322.50 | 467.50 | 703.00 | 1171.00 | 1480.50 | 10136.50 | |||||||||||||
| 1988 | 1503.50 | 1274.00 | 1317.50 | 879.00 | 678.00 | 262.50 | 149.00 | 259.00 | 513.00 | 653.50 | 1196.50 | 1454.50 | 10140.00 | |||||||||||||
| 1989 | 1460.00 | 1337.50 | 1052.00 | 826.00 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 4675.50 | |||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 1405.28 | 1236.50 | 1205.88 | 939.38 | 710.14 | 396.56 | 222.87 | 248.41 | 487.41 | 811.32 | 1176.50 | 1373.65 | 10232.90 | |||||||||||||
| S.D. | 145.38 | 77.70 | 115.16 | 120.77 | 68.15 | 71.31 | 50.16 | 47.18 | 88.00 | 116.23 | 89.89 | 136.78 | 447.18 | |||||||||||||
| SKEW | -0.36 | 0.44 | -0.61 | 0.33 | 0.06 | -0.34 | 0.08 | 0.02 | -0.01 | 0.53 | -0.34 | -0.22 | -0.06 | |||||||||||||
| MAX | 1647.50 | 1383.00 | 1347.00 | 1149.50 | 833.00 | 490.00 | 292.00 | 322.50 | 638.50 | 1039.50 | 1309.00 | 1626.50 | 10903.00 | |||||||||||||
| MIN | 1153.00 | 1141.00 | 1018.00 | 766.00 | 609.00 | 262.50 | 149.00 | 179.00 | 329.00 | 653.50 | 1018.00 | 1093.78 | 9465.82 | |||||||||||||
| NO YRS | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 11 | |||||||||||||