| YEAR(S | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1923 | 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 | |
| 1924 | 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 | |
| 1925 | 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 | |
| 1926 | 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 | |
| 1927 | 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 | 129.68 | a | 0.00 | z | 0.00 | z | 129.68 | |
| 1928 | 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 | |
| 1929 | 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 | |
| 1930 | 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 | |
| 1931 | 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 | |
| 1932 | 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 | |
| 1933 | 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 | |
| 1934 | 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 | |
| 1935 | 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 | |
| 1936 | 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 | |
| 1937 | 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 | |
| 1938 | 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 | |
| 1939 | 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 | |
| 1940 | 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 | |
| 1941 | 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 | |
| 1942 | 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 | |
| 1943 | 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 | |
| 1944 | 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 | |
| 1945 | 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 | |
| 1946 | 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 | |
| 1947 | 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 | |
| 1948 | 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 | |
| 1949 | 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 | |
| 1950 | 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 | |
| 1951 | 0.00 | z | 0.00 | z | 0.00 | z | 59.42 | d | 219.00 | 367.00 | 712.00 | 607.00 | 336.00 | 77.50 | 1.00 | 0.00 | 2378.92 | |||||||||
| 1952 | 0.00 | 0.00 | 2.50 | 47.50 | 266.50 | 459.50 | 655.50 | 680.00 | 418.50 | 122.50 | 2.50 | 0.00 | 2655.00 | |||||||||||||
| 1953 | 0.00 | 0.00 | 10.00 | 41.50 | 105.63 | d | 446.50 | 727.00 | 648.00 | 416.50 | 89.00 | 11.50 | 0.00 | 2495.63 | ||||||||||||
| 1954 | 0.00 | 0.00 | 14.50 | 124.50 | 348.00 | 442.50 | 787.50 | 633.50 | 436.00 | 178.00 | 10.50 | 0.00 | 2975.00 | |||||||||||||
| 1955 | 0.00 | 0.00 | 0.00 | 67.00 | 181.50 | 420.00 | 703.00 | 701.50 | 394.00 | 115.50 | 0.00 | 9.00 | 2591.50 | |||||||||||||
| 1956 | 2.00 | 0.00 | 32.00 | 61.50 | 282.62 | a | 550.00 | 679.00 | 566.50 | 424.50 | 122.50 | 0.00 | 0.00 | 2720.62 | ||||||||||||
| 1957 | 0.00 | 0.50 | 8.00 | 39.23 | d | 155.50 | 454.00 | 704.00 | 675.00 | 310.50 | 71.50 | 0.00 | 0.00 | 2418.23 | ||||||||||||
| 1958 | 0.00 | 0.00 | 0.00 | a | 25.50 | 349.50 | 553.00 | 671.50 | 705.00 | 410.50 | 137.50 | 11.50 | 0.00 | 2864.00 | ||||||||||||
| 1959 | 0.00 | 0.00 | 5.00 | 125.00 | 183.00 | 600.00 | 761.50 | 678.00 | 333.50 | 72.00 | 0.00 | 0.00 | 2758.00 | |||||||||||||
| 1960 | 0.00 | 0.00 | 10.50 | 108.00 | 232.00 | 522.50 | 730.50 | 585.00 | 380.00 | 62.00 | 2.50 | 0.00 | 2633.00 | |||||||||||||
| 1961 | 0.00 | 2.50 | 0.00 | a | 38.00 | 217.00 | 549.00 | 749.50 | 690.50 | 251.50 | 62.50 | 0.00 | 0.00 | 2560.50 | ||||||||||||
| 1962 | 0.00 | 6.50 | 3.50 | 95.00 | 174.50 | 425.00 | 653.00 | 603.50 | 401.00 | 132.00 | 1.50 | 0.00 | 2495.50 | |||||||||||||
| 1963 | 0.00 | 3.00 | 2.50 | 41.00 | 344.50 | 385.00 | 764.50 | 711.50 | 477.50 | 211.00 | 0.00 | 0.00 | 2940.50 | |||||||||||||
| 1964 | 0.00 | 0.00 | 2.00 | 40.00 | 249.00 | 437.50 | 785.85 | a | 643.50 | 337.50 | 169.00 | 0.00 | a | 1.50 | 2665.85 | |||||||||||
| 1965 | 0.00 | 0.00 | 1.50 | 98.00 | 167.00 | 347.50 | 661.33 | a | 592.50 | 278.00 | 128.00 | 12.50 | 0.00 | 2286.33 | ||||||||||||
| 1966 | 0.00 | 0.00 | 22.00 | 67.50 | 356.00 | 524.00 | 800.00 | 684.00 | 431.00 | 63.50 | 17.50 | 0.00 | 2965.50 | |||||||||||||
| 1967 | 0.00 | 0.00 | 22.00 | 24.00 | 211.00 | 359.50 | 759.50 | 734.00 | 406.00 | 117.50 | 7.00 | 0.00 | 2640.50 | |||||||||||||
| 1968 | 0.00 | 0.00 | 9.00 | 17.50 | 180.50 | 521.00 | 716.00 | 488.00 | 287.00 | 92.50 | 6.50 | 0.00 | a | 2318.00 | ||||||||||||
| 1969 | 0.00 | 0.00 | 7.50 | 59.50 | 391.50 | 381.50 | 753.50 | 795.00 | 446.50 | 37.00 | 1.50 | 0.00 | 2873.50 | |||||||||||||
| 1970 | 0.00 | 0.00 | 0.00 | 16.00 | 255.50 | 447.50 | 729.50 | 707.50 | 291.50 | 62.00 | 10.50 | 0.00 | 2520.00 | |||||||||||||
| 1971 | 0.00 | 0.00 | 28.50 | 41.00 | 174.00 | 508.50 | 788.00 | 714.50 | 287.50 | 78.50 | 0.50 | 0.00 | 2621.00 | |||||||||||||
| 1972 | 0.00 | 10.00 | 30.00 | 65.50 | 252.13 | a | 516.00 | 760.50 | 604.00 | 329.00 | 108.50 | 0.00 | 0.00 | 2675.63 | ||||||||||||
| 1973 | 0.00 | 0.00 | 0.00 | 12.50 | 260.00 | 481.00 | 701.00 | 673.50 | 269.50 | 100.50 | 13.50 | 0.50 | 2512.00 | |||||||||||||
| 1974 | 0.00 | 0.00 | 14.50 | 50.00 | 308.00 | 577.50 | 738.50 | 620.00 | 375.00 | 81.12 | a | 0.00 | 0.00 | 2764.62 | ||||||||||||
| 1975 | 2.00 | 0.00 | 2.50 | 13.00 | 137.00 | 380.00 | 764.50 | 649.50 | 361.00 | 105.50 | 0.00 | 0.00 | 2415.00 | |||||||||||||
| 1976 | 0.00 | 4.00 | 4.81 | b | 40.00 | 325.50 | 478.00 | 771.50 | 613.00 | 395.50 | 60.00 | 0.00 | 0.00 | 2692.31 | ||||||||||||
| 1977 | 0.00 | 0.00 | 3.00 | 160.00 | 170.00 | 665.50 | 791.50 | 732.00 | 454.50 | 142.50 | 20.00 | 0.00 | 3139.00 | |||||||||||||
| 1978 | 0.00 | 0.00 | b | 24.50 | 46.50 | 193.00 | 497.50 | 763.50 | 635.50 | 381.50 | 129.00 | 1.50 | 0.00 | 2672.50 | ||||||||||||
| 1979 | 0.00 | 0.00 | 0.00 | g | 51.00 | 261.00 | 474.00 | 705.50 | 628.00 | 499.00 | 200.00 | 0.00 | 0.00 | 2818.50 | ||||||||||||
| 1980 | 0.00 | 0.00 | 0.00 | 79.00 | 136.50 | 444.31 | a | 719.00 | 613.00 | 340.00 | 90.50 | 13.00 | 0.50 | 2435.81 | ||||||||||||
| 1981 | 0.00 | 2.50 | 0.00 | 114.50 | 185.50 | 543.50 | 753.00 | 654.50 | 442.50 | 76.50 | 16.50 | 3.00 | 2792.00 | |||||||||||||
| 1982 | 0.00 | 0.00 | 0.00 | 52.00 | 172.00 | 384.50 | 625.50 | 671.50 | 346.00 | 18.50 | 0.00 | 0.00 | 2270.00 | |||||||||||||
| 1983 | 0.00 | 0.00 | 3.00 | 10.00 | 142.00 | 418.00 | 644.00 | 649.50 | 415.00 | 75.50 | 12.50 | 0.00 | 2369.50 | |||||||||||||
| 1984 | 0.00 | 0.00 | 0.00 | 32.50 | 295.50 | 390.50 | 646.00 | 634.00 | 384.00 | 45.00 | 1.03 | a | 0.00 | 2428.53 | ||||||||||||
| 1985 | 0.00 | 0.00 | 4.50 | 70.00 | 253.00 | 503.50 | 691.00 | 613.00 | 267.00 | 54.00 | 0.50 | 0.00 | 2456.50 | |||||||||||||
| 1986 | 0.00 | 10.00 | 31.00 | 43.50 | 206.00 | 552.00 | 628.50 | 658.50 | 230.00 | 27.00 | 0.00 | 0.00 | 2386.50 | |||||||||||||
| 1987 | 0.00 | 0.00 | 0.00 | 101.00 | 235.00 | 503.00 | 603.00 | 559.50 | 288.00 | 97.00 | 4.50 | 0.00 | 2391.00 | |||||||||||||
| 1988 | 0.00 | 0.00 | 4.00 | 64.00 | 202.00 | 585.00 | 709.50 | 617.00 | 295.00 | 147.00 | 22.00 | 0.00 | 2645.50 | |||||||||||||
| 1989 | 0.00 | 0.00 | 36.50 | 117.50 | 218.00 | 420.00 | 725.00 | 586.00 | 336.50 | 82.00 | 0.00 | 0.00 | 2521.50 | |||||||||||||
| 1990 | 0.00 | 0.00 | 0.00 | z | 77.50 | 219.00 | 524.00 | 709.50 | 591.50 | 464.00 | 97.50 | 1.50 | 0.00 | 2684.50 | ||||||||||||
| 1991 | 0.00 | 0.00 | 4.50 | 35.50 | 142.00 | 434.50 | 677.50 | 655.00 | 308.50 | 102.50 | 0.00 | z | 0.00 | 2360.00 | ||||||||||||
| 1992 | 0.00 | z | 0.00 | 2.50 | 149.50 | 302.50 | 451.00 | 583.50 | 625.50 | 363.50 | 114.00 | 0.00 | 0.00 | 2592.00 | ||||||||||||
| 1993 | 0.00 | 0.00 | 7.00 | 49.50 | 284.50 | 352.50 | 545.00 | 570.50 | 277.50 | 62.50 | 0.00 | 0.00 | 2149.00 | |||||||||||||
| 1994 | 0.00 | 0.00 | 5.00 | 101.50 | 299.00 | 543.62 | a | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 949.12 | ||||||
| 1995 | 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 | |
| 1996 | 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 | |
| 1997 | 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 | |
| 1998 | 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 | |
| 1999 | 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 | |
| 2000 | 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 | |
| 2001 | 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 | |
| 2002 | 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 | |
| 2003 | 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 | |
| 2004 | 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 | |
| 2005 | 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 | |
| 2006 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 736.00 | 583.50 | 221.00 | 76.00 | 7.00 | 0.00 | 1623.50 | |||||||
| 2007 | 0.00 | 0.00 | 19.00 | 96.50 | 233.00 | g | 551.00 | 617.50 | g | 739.50 | 397.50 | 86.50 | 6.50 | 0.00 | 1896.50 | |||||||||||
| 2008 | 0.00 | 0.00 | 4.50 | 58.00 | 164.50 | 479.50 | 752.50 | 683.00 | 358.00 | 130.00 | 8.50 | 0.00 | 2638.50 | |||||||||||||
| 2009 | 0.00 | 0.00 | 21.50 | 64.50 | 304.00 | 412.00 | 730.00 | 603.00 | 480.58 | d | 62.00 | 13.00 | 0.00 | b | 2690.58 | |||||||||||
| 2010 | 0.00 | 0.00 | 12.00 | 49.00 | 133.50 | 505.00 | 732.50 | 655.00 | 418.80 | e | 108.50 | 5.50 | 0.00 | 2619.80 | ||||||||||||
| 2011 | 0.00 | e | 0.00 | 7.00 | i | 21.50 | 117.28 | a | 427.00 | 674.00 | 258.50 | t | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 1239.78 | |||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 0.09 | 0.81 | 9.23 | 62.49 | 228.38 | 473.37 | 711.95 | 645.05 | 363.61 | 98.18 | 5.19 | 0.30 | 2601.56 | |||||||||||||
| S.D. | 0.41 | 2.30 | 10.47 | 36.21 | 71.33 | 72.33 | 57.32 | 56.38 | 70.42 | 41.18 | 6.33 | 1.37 | 211.62 | |||||||||||||
| SKEW | 4.53 | 3.13 | 1.16 | 0.80 | 0.35 | 0.24 | -0.78 | 0.05 | -0.12 | 0.62 | 1.00 | 5.66 | 0.29 | |||||||||||||
| MAX | 2.00 | 10.00 | 36.50 | 160.00 | 391.50 | 665.50 | 800.00 | 795.00 | 499.00 | 211.00 | 22.00 | 9.00 | 3139.00 | |||||||||||||
| MIN | 0.00 | 0.00 | 0.00 | 10.00 | 105.63 | 347.50 | 545.00 | 488.00 | 221.00 | 18.50 | 0.00 | 0.00 | 2149.00 | |||||||||||||
| NO YRS | 47 | 48 | 45 | 49 | 48 | 49 | 48 | 48 | 48 | 49 | 47 | 48 | 41 | |||||||||||||