| YEAR(S | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1952 | 0.00 | z | 0.00 | z | 0.00 | z | 467.50 | 230.43 | a | 52.50 | 1.03 | a | 0.00 | a | 69.50 | 354.00 | 921.72 | a | 1054.00 | c | 3150.69 | |||||
| 1953 | 858.38 | b | 682.50 | f | 482.00 | g | 366.00 | e | 306.00 | f | 70.56 | c | 0.00 | a | 1.66 | c | 71.79 | b | 420.10 | b | 661.50 | 1225.00 | 3674.98 | |||
| 1954 | 1033.33 | a | 843.50 | 807.07 | b | 379.29 | b | 183.00 | 129.50 | 4.50 | 26.35 | a | 122.00 | 442.27 | a | 720.00 | 1069.00 | 5759.80 | ||||||||
| 1955 | 1431.00 | 1275.04 | a | 948.17 | b | 552.41 | a | 253.00 | 99.00 | 10.50 | 0.52 | a | 138.50 | i | 155.50 | s | 919.82 | b | 911.29 | b | 6400.75 | |||||
| 1956 | 838.03 | a | 1151.71 | a | 763.38 | c | 348.50 | h | 218.00 | 43.00 | 2.00 | 18.08 | a | 118.00 | 372.50 | f | 927.00 | 1087.14 | b | 5166.34 | ||||||
| 1957 | 1245.37 | e | 735.50 | 718.54 | c | 0.00 | z | 341.00 | a | 79.00 | 0.00 | a | 0.00 | 165.00 | 425.45 | b | 939.00 | 972.07 | c | 5620.92 | ||||||
| 1958 | 1108.00 | 745.00 | 822.00 | 563.00 | 175.50 | 28.50 | 1.07 | b | 0.00 | 143.50 | 397.00 | 870.00 | 944.00 | 5797.57 | ||||||||||||
| 1959 | 990.50 | 850.50 | 451.00 | l | 449.00 | 279.50 | g | 10.50 | j | 0.00 | z | 0.00 | z | 164.00 | h | 304.50 | k | 503.50 | k | 824.50 | h | 2290.00 | ||||
| 1960 | 771.50 | k | 1053.00 | 721.50 | 457.50 | 291.50 | 26.50 | 0.00 | 45.50 | h | 73.50 | 442.30 | c | 697.00 | 1077.50 | 4840.30 | ||||||||||
| 1961 | 1089.00 | 813.50 | 742.00 | 512.68 | b | 230.00 | 33.50 | 0.00 | b | 0.55 | c | 253.50 | 532.54 | c | 913.00 | 1207.85 | d | 6328.12 | ||||||||
| 1962 | 1371.48 | b | 935.93 | a | 879.37 | a | 405.60 | e | 0.00 | z | 62.50 | l | 0.00 | a | 13.00 | 88.93 | b | 407.13 | a | 0.00 | z | 866.00 | f | 4101.44 | ||
| 1963 | 1320.50 | 773.92 | c | 856.38 | c | 633.00 | 174.12 | a | 121.00 | 0.00 | b | 0.00 | 36.00 | e | 0.00 | z | 751.67 | c | 1223.00 | 5889.58 | ||||||
| 1964 | 1397.00 | 0.00 | z | 1036.95 | a | 533.00 | 0.00 | z | 0.00 | z | 0.00 | 49.82 | c | 162.00 | 395.50 | 848.50 | 1001.00 | 5423.77 | ||||||||
| 1965 | 1034.88 | a | 868.00 | 864.38 | a | 442.00 | 328.50 | 86.00 | 0.00 | 15.50 | 262.50 | 376.28 | b | 582.50 | 980.63 | a | 5841.18 | |||||||||
| 1966 | 1091.72 | a | 973.50 | 736.00 | 504.00 | 179.50 | 62.50 | 0.50 | 11.00 | 83.28 | a | 503.75 | a | 697.00 | 1145.00 | 5987.74 | ||||||||||
| 1967 | 1194.00 | 898.00 | 661.00 | 575.00 | 348.50 | 118.45 | a | 0.00 | 0.00 | 97.50 | 439.50 | 711.00 | 1276.50 | 6319.45 | ||||||||||||
| 1968 | 1324.50 | 822.36 | a | 660.50 | 598.00 | 313.10 | a | 60.54 | b | 6.20 | a | 64.07 | a | 213.62 | a | 466.55 | a | 838.85 | d | 1167.67 | d | 6535.94 | ||||
| 1969 | 959.97 | a | 857.00 | 858.04 | c | 462.78 | c | 90.23 | c | 87.00 | 5.00 | 0.00 | a | 37.78 | c | 612.50 | 831.72 | a | 1122.64 | c | 5924.66 | |||||
| 1970 | 1144.42 | a | 742.50 | 830.50 | 618.46 | d | 252.50 | 92.00 | 0.00 | d | 0.00 | 248.28 | a | 600.00 | 717.50 | 1122.00 | 6368.15 | |||||||||
| 1971 | 1138.00 | 863.33 | a | 731.94 | d | 497.00 | 298.00 | 76.50 | 0.00 | a | 0.00 | a | 264.11 | b | 579.38 | b | 851.25 | b | 985.00 | g | 5299.51 | |||||
| 1972 | 595.50 | n | 643.00 | g | 579.59 | c | 521.40 | e | 194.86 | c | 6.43 | b | 0.00 | e | 0.00 | i | 153.62 | a | 432.93 | b | 0.00 | z | 1317.50 | b | 3206.33 | |
| 1973 | 1088.00 | g | 925.04 | a | 813.50 | 611.38 | a | 261.50 | 110.00 | f | 1.50 | s | 4.13 | a | 167.88 | d | 403.52 | a | 763.85 | d | 1015.85 | e | 4966.64 | |||
| 1974 | 905.00 | h | 957.38 | b | 625.37 | e | 357.50 | g | 198.50 | 43.00 | 0.00 | a | 11.00 | 122.59 | a | 398.87 | a | 737.14 | b | 1147.50 | 4241.35 | |||||
| 1975 | 1342.00 | 889.26 | a | 773.97 | a | 660.00 | 360.12 | a | 122.14 | b | 1.55 | a | 11.00 | 126.72 | a | 484.52 | d | 885.00 | 1153.20 | a | 6809.48 | |||||
| 1976 | 1362.00 | 992.00 | 948.50 | 538.00 | 237.09 | d | 0.00 | z | 0.00 | l | 0.00 | z | 53.50 | u | 552.46 | c | 578.00 | g | 618.00 | n | 4630.06 | |||||
| 1977 | 908.50 | i | 361.50 | t | 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 | |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 1163.70 | 903.14 | 789.94 | 515.77 | 245.66 | 71.88 | 1.47 | 10.79 | 140.07 | 460.31 | 799.29 | 1105.73 | 6167.21 | |||||||||||||
| S.D. | 180.27 | 134.46 | 111.55 | 81.95 | 70.00 | 35.56 | 2.72 | 17.25 | 71.30 | 75.54 | 103.30 | 110.46 | 355.57 | |||||||||||||
| SKEW | -0.18 | 1.15 | 0.20 | -0.08 | -0.10 | 0.00 | 2.11 | 2.01 | 0.45 | 0.73 | -0.27 | 0.05 | 0.41 | |||||||||||||
| MAX | 1431.00 | 1275.04 | 1036.95 | 660.00 | 360.12 | 129.50 | 10.50 | 64.07 | 264.11 | 612.50 | 939.00 | 1317.50 | 6809.48 | |||||||||||||
| MIN | 838.03 | 735.50 | 579.59 | 366.00 | 90.23 | 6.43 | 0.00 | 0.00 | 36.00 | 354.00 | 582.50 | 911.29 | 5759.80 | |||||||||||||
| NO YRS | 20 | 21 | 22 | 22 | 21 | 20 | 22 | 21 | 22 | 21 | 21 | 21 | 10 | |||||||||||||