YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.10 | 45.63 | 31.97 | 21.47 | 8.50 | a | 32.73 | g | ||||
1909 | 12.17 | a | 11.67 | a | 24.23 | a | 28.67 | 38.28 | b | 54.14 | b | 60.55 | 60.11 | d | 44.48 | e | 30.29 | 22.97 | 0.77 | a | 32.36 | |||||
1910 | 9.07 | a | 11.07 | a | 25.81 | 31.30 | 39.16 | 52.37 | 57.23 | 53.19 | 47.23 | 31.97 | 20.40 | 14.26 | 32.75 | |||||||||||
1911 | 11.45 | 10.46 | 21.87 | 30.79 | b | 41.65 | 53.76 | a | 55.58 | 55.87 | a | 48.45 | a | 30.07 | c | 15.27 | 8.20 | a | 31.95 | |||||||
1912 | 1.81 | 16.76 | 9.43 | a | 30.24 | a | 39.23 | e | 45.68 | b | 54.41 | b | 52.32 | 39.14 | a | 29.57 | a | 20.88 | f | 11.68 | 30.02 | a | ||||
1913 | 7.35 | 4.39 | 16.63 | a | 31.97 | 40.87 | a | 51.73 | 53.81 | 56.23 | 42.03 | a | ----- | z | ----- | z | 12.16 | 31.72 | b | |||||||
1914 | 19.59 | b | 9.56 | a | 22.61 | 32.64 | b | 44.74 | 54.79 | a | 59.03 | 55.10 | 45.27 | 33.97 | 20.47 | 6.45 | 33.68 | |||||||||
1915 | 11.61 | 18.50 | 17.32 | 37.77 | 38.68 | 50.20 | 54.65 | 52.61 | 46.17 | 34.58 | 19.79 | a | 2.31 | b | 32.02 | |||||||||||
1916 | 1.60 | a | 13.24 | 22.65 | 29.40 | 33.26 | 47.83 | 58.81 | 56.94 | 38.80 | 30.42 | 18.53 | -0.07 | a | 29.28 | |||||||||||
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.53 | 58.68 | 52.84 | 48.23 | 28.29 | 27.90 | 11.52 | 39.57 | e | |||||||
1918 | 5.23 | 14.57 | 26.71 | 31.20 | 42.55 | 57.17 | a | 60.68 | 57.35 | 43.77 | 39.29 | 19.77 | 16.03 | 34.53 | ||||||||||||
1919 | 14.39 | 11.00 | 24.23 | 34.43 | 42.65 | 53.13 | 60.42 | 56.55 | 51.43 | 30.26 | 17.45 | a | 6.81 | 33.56 | ||||||||||||
1920 | 18.00 | 17.59 | 20.97 | 26.77 | 45.90 | 53.63 | 56.74 | 53.06 | 44.13 | 33.16 | 19.87 | 13.70 | a | 33.63 | ||||||||||||
1921 | 15.39 | 19.14 | 26.00 | 30.00 | 42.71 | 55.71 | b | 59.24 | b | 56.34 | b | 46.10 | 32.65 | 21.86 | a | 15.60 | a | 35.06 | ||||||||
1922 | 6.45 | 10.44 | a | 19.65 | 31.13 | 42.43 | a | 53.70 | 55.45 | 58.52 | 46.23 | 29.87 | 23.67 | 14.32 | 32.66 | |||||||||||
1923 | 18.62 | b | 10.70 | a | 17.29 | 31.90 | ----- | z | ----- | z | 63.54 | c | 57.00 | c | 47.14 | i | 30.81 | d | 22.43 | g | 11.42 | 30.16 | d | |||
1924 | 7.04 | d | 18.52 | b | 13.48 | d | 28.77 | d | 35.11 | c | 51.31 | d | 56.31 | e | 56.08 | s | 41.40 | j | 35.56 | d | 21.38 | d | -0.93 | d | 26.65 | b |
1925 | 1.85 | k | 21.83 | e | 20.67 | g | 34.78 | g | 43.79 | c | 53.73 | d | 56.21 | b | 55.45 | i | 48.95 | i | 27.68 | 19.50 | d | 11.81 | e | 33.50 | e | |
1926 | 16.38 | o | 21.00 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.38 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.38 | k |
1928 | ----- | z | 11.71 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.21 | b | 37.42 | 23.21 | b | 13.06 | 29.23 | h | ||
1929 | 9.70 | a | 6.08 | c | 24.97 | a | 33.50 | 41.21 | c | 52.89 | b | 61.13 | ----- | z | 45.43 | 42.57 | x | 16.59 | c | 17.45 | b | 30.90 | b | |||
1930 | -2.74 | d | 24.39 | 20.29 | 38.83 | 41.55 | 52.20 | 59.71 | 60.06 | 47.00 | 34.10 | a | 19.83 | a | 16.97 | a | 34.35 | |||||||||
1931 | 16.48 | 22.58 | b | 21.03 | a | 31.61 | l | 38.96 | g | 58.17 | f | 61.13 | 56.67 | a | 50.30 | c | 34.87 | 19.14 | a | 13.47 | a | 32.85 | c | |||
1932 | 9.60 | a | 20.71 | l | 17.83 | h | 35.56 | c | 45.39 | 53.23 | 60.32 | 58.90 | a | 47.52 | e | 30.39 | 24.45 | a | 4.64 | c | 37.00 | b | ||||
1933 | 12.74 | d | 6.04 | a | 24.45 | 34.56 | e | 41.00 | a | 57.37 | k | 60.08 | r | 56.70 | h | 49.52 | a | 32.73 | a | 22.19 | c | 19.57 | a | 26.98 | c | |
1934 | 15.81 | 17.75 | 24.07 | d | 33.17 | l | 48.64 | i | 53.94 | l | 60.06 | 57.40 | p | 40.47 | 31.62 | j | 21.68 | k | 14.55 | b | 28.79 | f | ||||
1935 | 10.93 | a | 18.67 | j | 24.50 | u | ----- | z | 42.40 | p | 50.87 | 60.90 | j | 57.74 | 46.69 | d | 29.31 | b | 19.28 | e | 11.81 | d | 32.38 | e | ||
1936 | 10.59 | b | -1.43 | a | 21.00 | a | 31.87 | 46.20 | a | 55.70 | 59.77 | 57.10 | 45.63 | 29.68 | 21.20 | e | 13.32 | c | 32.55 | |||||||
1937 | -5.16 | 10.64 | 19.97 | 30.80 | 44.90 | 51.60 | 60.45 | b | 60.00 | 47.55 | a | 32.52 | 19.10 | a | 11.67 | a | 32.00 | |||||||||
1938 | 16.45 | 18.42 | b | 29.86 | b | 33.71 | b | 44.55 | 54.07 | 58.17 | a | 58.61 | 46.72 | a | 34.19 | 15.90 | 11.61 | 35.19 | ||||||||
1939 | 19.10 | a | 7.88 | b | 25.17 | b | 34.00 | 45.33 | a | 51.77 | 58.84 | 53.26 | 45.40 | 34.04 | c | 19.45 | a | 18.53 | a | 34.40 | ||||||
1940 | 5.19 | d | 22.00 | a | 27.71 | c | 33.93 | b | 44.10 | a | 53.21 | b | 62.80 | a | 55.83 | a | 52.63 | 36.47 | a | 18.73 | 16.85 | e | 35.79 | |||
1941 | 15.87 | a | 18.46 | b | 23.16 | 35.60 | 47.53 | a | 53.27 | 58.29 | 57.23 | a | 45.76 | a | 36.61 | 22.62 | a | 14.82 | c | 35.77 | ||||||
1942 | 5.13 | a | 5.04 | 22.71 | 37.03 | 41.39 | 53.87 | 56.97 | 55.90 | 43.27 | 34.80 | a | 19.87 | 18.40 | a | 32.86 | ||||||||||
1943 | 12.29 | 20.18 | 17.10 | 38.50 | 40.55 | 52.20 | 59.55 | 61.13 | 43.03 | 32.40 | a | 22.87 | 16.77 | 34.71 | ||||||||||||
1944 | 13.74 | 15.55 | 20.94 | 33.27 | 43.13 | 51.87 | 58.16 | 57.81 | 44.27 | 34.42 | 25.77 | 14.17 | b | 34.42 | ||||||||||||
1945 | 17.26 | 19.29 | 24.87 | 30.48 | a | 39.85 | r | 47.40 | 58.32 | 58.52 | 42.50 | 35.06 | 24.63 | 12.37 | a | 33.70 | a | |||||||||
1946 | 14.32 | ----- | z | ----- | z | ----- | z | ----- | z | 54.27 | 59.55 | 59.03 | 45.50 | 31.23 | 17.83 | 17.00 | 37.34 | d | ||||||||
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.10 | t | 39.90 | 19.97 | 17.03 | 25.63 | i | |||
1948 | 11.00 | 12.38 | 16.37 | a | 35.17 | a | 43.52 | 51.63 | 58.06 | 54.90 | 46.20 | 29.13 | 20.52 | a | 15.16 | 32.84 | ||||||||||
1949 | 0.23 | e | 14.36 | 26.39 | 35.60 | 48.71 | 55.17 | 60.32 | 56.45 | 42.77 | 33.17 | b | 26.57 | 11.00 | 34.23 | |||||||||||
1950 | 4.10 | 19.04 | 20.34 | b | 30.60 | 39.42 | 51.83 | 55.00 | 51.39 | 47.23 | 37.30 | a | 21.17 | 19.19 | d | 33.05 | ||||||||||
1951 | 11.42 | 17.54 | 18.48 | 28.70 | 43.74 | 48.63 | 57.84 | 56.00 | b | 47.90 | i | 32.47 | l | 20.57 | 12.94 | 31.59 | b | |||||||||
1952 | 16.55 | 19.83 | 20.61 | 34.57 | 44.03 | 58.04 | g | 59.74 | 58.87 | 48.86 | a | 32.74 | 19.43 | 14.84 | 33.64 | a | ||||||||||
1953 | 23.71 | 19.82 | 26.50 | e | 29.97 | 41.81 | 56.18 | b | 60.14 | j | 59.00 | 48.00 | 36.74 | 27.33 | 18.84 | 35.26 | a | |||||||||
1954 | 15.68 | 24.79 | 20.00 | 35.87 | 42.48 | 52.47 | 63.42 | 58.13 | 50.77 | 35.29 | 25.47 | 17.87 | 36.85 | |||||||||||||
1955 | 11.26 | 11.04 | 20.65 | 35.00 | 44.77 | 49.17 | 62.58 | 62.00 | 49.80 | 34.87 | 20.23 | 16.00 | 34.78 | |||||||||||||
1956 | 17.52 | 13.69 | 23.00 | 28.80 | 47.33 | a | 58.80 | 58.55 | 56.00 | a | 45.40 | 36.19 | 25.07 | 22.65 | 36.08 | |||||||||||
1957 | 7.48 | 22.21 | 23.71 | 33.53 | 43.65 | 49.10 | 61.77 | 59.77 | 44.97 | 40.16 | 24.50 | 20.81 | 35.97 | |||||||||||||
1958 | 15.26 | 20.00 | 19.29 | 33.10 | 49.13 | 54.70 | 58.14 | c | 58.68 | 50.53 | ----- | z | ----- | z | ----- | z | 39.87 | c | ||||||||
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 11.16 | 14.93 | 21.74 | 32.74 | 42.73 | 52.52 | 58.84 | 56.88 | 46.00 | 33.32 | 21.22 | 13.08 | 33.83 | |||||||||||||
S.D. | 6.25 | 6.01 | 4.01 | 2.92 | 3.32 | 2.64 | 2.39 | 2.50 | 3.07 | 3.11 | 2.96 | 5.33 | 1.64 | |||||||||||||
SKEW | -0.58 | -0.53 | -0.65 | 0.17 | -0.56 | -0.29 | -0.14 | -0.30 | -0.16 | 0.28 | 0.36 | -0.94 | -0.45 | |||||||||||||
MAX | 23.71 | 24.79 | 29.86 | 38.83 | 49.13 | 58.80 | 63.54 | 62.00 | 52.63 | 40.16 | 27.90 | 22.65 | 36.85 | |||||||||||||
MIN | -5.16 | -1.43 | 9.43 | 26.77 | 33.26 | 45.68 | 53.81 | 51.39 | 38.80 | 27.68 | 15.27 | -0.93 | 29.28 | |||||||||||||
YRS | 44 | 42 | 41 | 40 | 39 | 42 | 43 | 42 | 44 | 44 | 44 | 48 | 28 |