| YEAR(S | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1960 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 514.00 | 134.00 | 63.00 | 124.50 | 119.50 | 391.50 | 693.00 | 0.00 | z | 2039.50 | ||||||||
| 1961 | 961.00 | 803.50 | 1036.00 | 696.00 | 545.50 | 120.50 | 35.50 | 98.00 | 89.50 | s | 313.50 | i | 799.66 | a | 1108.50 | 6204.16 | ||||||||||
| 1962 | 1173.00 | 1024.92 | d | 1085.50 | 344.00 | n | 0.00 | z | 231.96 | b | 84.98 | b | 91.45 | a | 254.50 | 497.03 | a | 799.00 | 991.47 | b | 6233.81 | |||||
| 1963 | 1131.50 | 735.50 | 1000.50 | 893.79 | a | 461.00 | 395.00 | 84.73 | a | 113.84 | b | 208.85 | d | 453.52 | d | 847.76 | a | 1037.00 | 7362.99 | |||||||
| 1964 | 1115.48 | a | 1051.25 | a | 1030.00 | 804.00 | 560.07 | a | 286.50 | 32.55 | a | 80.60 | a | 340.38 | d | 426.52 | b | 1043.00 | 1098.36 | b | 7868.71 | |||||
| 1965 | 1055.07 | b | 933.50 | 960.48 | a | 780.00 | 653.07 | a | 348.75 | b | 92.00 | 132.02 | b | 442.50 | 474.50 | 860.00 | 1229.00 | 7960.89 | ||||||||
| 1966 | 1283.50 | 1108.00 | 861.50 | 625.00 | 338.00 | 209.00 | 79.00 | 63.00 | 279.00 | 588.00 | 862.50 | 1112.00 | 7408.50 | |||||||||||||
| 1967 | 1067.00 | 938.00 | 923.50 | 1039.00 | 503.15 | e | 331.03 | a | 35.00 | 38.23 | a | 269.48 | a | 518.73 | a | 805.71 | b | 206.00 | z | 6468.85 | ||||||
| 1968 | 340.00 | v | 846.00 | 928.00 | 804.23 | d | 539.50 | 181.11 | c | 31.52 | a | 206.00 | 311.50 | 575.00 | 916.00 | 1222.43 | a | 6561.29 | ||||||||
| 1969 | 829.00 | g | 269.50 | v | 264.50 | v | 165.00 | w | 375.10 | a | 291.00 | 49.00 | 23.50 | 212.50 | 776.00 | 942.50 | 1126.50 | 3796.10 | ||||||||
| 1970 | 1160.71 | e | 894.00 | 990.50 | 560.00 | l | 476.92 | e | 199.00 | g | 47.69 | e | 9.62 | b | 319.50 | 672.50 | 858.00 | e | 1318.05 | c | 6747.50 | |||||
| 1971 | 1099.00 | 952.50 | 920.50 | 707.00 | 631.50 | 202.00 | 12.50 | 27.79 | b | 338.00 | 786.76 | b | 979.82 | b | 1064.00 | g | 6657.37 | |||||||||
| 1972 | 1263.77 | a | 938.88 | a | 711.40 | b | 735.00 | c | 456.70 | c | 172.78 | c | 28.23 | c | 129.88 | b | 384.11 | b | 760.61 | c | 1048.27 | d | 1250.52 | c | 7880.12 | |
| 1973 | 965.50 | i | 1117.20 | c | 1105.27 | e | 567.50 | f | 367.87 | a | 187.50 | d | 41.13 | e | 99.09 | c | 298.33 | c | 498.00 | f | 610.00 | m | 1072.00 | 4288.39 | ||
| 1974 | 1296.83 | a | 972.50 | 634.00 | h | 768.33 | c | 336.00 | f | 114.81 | d | 45.95 | c | 113.48 | c | 133.50 | i | 504.00 | g | 895.56 | c | 0.00 | z | 4207.46 | ||
| 1975 | 0.00 | z | 0.00 | z | 568.00 | p | 988.27 | d | 366.00 | k | 0.00 | z | 0.00 | z | 39.50 | u | 200.56 | c | 679.13 | d | 640.50 | h | 0.00 | z | 1867.95 | |
| 1976 | 469.00 | o | 1034.33 | e | 707.00 | h | 794.50 | 359.94 | d | 244.50 | 57.19 | b | 55.50 | w | 286.11 | c | 514.00 | f | 776.54 | d | 1103.27 | c | 4656.39 | |||
| 1977 | 1208.50 | 883.62 | b | 1093.02 | b | 656.25 | b | 655.00 | 123.00 | 36.88 | b | 49.37 | d | 227.68 | b | 500.43 | c | 776.90 | a | 1025.98 | e | 7236.62 | ||||
| 1978 | 1173.19 | b | 704.00 | h | 640.00 | f | 313.00 | r | 566.04 | d | 256.80 | e | 61.00 | g | 138.43 | b | 395.17 | a | 444.91 | d | 1062.32 | b | 1252.00 | 5288.86 | ||
| 1979 | 1285.35 | d | 1010.92 | d | 947.50 | 721.03 | a | 413.13 | e | 209.40 | e | 28.00 | k | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 1043.67 | a | 5631.00 | ||
| 1980 | 714.00 | j | 704.00 | f | 783.50 | h | 510.00 | g | 487.50 | f | 94.00 | u | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 1162.42 | 952.79 | 970.98 | 786.60 | 495.09 | 224.42 | 50.40 | 90.52 | 287.51 | 569.68 | 880.38 | 1132.72 | 7619.64 | |||||||||||||
| S.D. | 99.56 | 105.31 | 104.40 | 118.17 | 102.02 | 81.84 | 23.03 | 50.94 | 80.88 | 134.19 | 106.24 | 98.20 | 317.33 | |||||||||||||
| SKEW | -0.28 | -0.30 | -0.90 | 0.84 | 0.04 | 0.46 | 0.48 | 0.26 | -0.04 | 0.45 | 0.32 | 0.42 | -0.08 | |||||||||||||
| MAX | 1296.83 | 1117.20 | 1105.27 | 1039.00 | 655.00 | 395.00 | 92.00 | 206.00 | 442.50 | 786.76 | 1062.32 | 1318.05 | 7960.89 | |||||||||||||
| MIN | 961.00 | 735.50 | 711.40 | 625.00 | 338.00 | 114.81 | 12.50 | 9.62 | 119.50 | 391.50 | 693.00 | 991.47 | 7236.62 | |||||||||||||
| NO YRS | 14 | 16 | 14 | 14 | 17 | 18 | 17 | 17 | 17 | 15 | 17 | 15 | 6 | |||||||||||||