YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1896 | ----- | z | ----- | z | 16.42 | 23.27 | 29.82 | c | 46.17 | g | 52.03 | 50.84 | 41.20 | 31.74 | 15.93 | 23.00 | a | 31.58 | c | |||||||
1897 | 16.84 | 18.00 | f | 17.90 | a | 29.37 | 39.16 | 38.07 | 47.23 | a | 46.42 | 38.63 | 31.45 | ----- | z | ----- | z | 33.90 | c | |||||||
1898 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1899 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.04 | c | 17.83 | a | 22.94 | j |
1900 | 20.55 | 17.04 | 27.65 | 29.83 | 39.58 | 47.40 | 48.03 | 48.45 | 40.80 | 33.45 | 27.83 | 19.55 | 33.35 | |||||||||||||
1901 | 16.13 | 18.36 | 18.65 | 27.13 | 39.97 | 42.74 | c | 52.65 | 52.07 | b | 38.13 | 33.80 | a | 23.52 | i | 16.19 | 32.35 | a | ||||||||
1902 | 12.48 | 17.86 | 12.00 | 27.60 | 34.06 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 20.80 | g | |||||
1903 | 17.66 | b | 6.14 | 21.10 | 24.53 | 33.77 | 44.23 | 52.23 | a | ----- | z | 36.97 | 32.19 | 24.70 | 17.23 | 28.25 | a | |||||||||
1904 | 13.22 | h | 20.36 | a | 22.16 | 30.10 | a | 35.23 | ----- | z | ----- | z | ----- | z | 42.71 | f | ----- | z | ----- | z | 9.77 | r | 26.96 | h | ||
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1906 | 5.92 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 8.42 | r | 21.52 | 21.52 | k | |
1907 | 15.52 | 22.25 | ----- | z | 29.76 | a | 32.16 | 35.87 | 46.39 | 44.94 | 40.10 | a | 34.03 | 19.54 | d | 16.57 | c | 30.65 | a | |||||||
1908 | 12.85 | d | 15.04 | c | 18.73 | a | 28.46 | f | 31.26 | h | 36.52 | e | 44.89 | d | 43.60 | a | 40.61 | b | 28.78 | d | 28.64 | h | ----- | z | 30.13 | d |
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.85 | q | 46.67 | d | 48.79 | c | 40.63 | 31.52 | d | 22.89 | b | 7.70 | d | 33.03 | f | |
1910 | 8.77 | a | 8.07 | 23.73 | a | 24.83 | a | ----- | z | ----- | z | ----- | z | 43.33 | v | 45.44 | c | 27.00 | 24.10 | ----- | z | 23.13 | e | |||
1911 | 15.31 | b | 5.88 | b | 19.68 | 23.50 | 28.32 | 41.34 | a | 45.50 | a | 46.32 | 35.50 | 29.23 | a | 15.69 | a | 8.23 | 26.21 | |||||||
1912 | 11.48 | 10.59 | 14.93 | a | 21.69 | a | 35.03 | b | 39.13 | 37.84 | 36.48 | 29.03 | 19.29 | 13.13 | 6.23 | 22.91 | ||||||||||
1913 | 3.33 | d | 11.21 | ----- | z | 15.57 | 46.37 | a | 40.35 | d | 31.77 | 29.57 | a | 40.47 | m | ----- | z | 23.50 | x | ----- | z | 25.45 | e | |||
1914 | 18.77 | a | 14.93 | a | 23.65 | e | 31.34 | a | 36.47 | a | 41.43 | 47.22 | d | 47.50 | e | 40.03 | 33.55 | 24.23 | 8.03 | 30.60 | ||||||
1915 | 11.61 | 18.26 | a | 22.00 | 33.67 | 34.93 | a | 37.93 | a | 41.87 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.61 | e | ||||
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.93 | b | 50.74 | ----- | z | 30.39 | 10.24 | a | 0.26 | 30.31 | g | |||
1917 | -5.81 | 3.96 | -1.48 | 14.13 | 25.81 | 38.73 | ----- | z | 48.19 | 49.00 | f | 32.06 | 27.89 | b | 25.00 | 20.85 | b | |||||||||
1918 | 15.14 | b | 13.08 | d | 23.86 | b | 25.93 | 35.58 | 51.57 | g | 50.10 | b | 47.79 | b | 42.45 | a | 35.00 | b | 18.67 | c | 11.61 | c | 29.02 | a | ||
1919 | 15.53 | a | 15.70 | a | 21.59 | b | 30.10 | a | 38.88 | f | 49.48 | i | ----- | z | 50.65 | h | 43.95 | k | 24.63 | d | 20.56 | c | 14.00 | c | 20.30 | e |
1920 | 25.00 | t | ----- | z | ----- | z | ----- | z | 36.97 | 44.23 | 53.19 | 47.55 | 41.03 | a | 30.81 | 20.47 | 15.16 | 36.18 | d | |||||||
1921 | 16.06 | 17.18 | 24.16 | 26.93 | 37.65 | 45.13 | 49.52 | 48.48 | 37.37 | 35.32 | 26.60 | 21.06 | 32.12 | |||||||||||||
1922 | 5.77 | 10.38 | b | 14.03 | 19.70 | 32.80 | a | 45.20 | 54.33 | j | 51.90 | 43.07 | 33.13 | 20.50 | 15.43 | a | 26.54 | a | ||||||||
1923 | 16.27 | a | 10.33 | a | 14.29 | c | 24.97 | 37.39 | 39.87 | 51.45 | 48.32 | 41.07 | 29.52 | 23.57 | 12.80 | a | 29.15 | |||||||||
1924 | 9.39 | 22.07 | 14.94 | 24.97 | a | 39.45 | 52.97 | ----- | z | 46.96 | h | 40.45 | a | 32.30 | a | 22.23 | 10.84 | 26.96 | b | |||||||
1925 | 13.39 | 19.68 | 22.06 | 29.40 | 38.81 | 41.43 | 51.87 | 48.70 | a | 41.33 | 32.61 | 22.10 | 18.61 | 31.67 | ||||||||||||
1926 | 11.94 | 20.46 | 23.42 | 33.63 | 39.03 | 46.00 | a | 49.39 | 48.10 | a | 39.50 | 32.74 | 25.97 | a | 13.94 | 32.01 | ||||||||||
1927 | 17.42 | 19.79 | 18.83 | b | 25.20 | 35.53 | a | 44.10 | 48.10 | 48.32 | 41.10 | 32.84 | 28.00 | 10.46 | r | 32.66 | a | |||||||||
1928 | 16.10 | a | 15.68 | a | 23.00 | 25.77 | 38.48 | 39.33 | f | 48.11 | l | 47.24 | f | 43.00 | 33.61 | 23.70 | 15.33 | a | 26.08 | c | ||||||
1929 | 9.48 | f | 10.26 | e | 19.40 | f | 25.72 | a | 33.06 | 41.41 | a | 52.32 | 50.84 | 37.00 | 29.65 | 19.47 | 22.03 | 32.18 | b | |||||||
1930 | 5.03 | a | 22.57 | 22.03 | 31.03 | 32.04 | g | 42.09 | s | 53.07 | p | 49.41 | d | 39.07 | 29.97 | 15.23 | 8.23 | 24.73 | c | |||||||
1931 | 11.94 | 16.96 | b | 19.06 | 28.73 | 36.00 | b | 47.63 | 53.97 | 49.74 | 42.63 | 34.33 | a | 14.17 | a | 10.39 | 30.46 | |||||||||
1932 | 3.20 | a | 12.96 | a | 17.10 | b | 28.28 | a | 35.93 | a | 41.97 | 50.23 | 49.06 | 39.83 | 29.67 | a | 23.68 | b | 3.73 | a | 27.97 | |||||
1933 | 10.33 | a | 2.57 | 19.52 | 24.63 | 31.77 | 48.93 | 53.13 | 47.68 | 44.86 | b | 36.13 | 24.07 | 21.77 | 30.45 | |||||||||||
1934 | 13.00 | a | 24.39 | 28.68 | 33.47 | 43.35 | 43.53 | 53.74 | 52.06 | 39.60 | 33.93 | a | 26.37 | c | 15.10 | 33.94 | ||||||||||
1935 | 16.35 | 16.29 | 20.06 | 29.80 | 34.13 | a | 45.00 | 53.71 | 51.48 | 42.97 | 29.74 | 18.57 | 15.71 | 31.15 | ||||||||||||
1936 | 12.47 | a | 14.77 | c | 18.58 | 29.47 | 37.84 | 48.03 | 53.84 | 50.84 | 38.23 | 31.87 | a | 19.20 | 14.62 | b | 30.81 | |||||||||
1937 | -0.63 | d | 12.04 | a | 19.52 | 26.67 | 39.90 | 42.57 | 51.39 | 52.74 | 43.63 | 33.28 | b | 25.27 | 17.87 | 30.35 | ||||||||||
1938 | 16.32 | 17.54 | 20.68 | 30.10 | 35.77 | 45.07 | 48.68 | 50.84 | 44.33 | 34.65 | 13.23 | 16.45 | 31.14 | |||||||||||||
1939 | 12.29 | 5.19 | a | 21.29 | 32.23 | 38.48 | 42.00 | 51.23 | 49.00 | 43.77 | 32.06 | 24.33 | 18.80 | a | 30.89 | |||||||||||
1940 | 13.72 | b | 17.56 | d | 24.19 | 31.21 | a | 39.00 | 47.20 | 54.42 | 51.52 | 44.40 | 34.52 | 18.60 | 17.66 | b | 32.83 | |||||||||
1941 | 12.55 | b | 18.21 | 22.40 | a | 27.89 | b | 38.77 | 43.87 | 50.42 | 50.27 | a | 37.53 | 31.38 | b | 22.73 | 17.63 | d | 31.14 | |||||||
1942 | 9.65 | 5.79 | 15.13 | a | 29.40 | 34.19 | 41.20 | 53.87 | 48.29 | 40.10 | 32.03 | 20.93 | 16.68 | 28.94 | ||||||||||||
1943 | 10.52 | d | 13.71 | 17.10 | a | 33.72 | a | 34.33 | a | 42.00 | 49.50 | a | 51.39 | 41.21 | a | 32.75 | c | 22.23 | 12.74 | d | 30.10 | |||||
1944 | 7.54 | c | 12.27 | c | 14.87 | a | 26.03 | 35.90 | a | 41.23 | 47.57 | a | 47.28 | b | 38.72 | a | 31.83 | a | 19.72 | a | 12.83 | b | 27.98 | |||
1945 | 11.70 | a | 14.89 | 18.61 | 22.04 | b | 36.44 | d | 37.90 | a | 49.23 | 48.29 | 36.17 | 33.16 | 20.76 | a | 9.26 | 28.20 | ||||||||
1946 | 8.83 | a | 9.93 | 14.79 | b | 31.46 | b | 35.74 | 44.73 | 52.42 | 48.61 | 38.97 | 27.45 | 14.43 | 17.80 | a | 28.76 | |||||||||
1947 | 2.39 | 14.11 | a | 20.74 | 25.38 | a | 38.97 | a | 40.72 | a | 50.97 | 49.84 | 39.07 | b | 35.41 | b | 17.73 | 13.07 | a | 29.03 | ||||||
1948 | 12.07 | a | 12.52 | b | 12.29 | 29.27 | 37.90 | b | 42.20 | j | 47.40 | a | ----- | z | 36.20 | 27.10 | 19.00 | p | 15.61 | 25.59 | c | |||||
1949 | -4.07 | a | ----- | z | ----- | z | 32.16 | e | 35.77 | 39.28 | e | 48.67 | d | 48.85 | e | 38.17 | f | 27.73 | e | 24.44 | c | 13.14 | c | 29.55 | c | |
1950 | 4.95 | j | 10.62 | g | 16.81 | j | ----- | z | 28.71 | 36.47 | 44.90 | 42.35 | 37.33 | 32.13 | h | 21.37 | k | 21.37 | l | 37.95 | g | |||||
1951 | ----- | z | 14.57 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.12 | w | 39.37 | 31.55 | 17.03 | 10.68 | 24.66 | h | ||||
1952 | 11.81 | 10.10 | 14.00 | a | 29.40 | 38.00 | 44.37 | 48.06 | 48.97 | b | 42.44 | c | 33.65 | 14.52 | a | 16.82 | t | 30.48 | a | |||||||
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 | ----- | 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 | 33.44 | v | 40.69 | n | 50.96 | f | 53.11 | c | 42.16 | e | 28.50 | e | 18.33 | 13.60 | a | 31.14 | g | |
1983 | 19.70 | a | 18.04 | a | 25.06 | 23.77 | 33.64 | c | 43.93 | c | 50.03 | b | 52.81 | 43.07 | a | 33.55 | b | 22.53 | 14.43 | c | 31.71 | |||||
1984 | 11.19 | 13.55 | 20.58 | 24.93 | a | 37.50 | a | 40.97 | 51.77 | a | 51.10 | a | 41.13 | ----- | z | ----- | z | ----- | z | 32.52 | c | |||||
1985 | ----- | z | ----- | z | ----- | z | ----- | z | 39.13 | 46.10 | a | 53.52 | 50.27 | a | 40.20 | 33.32 | 20.29 | b | 15.42 | 37.28 | d | |||||
1986 | 21.65 | 22.50 | 29.35 | 29.83 | a | 37.52 | 50.43 | 51.03 | 52.90 | 38.17 | 31.97 | 24.07 | 18.26 | 33.97 | ||||||||||||
1987 | ----- | z | 20.15 | a | 21.74 | 36.07 | 40.52 | 47.03 | 50.57 | a | 49.29 | 41.60 | 37.43 | a | 24.10 | 14.64 | c | 34.83 | a | |||||||
1988 | 13.58 | 17.03 | 21.48 | 31.10 | 36.52 | f | 51.00 | f | 53.93 | b | 49.79 | b | 40.08 | f | 38.73 | i | 20.60 | j | 11.25 | c | 28.31 | e | ||||
1989 | 9.72 | b | 10.43 | 24.03 | 33.93 | 36.77 | a | 39.93 | a | 52.19 | 54.58 | e | 39.82 | m | 31.29 | 23.24 | a | 15.89 | d | 30.18 | a | |||||
1990 | 13.65 | 13.78 | a | 23.84 | 32.78 | c | 35.17 | a | 43.29 | p | 52.55 | t | 50.28 | f | 49.17 | 31.42 | 22.73 | o | 3.43 | c | 25.40 | d | ||||
1991 | 10.97 | a | 27.85 | a | 20.14 | c | 32.42 | r | 33.45 | 45.50 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.58 | g | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 11.73 | 14.76 | 19.70 | 27.84 | 36.22 | 42.95 | 49.81 | 48.75 | 40.39 | 31.68 | 21.10 | 14.43 | 30.29 | |||||||||||||
S.D. | 5.69 | 5.46 | 4.99 | 4.40 | 3.56 | 3.74 | 4.45 | 4.03 | 3.11 | 3.01 | 4.33 | 5.05 | 2.40 | |||||||||||||
SKEW | -1.09 | -0.13 | -1.36 | -0.84 | -0.33 | 0.27 | -1.58 | -2.67 | -0.49 | -1.46 | -0.44 | -0.53 | -1.00 | |||||||||||||
MAX | 21.65 | 27.85 | 29.35 | 36.07 | 46.37 | 52.97 | 59.93 | 54.58 | 49.17 | 37.43 | 28.04 | 25.00 | 33.97 | |||||||||||||
MIN | -5.81 | 2.57 | -1.48 | 14.13 | 25.81 | 35.87 | 31.77 | 29.57 | 29.03 | 19.29 | 10.24 | 0.26 | 22.91 | |||||||||||||
YRS | 52 | 53 | 52 | 54 | 54 | 48 | 50 | 51 | 52 | 55 | 51 | 53 | 27 |