| YEAR(S | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1959 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 259.00 | v | 625.96 | d | 244.42 | e | 11.00 | f | 0.00 | e | 870.38 | |
| 1960 | 0.00 | h | 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 | 0.00 | |
| 1961 | 0.00 | z | 0.00 | z | 0.00 | z | 127.00 | i | 548.91 | b | 707.00 | f | 412.50 | r | 0.00 | z | 343.50 | j | 249.00 | 3.00 | g | 0.00 | e | 797.91 | ||
| 1962 | 0.00 | b | 6.74 | a | 10.50 | h | 94.50 | o | 427.59 | b | 562.00 | h | 555.50 | m | 729.50 | f | 179.00 | u | 117.00 | n | 30.00 | q | 0.00 | k | 434.33 | |
| 1963 | 0.00 | a | 0.00 | e | 45.50 | j | 144.00 | f | 356.50 | m | 180.00 | u | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1964 | 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 | 0.00 | z | 0.00 | |
| 1965 | 0.00 | z | 0.00 | z | 0.00 | z | 50.50 | w | 381.00 | 613.50 | 901.00 | 846.50 | 499.50 | 179.50 | h | 30.00 | c | 0.00 | b | 3271.50 | ||||||
| 1966 | 0.00 | 0.00 | 62.00 | 126.50 | 494.50 | 550.50 | f | 1003.07 | c | 637.50 | i | 723.00 | 212.50 | 8.50 | h | 0.50 | 2622.07 | |||||||||
| 1967 | 0.00 | 5.00 | 77.50 | 145.50 | 414.50 | 350.50 | l | 983.73 | a | 911.00 | 600.00 | 286.50 | 1.50 | 0.00 | 3425.23 | |||||||||||
| 1968 | 0.00 | 1.00 | 47.00 | 94.66 | a | 431.50 | 772.00 | 924.00 | 734.00 | 577.00 | 282.50 | 0.00 | 0.00 | 3863.66 | ||||||||||||
| 1969 | 0.00 | 0.00 | 38.00 | 235.00 | 567.00 | 669.00 | 986.50 | 770.50 | f | 671.50 | 93.52 | a | 6.00 | 0.00 | 3266.52 | |||||||||||
| 1970 | 0.00 | 1.00 | 2.50 | 50.00 | 529.00 | 715.50 | 957.00 | 938.00 | 485.00 | 201.50 | 4.00 | 0.00 | 3883.50 | |||||||||||||
| 1971 | 0.00 | 0.00 | 88.35 | a | 209.00 | 384.50 | 753.00 | 998.50 | 921.73 | a | 546.92 | d | 196.00 | 0.00 | 0.00 | a | 4098.01 | |||||||||
| 1972 | 0.00 | 8.50 | 112.00 | 200.50 | 488.00 | 758.50 | 974.50 | 922.00 | 586.50 | 260.50 | 0.00 | 0.00 | 4311.00 | |||||||||||||
| 1973 | 0.00 | 0.00 | 3.00 | 116.50 | 332.00 | f | 677.59 | a | 882.50 | 915.00 | 534.00 | 275.50 | 58.00 | 0.00 | z | 3462.09 | ||||||||||
| 1974 | 0.00 | a | 0.00 | 82.50 | 139.00 | 588.50 | 875.00 | 980.00 | 1091.50 | 632.59 | a | 281.00 | 0.00 | 0.00 | 4670.09 | |||||||||||
| 1975 | 0.00 | 0.00 | 22.00 | 89.50 | 322.00 | 653.00 | 922.50 | 828.50 | 587.50 | 241.28 | a | 27.00 | 0.00 | a | 3693.28 | |||||||||||
| 1976 | 0.00 | a | 2.00 | 12.92 | a | 189.00 | 496.50 | 721.50 | 982.50 | 857.00 | 522.41 | a | 115.14 | c | 2.50 | 0.00 | 3901.47 | |||||||||
| 1977 | 0.00 | 0.00 | 18.00 | 272.50 | 370.00 | 848.50 | 953.50 | 898.00 | 650.50 | 263.50 | 25.00 | 0.00 | 4299.50 | |||||||||||||
| 1978 | 0.00 | 0.00 | 71.50 | 219.50 | 393.50 | 765.00 | 956.50 | 868.00 | 593.00 | 294.00 | 36.00 | 0.00 | 4197.00 | |||||||||||||
| 1979 | 0.00 | 0.00 | 9.50 | 210.50 | 411.00 | 684.50 | 922.50 | 809.50 | 689.00 | 316.41 | b | 1.50 | 0.00 | a | 4054.41 | |||||||||||
| 1980 | 0.00 | 3.50 | 3.00 | 160.00 | 354.50 | 726.00 | 901.58 | a | 773.50 | 489.50 | 156.03 | a | 12.41 | a | 0.00 | 3580.03 | ||||||||||
| 1981 | 0.00 | a | 0.00 | b | 13.50 | 295.00 | 385.00 | 771.72 | a | 853.50 | 837.50 | 625.00 | 195.30 | a | 15.50 | 0.00 | 3992.02 | |||||||||
| 1982 | 0.00 | 0.00 | 15.00 | 149.50 | 413.00 | 664.00 | 861.50 | 791.00 | 515.00 | 52.00 | 0.00 | 0.00 | 3461.00 | |||||||||||||
| 1983 | 0.00 | 3.00 | 28.00 | 94.00 | 362.00 | 605.50 | 880.00 | 919.00 | 666.50 | 253.50 | 61.50 | 0.00 | 3873.00 | |||||||||||||
| 1984 | 0.00 | 0.00 | z | 21.70 | a | 113.50 | 601.50 | 741.50 | 995.50 | 924.50 | 671.50 | 161.50 | 10.00 | 0.00 | 4241.20 | |||||||||||
| 1985 | 0.00 | 0.00 | 29.50 | 229.00 | 484.00 | 765.50 | 937.50 | 839.00 | 396.50 | 155.50 | 7.50 | 0.00 | 3844.00 | |||||||||||||
| 1986 | 0.00 | 0.00 | z | 35.00 | 117.78 | c | 280.50 | 591.50 | 645.00 | 430.50 | k | 217.50 | 6.50 | 0.00 | i | 0.00 | 1893.78 | |||||||||
| 1987 | 0.00 | i | 0.00 | 0.00 | z | 220.00 | 294.50 | k | 702.00 | 561.50 | k | 492.50 | k | 550.50 | 284.50 | 16.00 | i | 0.00 | l | 1757.00 | ||||||
| 1988 | 0.00 | z | 2.00 | 31.00 | 183.50 | 238.00 | o | 370.00 | o | 554.00 | m | 0.00 | z | 537.50 | 192.50 | l | 43.00 | 0.00 | k | 797.00 | ||||||
| 1989 | 0.00 | 0.00 | 99.50 | 179.00 | n | 348.00 | i | 712.50 | 610.50 | k | 620.50 | i | 244.50 | r | 161.50 | i | 4.50 | j | 0.00 | k | 812.00 | |||||
| 1990 | 0.00 | i | 5.00 | 64.00 | i | 162.00 | i | 455.50 | 608.50 | i | 477.00 | p | 890.00 | 384.50 | l | 208.00 | 9.00 | h | 0.00 | l | 1558.50 | |||||
| 1991 | 0.00 | j | 0.00 | i | 3.00 | n | 124.50 | 287.50 | j | 465.50 | j | 661.00 | i | 903.00 | 408.50 | j | 247.00 | i | 6.50 | j | 0.00 | j | 1027.50 | |||
| 1992 | 0.00 | j | 0.00 | j | 16.50 | j | 214.00 | i | 319.00 | k | 666.50 | 496.00 | m | 571.50 | j | 410.00 | j | 218.50 | i | 0.00 | 0.00 | j | 666.50 | |||
| 1993 | 0.00 | k | 0.00 | 47.50 | 175.00 | 318.50 | k | 667.76 | a | 601.00 | k | 559.00 | j | 398.00 | i | 164.00 | j | 5.89 | b | 0.00 | i | 896.15 | ||||
| 1994 | 0.00 | l | 1.50 | i | 53.50 | 151.00 | j | 310.00 | k | 608.00 | i | 593.00 | m | 1000.50 | 445.00 | i | 93.50 | m | 13.00 | l | 0.00 | j | 1054.00 | |||
| 1995 | 0.00 | i | 13.00 | 54.50 | 82.00 | j | 240.50 | i | 644.50 | 585.00 | k | 966.00 | 429.00 | j | 158.50 | i | 14.00 | k | 1.00 | m | 1678.00 | |||||
| 1996 | 0.00 | i | 19.00 | 27.50 | k | 0.00 | z | 589.50 | 0.00 | z | 571.00 | n | 650.00 | j | 359.50 | j | 275.00 | 3.50 | n | 0.00 | m | 883.50 | ||||
| 1997 | 0.00 | j | 0.00 | 45.50 | j | 121.55 | a | 299.50 | m | 478.50 | k | 0.00 | z | 513.50 | l | 463.00 | i | 244.26 | b | 1.50 | m | 0.00 | k | 365.81 | ||
| 1998 | 0.00 | q | 0.00 | i | 0.00 | z | 81.50 | o | 258.50 | l | 667.00 | 680.00 | j | 611.00 | k | 350.50 | p | 162.00 | j | 6.00 | k | 0.00 | l | 667.00 | ||
| 1999 | 0.00 | k | 0.50 | k | 54.00 | j | 111.00 | j | 196.00 | o | 495.00 | j | 652.50 | j | 590.00 | i | 357.00 | k | 172.00 | k | 12.00 | k | 0.00 | m | 0.00 | |
| 2000 | 0.00 | p | 0.00 | j | 19.50 | k | 174.50 | l | 426.00 | j | 598.50 | i | 632.50 | l | 698.50 | j | 440.50 | k | 174.50 | j | 0.00 | o | 0.00 | o | 0.00 | |
| 2001 | 0.00 | j | 4.00 | i | 35.50 | m | 143.00 | m | 392.50 | k | 487.50 | l | 648.50 | k | 674.50 | h | 393.50 | n | 219.00 | j | 54.50 | n | 0.00 | p | 0.00 | |
| 2002 | 0.00 | n | 0.00 | n | 31.00 | m | 355.00 | 378.00 | i | 550.50 | k | 682.00 | l | 594.00 | k | 391.00 | l | 71.00 | s | 0.00 | y | 0.00 | u | 355.00 | ||
| 2003 | 0.00 | w | 0.00 | n | 26.50 | o | 123.00 | j | 332.00 | l | 483.50 | l | 785.00 | i | 639.00 | l | 392.00 | k | 297.50 | h | 1.50 | q | 0.00 | m | 0.00 | |
| 2004 | 0.00 | k | 0.00 | l | 119.50 | h | 175.50 | h | 383.00 | k | 575.00 | h | 676.00 | j | 671.00 | i | 405.00 | j | 175.50 | i | 1.50 | i | 0.00 | k | 0.00 | |
| 2005 | 1.00 | j | 0.00 | g | 26.00 | i | 151.00 | i | 380.50 | i | 550.00 | h | 654.00 | l | 660.00 | h | 449.50 | i | 185.00 | j | 34.50 | j | 0.00 | l | 0.00 | |
| 2006 | 0.00 | j | 6.50 | i | 27.00 | h | 169.00 | k | 409.00 | k | 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 | 0.00 | 2.40 | 41.48 | 171.70 | 446.94 | 708.94 | 927.40 | 886.29 | 567.76 | 215.01 | 15.10 | 0.02 | 3981.46 | |||||||||||||
| S.D. | 0.00 | 4.48 | 31.52 | 69.92 | 88.43 | 68.89 | 78.03 | 77.67 | 105.59 | 77.89 | 19.01 | 0.10 | 307.65 | |||||||||||||
| SKEW | 0.00 | 2.37 | 0.65 | 0.65 | 0.22 | 0.49 | -2.20 | 0.42 | -1.43 | -1.09 | 1.25 | 4.48 | 0.43 | |||||||||||||
| MAX | 0.00 | 19.00 | 112.00 | 355.00 | 601.50 | 875.00 | 1003.07 | 1091.50 | 723.00 | 316.41 | 61.50 | 0.50 | 4670.09 | |||||||||||||
| MIN | 0.00 | 0.00 | 2.50 | 50.00 | 280.50 | 591.50 | 645.00 | 734.00 | 217.50 | 6.50 | 0.00 | 0.00 | 3461.00 | |||||||||||||
| NO YRS | 24 | 29 | 26 | 27 | 25 | 26 | 22 | 23 | 25 | 27 | 23 | 23 | 15 | |||||||||||||