YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1906 | ----- | z | 10.96 | 18.58 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 14.77 | j | ||
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | 50.90 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.90 | k | |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | 20.92 | 38.98 | 46.23 | 57.08 | 66.26 | 66.47 | 57.45 | 48.65 | 32.90 | 15.23 | 45.02 | b | ||||||||||
1961 | 11.76 | 23.48 | 31.63 | 36.62 | 47.77 | 60.92 | 66.11 | 69.40 | 57.37 | 48.89 | 32.95 | 18.74 | 42.14 | |||||||||||||
1962 | 7.27 | 10.96 | 26.84 | 37.08 | 46.55 | 54.28 | 62.74 | 64.63 | 57.38 | 49.18 | 36.88 | 18.52 | 39.36 | |||||||||||||
1963 | 4.44 | 11.12 | 29.08 | 38.90 | 46.84 | 57.98 | a | 67.84 | 66.35 | a | 60.32 | 57.18 | 38.02 | 12.29 | 40.86 | |||||||||||
1964 | 19.68 | 20.84 | 23.42 | 38.18 | 53.66 | 56.42 | 67.05 | 61.81 | 55.48 | 47.39 | 32.70 | 13.87 | 40.87 | |||||||||||||
1965 | 8.92 | 8.95 | 20.82 | 37.87 | 47.15 | 55.43 | 62.65 | 63.34 | 52.37 | 47.16 | 32.18 | 25.85 | 38.56 | |||||||||||||
1966 | 3.71 | 16.62 | 29.34 | 36.70 | 47.53 | 58.72 | 68.69 | 63.71 | 59.67 | 46.19 | 29.28 | 18.71 | 39.91 | |||||||||||||
1967 | 15.02 | a | 8.12 | 26.77 | 37.28 | 45.90 | 55.50 | 64.98 | 64.19 | 58.72 | 46.10 | 30.90 | 20.40 | 39.49 | ||||||||||||
1968 | 13.26 | 14.07 | 32.61 | 41.18 | 46.15 | 55.58 | 64.18 | 61.27 | 58.58 | 49.21 | 34.18 | 17.89 | 40.68 | |||||||||||||
1969 | 11.65 | 17.91 | 25.84 | 39.22 | 50.45 | 53.40 | 61.77 | 70.24 | 61.72 | 44.58 | 35.90 | 21.74 | 41.20 | |||||||||||||
1970 | 7.06 | 14.36 | 25.35 | 36.91 | a | 44.65 | a | 56.55 | 67.66 | 67.45 | 58.42 | 46.13 | 32.02 | 20.29 | 39.74 | |||||||||||
1971 | 6.56 | 13.71 | 25.47 | 38.35 | 45.84 | 56.75 | 63.66 | 64.21 | 58.87 | 50.37 | 32.27 | 18.95 | 39.58 | |||||||||||||
1972 | 5.15 | 11.10 | 21.32 | 33.12 | 43.53 | 54.02 | 61.40 | 62.11 | 54.93 | 42.68 | 30.25 | 11.66 | 35.94 | |||||||||||||
1973 | 15.63 | 18.73 | 32.50 | 39.23 | 46.60 | 55.68 | 66.38 | b | 66.42 | 58.03 | 50.53 | 32.35 | 17.35 | 41.62 | ||||||||||||
1974 | 11.50 | 15.84 | 24.02 | 36.63 | 43.47 | 58.43 | 65.90 | 63.40 | 52.35 | 46.16 | 34.63 | 25.10 | 39.79 | |||||||||||||
1975 | 14.52 | 16.36 | 22.84 | 35.63 | c | 50.21 | 56.07 | 69.13 | 64.66 | 54.20 | 49.48 | 36.43 | 17.87 | 40.62 | ||||||||||||
1976 | 9.35 | 23.98 | 26.32 | 41.32 | 49.65 | 59.52 | 67.81 | 67.10 | b | 55.28 | 41.60 | a | 25.50 | 7.56 | 39.58 | |||||||||||
1977 | 2.00 | 18.59 | a | 30.65 | 41.25 | b | 50.53 | a | 57.97 | a | 66.09 | b | 60.71 | c | 55.27 | b | 48.97 | 31.70 | b | 15.97 | a | 39.97 | ||||
1978 | 9.74 | d | 14.30 | 26.97 | b | 37.88 | a | 49.50 | b | 59.47 | a | 64.89 | 64.93 | c | 58.29 | a | 48.12 | a | 29.68 | 13.29 | 39.75 | |||||
1979 | 1.78 | a | 4.61 | 23.73 | 34.73 | 43.34 | c | 57.12 | 64.35 | a | 62.37 | 58.93 | 44.69 | 31.48 | 24.62 | a | 37.65 | |||||||||
1980 | 12.20 | a | 15.52 | 23.69 | 42.13 | 55.37 | a | ----- | z | 72.24 | 67.84 | 58.60 | 46.10 | a | 36.74 | a | 18.27 | 40.79 | a | |||||||
1981 | 17.92 | 22.16 | 33.53 | 41.53 | 47.52 | 57.12 | 66.82 | 67.52 | 58.72 | 45.23 | 38.60 | a | 19.87 | a | 43.04 | |||||||||||
1982 | 12.67 | v | 23.32 | k | 25.52 | b | 37.80 | 48.13 | e | 56.52 | a | 65.20 | c | 62.90 | a | 53.03 | 47.89 | 29.48 | 23.60 | 45.01 | b | |||||
1983 | 17.94 | 26.29 | b | 29.23 | 38.55 | 45.60 | 55.55 | 68.66 | 72.13 | 57.73 | 46.58 | 33.98 | 6.45 | 41.56 | ||||||||||||
1984 | 11.77 | 26.93 | 22.65 | 39.00 | 48.52 | 57.12 | 67.21 | 67.80 | a | 55.37 | 46.55 | 31.90 | 16.32 | 40.93 | ||||||||||||
1985 | 9.92 | 13.93 | 31.21 | 39.45 | 50.40 | 55.18 | 66.24 | 61.35 | 55.29 | a | 48.05 | 26.12 | 7.42 | 38.71 | ||||||||||||
1986 | 15.77 | 14.75 | 30.53 | 41.07 | a | 48.76 | b | 58.50 | b | 65.08 | 64.63 | 55.08 | 46.76 | 28.55 | 22.55 | 41.00 | ||||||||||
1987 | 19.91 | c | 27.83 | b | 32.06 | 43.96 | b | 50.19 | d | 63.76 | c | 68.62 | c | 67.78 | f | 61.28 | a | 44.00 | c | 37.50 | i | 25.83 | h | 45.73 | c | |
1988 | 10.88 | n | 9.59 | l | 27.43 | i | 40.65 | g | 52.54 | s | 61.98 | h | ----- | z | 67.13 | h | 56.92 | f | 42.54 | h | 32.87 | g | 19.79 | q | ----- | z |
1989 | 16.39 | h | 7.94 | d | 20.30 | f | 35.59 | a | 47.71 | c | 55.29 | b | 67.67 | b | 66.85 | d | 58.86 | a | 44.47 | 26.63 | 7.77 | 41.88 | b | |||
1990 | 21.77 | g | 17.48 | a | 28.34 | 38.59 | a | 45.92 | ----- | z | ----- | z | 67.35 | 59.88 | 45.85 | 33.65 | 17.20 | a | 39.36 | c | ||||||
1991 | 7.07 | j | 20.46 | c | 26.02 | h | 38.64 | b | 46.56 | g | 56.70 | b | 63.97 | n | 70.85 | k | 56.79 | a | 43.65 | a | 24.98 | 18.43 | b | 37.09 | e | |
1992 | 18.02 | b | 22.88 | e | 27.93 | b | 37.36 | b | 50.75 | a | 56.86 | b | 61.23 | 63.48 | a | 55.20 | g | 44.58 | 30.54 | g | 19.48 | j | 42.56 | c | ||
1993 | 13.14 | c | 18.86 | g | 26.96 | g | 37.32 | 47.36 | f | 54.88 | 63.95 | c | ----- | z | 51.98 | g | ----- | z | 27.83 | d | 18.77 | c | 35.98 | f | ||
1994 | 0.22 | b | 6.98 | a | 29.29 | b | 40.00 | 50.41 | c | 60.85 | d | 66.50 | q | 62.97 | 59.12 | b | 49.15 | 38.34 | h | 25.84 | f | 39.89 | c | |||
1995 | 16.40 | a | 14.52 | b | 27.42 | a | 33.92 | d | 50.50 | d | 59.65 | f | 66.97 | b | 66.05 | ----- | z | 45.07 | a | 22.90 | 13.22 | a | 35.70 | b | ||
1996 | 4.58 | 11.64 | 17.94 | 32.85 | 43.45 | a | 54.05 | 60.77 | a | 64.94 | 58.02 | 45.66 | 24.10 | 14.21 | 36.02 | |||||||||||
1997 | 8.35 | 15.02 | 22.53 | 33.94 | c | 43.02 | a | 59.39 | h | 63.37 | 64.22 | a | 60.62 | a | 44.63 | 29.00 | 28.43 | a | 37.56 | a | ||||||
1998 | 18.69 | b | ----- | z | 33.78 | o | 43.48 | 52.67 | b | 58.03 | 69.35 | 70.23 | 62.71 | a | 48.74 | 35.98 | 22.69 | 48.26 | b | |||||||
1999 | 11.42 | 23.54 | 29.68 | 40.38 | a | 50.31 | 59.47 | 68.69 | 65.17 | b | 57.43 | 44.00 | 38.50 | 22.97 | 42.63 | |||||||||||
2000 | 12.89 | 22.28 | 33.76 | 38.13 | 51.35 | ----- | z | ----- | z | 68.78 | a | 57.62 | 48.35 | 32.65 | 8.50 | 37.43 | b | |||||||||
2001 | 18.84 | 10.50 | 26.97 | a | 38.93 | 51.78 | a | 58.60 | ----- | z | 68.39 | 57.72 | 44.92 | a | 41.53 | 26.23 | 40.40 | a | ||||||||
2002 | 20.29 | 24.23 | 19.81 | 36.20 | b | 44.63 | 57.70 | 67.77 | 60.80 | a | 55.66 | a | 39.47 | 29.57 | 22.90 | 39.92 | ||||||||||
2003 | 12.05 | 11.09 | 22.89 | 35.13 | 45.89 | 54.42 | 65.46 | e | 69.67 | a | 56.43 | a | 42.50 | 29.95 | a | 22.69 | 39.01 | |||||||||
2004 | 7.73 | a | 16.11 | b | 28.97 | 40.85 | 44.69 | 55.52 | 61.42 | 56.45 | b | 55.80 | ----- | z | ----- | z | ----- | z | 40.84 | c | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 11.46 | 16.26 | 26.56 | 38.22 | 48.00 | 57.00 | 65.80 | 65.23 | 57.45 | 46.56 | 31.87 | 17.86 | 40.00 | |||||||||||||
S.D. | 5.50 | 5.87 | 4.20 | 2.59 | 3.00 | 2.16 | 2.64 | 3.17 | 2.40 | 2.96 | 4.25 | 5.60 | 1.67 | |||||||||||||
SKEW | -0.18 | 0.18 | -0.17 | -0.01 | 0.22 | 0.83 | -0.10 | -0.17 | -0.16 | 0.71 | -0.02 | -0.36 | -0.66 | |||||||||||||
MAX | 20.29 | 27.83 | 33.76 | 43.96 | 55.37 | 63.76 | 72.24 | 72.13 | 62.71 | 57.18 | 41.53 | 28.43 | 43.04 | |||||||||||||
MIN | 0.22 | 4.61 | 17.94 | 32.85 | 43.02 | 53.40 | 60.77 | 56.45 | 52.35 | 39.47 | 22.90 | 6.45 | 35.94 | |||||||||||||
YRS | 39 | 41 | 41 | 44 | 43 | 39 | 39 | 41 | 41 | 42 | 40 | 40 | 28 |