YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1892 | 9.97 | 21.66 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 15.81 | j | ||
1893 | 2.60 | u | 7.70 | 21.68 | 38.07 | 53.50 | 71.02 | 72.32 | 68.63 | 60.73 | 47.50 | b | 29.07 | c | 10.50 | 43.70 | a | |||||||||
1894 | 9.06 | 13.43 | 33.95 | 47.77 | 57.21 | 72.30 | 75.11 | 71.44 | 62.80 | 48.05 | 26.42 | 25.60 | 45.26 | |||||||||||||
1895 | 4.11 | 9.64 | 30.78 | f | 51.52 | 58.65 | 67.62 | 69.61 | 68.84 | 63.78 | 43.19 | b | 29.45 | 20.19 | 44.24 | a | ||||||||||
1896 | 13.61 | 20.46 | b | 24.50 | 46.23 | 62.52 | 66.79 | a | 70.37 | a | 68.89 | 55.60 | 43.66 | 19.77 | 22.78 | b | 42.93 | |||||||||
1897 | 7.26 | 18.18 | 22.03 | 44.75 | 56.32 | 65.17 | 74.11 | 67.10 | 67.55 | b | 52.50 | 28.00 | c | 14.43 | b | 43.12 | ||||||||||
1898 | 21.68 | 18.54 | b | 34.10 | b | 45.40 | 57.75 | a | 68.85 | g | 72.70 | a | 69.48 | a | 63.28 | 45.13 | 28.35 | 12.60 | a | 42.64 | a | |||||
1899 | 12.27 | 6.45 | 16.27 | 46.83 | 58.18 | a | 67.30 | 72.85 | a | 72.12 | b | 59.23 | ----- | z | 40.09 | a | 19.86 | b | 42.86 | a | ||||||
1900 | 20.22 | a | 7.18 | 25.40 | 51.45 | 62.81 | 69.32 | 70.77 | 75.35 | 60.60 | a | 57.32 | 27.55 | 19.10 | b | 45.59 | ||||||||||
1901 | 13.63 | a | 10.73 | 27.04 | d | 48.63 | 59.40 | a | 68.50 | 76.44 | 70.83 | a | 58.95 | 50.65 | a | 29.55 | 14.05 | 44.03 | ||||||||
1902 | 17.55 | a | 16.18 | 35.93 | a | 44.42 | 59.47 | 63.53 | 70.41 | d | 66.20 | d | 57.25 | b | 48.35 | 34.78 | a | 12.96 | d | 43.92 | ||||||
1903 | 13.79 | g | 11.87 | a | 32.98 | f | 44.93 | c | 58.54 | c | 64.83 | c | 68.31 | e | 64.65 | g | 57.39 | b | 48.27 | e | 28.78 | 9.94 | 43.65 | c | ||
1904 | 4.90 | a | 3.83 | b | 27.00 | 40.15 | 57.23 | a | 64.80 | 67.03 | a | 65.27 | a | 58.88 | 48.63 | a | 37.43 | 19.13 | 41.19 | |||||||
1905 | 5.28 | a | 9.48 | a | 34.84 | 44.30 | 53.87 | 64.98 | 68.95 | 69.58 | 63.53 | a | 45.07 | a | 34.32 | 22.37 | h | 44.93 | a | |||||||
1906 | 18.34 | b | 14.31 | b | 21.63 | 49.78 | n | 56.32 | a | 66.30 | c | 70.05 | a | 71.21 | q | 63.89 | b | 49.98 | h | ----- | z | 17.27 | e | 41.01 | d | |
1907 | 5.88 | b | 16.85 | a | 30.15 | 36.98 | a | 46.84 | 65.47 | a | 70.18 | 67.48 | 61.31 | i | ----- | z | 32.84 | b | 22.79 | 39.55 | b | |||||
1908 | 18.13 | a | 20.76 | 28.40 | b | 47.29 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 20.27 | a | 26.97 | g | |
1909 | 12.13 | 15.98 | 28.52 | 38.55 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.07 | 11.40 | 20.82 | g | |||||
1910 | 13.60 | 9.75 | 42.29 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.43 | p | 27.23 | 17.61 | 22.10 | g | ||||
1911 | 8.92 | 20.09 | ----- | z | 53.60 | o | 61.78 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 19.35 | t | 21.88 | b | 16.96 | i | ||
1912 | -4.00 | 13.14 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.88 | v | 22.45 | 10.53 | i | ||
1913 | 11.23 | 11.57 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.37 | 28.66 | 22.46 | h | ||||
1914 | 20.05 | 6.75 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.07 | b | 53.91 | d | 34.21 | a | 10.60 | b | 31.10 | f | ||
1915 | 10.78 | a | 23.98 | 27.05 | a | 55.27 | 52.82 | 62.35 | d | 67.55 | b | 65.15 | 59.98 | 49.47 | a | 33.90 | 20.92 | 44.10 | ||||||||
1916 | 6.88 | a | 10.48 | a | 25.53 | 42.63 | 53.73 | c | 61.33 | a | 76.15 | d | 69.35 | 59.00 | a | 46.52 | b | 32.42 | 10.21 | 41.19 | ||||||
1917 | 4.57 | d | 4.59 | a | 25.45 | 42.03 | 54.85 | 64.03 | 73.79 | b | 66.79 | 58.72 | 37.77 | a | 37.57 | 6.58 | a | 39.73 | ||||||||
1918 | 1.50 | 16.50 | a | 37.28 | a | 43.22 | 59.66 | b | 67.53 | 71.52 | 69.46 | c | 54.08 | 50.05 | 35.95 | a | 26.71 | 44.45 | ||||||||
1919 | 20.03 | 12.66 | f | 29.50 | 44.23 | d | 58.84 | 70.98 | 74.06 | 69.24 | 64.08 | 43.95 | 25.70 | b | 8.43 | a | 46.28 | a | ||||||||
1920 | 5.19 | 15.35 | b | 29.53 | 38.43 | 59.17 | a | 68.88 | 71.37 | a | 70.17 | b | 65.52 | c | 55.19 | 31.65 | 21.92 | 44.37 | ||||||||
1921 | 20.11 | 23.48 | 33.40 | 50.65 | 61.24 | 74.78 | 77.76 | 71.29 | c | 63.13 | c | 50.83 | a | 26.27 | 19.19 | 47.68 | ||||||||||
1922 | 12.13 | a | 9.14 | 30.32 | a | 45.50 | a | 63.92 | 70.52 | a | 70.74 | 74.55 | 66.23 | 52.97 | a | 38.09 | a | 15.09 | d | 45.77 | ||||||
1923 | 15.97 | 8.48 | 21.00 | 43.52 | 59.44 | 71.77 | 76.27 | a | 66.97 | a | 63.07 | 47.13 | 37.87 | 27.89 | 44.95 | |||||||||||
1924 | 5.71 | 21.29 | 29.98 | 44.27 | 50.97 | 65.12 | b | 70.67 | d | 67.87 | 57.15 | 55.39 | 31.80 | 7.68 | a | 42.33 | ||||||||||
1925 | 11.28 | a | 20.30 | a | 34.32 | 53.00 | 55.37 | 67.23 | b | 70.22 | b | 71.89 | c | 65.52 | b | 37.18 | 31.16 | a | 15.00 | 44.37 | ||||||
1926 | 15.90 | a | 22.34 | 25.17 | b | 42.71 | b | 63.34 | 64.52 | b | 73.21 | b | 69.36 | c | 57.07 | a | 45.98 | b | 26.68 | 13.44 | 43.31 | |||||
1927 | 12.37 | 22.52 | a | 34.37 | 45.84 | e | 54.37 | a | 65.59 | c | 69.43 | c | 66.60 | a | ----- | z | 49.97 | 28.67 | 5.87 | 41.42 | a | |||||
1928 | 15.19 | 19.76 | 32.07 | a | 39.65 | 61.16 | b | 62.96 | e | 72.44 | ----- | z | ----- | z | 41.97 | p | 35.17 | 23.78 | b | 40.24 | c | |||||
1929 | 0.00 | 8.64 | c | 33.24 | 47.28 | 54.90 | 65.66 | e | 71.47 | n | 70.81 | d | 58.47 | a | 49.48 | a | 27.75 | 16.61 | 39.35 | a | ||||||
1930 | 4.39 | 26.28 | a | 30.98 | 49.30 | 59.13 | a | 68.25 | d | 75.29 | 74.20 | a | 60.77 | b | 46.73 | 34.68 | 21.33 | b | 45.94 | |||||||
1931 | 23.66 | 30.07 | 30.13 | 49.03 | a | 56.57 | a | 74.00 | 75.89 | 70.42 | 67.57 | a | 52.87 | 38.17 | 28.13 | 49.71 | ||||||||||
1932 | 16.36 | b | 17.76 | 22.50 | 45.73 | 58.80 | a | 72.41 | c | 72.83 | a | 72.20 | a | 59.37 | 45.37 | 29.02 | 13.47 | a | 43.82 | |||||||
1933 | 20.33 | a | 11.84 | 30.00 | 44.38 | 58.29 | c | 77.98 | 79.39 | c | 70.82 | a | 67.28 | 46.13 | 29.47 | a | 15.06 | 45.91 | ||||||||
1934 | 19.84 | 17.96 | 28.08 | a | 45.60 | 69.26 | 74.07 | c | 77.64 | b | 70.75 | a | 58.20 | 54.00 | 37.78 | 13.23 | 47.20 | |||||||||
1935 | 7.47 | a | 24.20 | 32.79 | 43.23 | 54.52 | 63.50 | b | 78.52 | 71.19 | 60.35 | 46.82 | 27.02 | 15.44 | 43.75 | |||||||||||
1936 | 1.42 | a | -2.71 | 28.03 | 38.50 | 62.95 | 65.04 | e | 79.86 | b | 73.98 | a | 65.48 | 44.94 | 28.32 | 19.24 | 42.09 | |||||||||
1937 | 2.00 | 11.09 | 25.31 | 43.08 | 58.98 | b | 65.45 | a | 75.97 | b | 76.35 | 62.38 | 44.55 | 29.53 | 14.73 | 42.45 | ||||||||||
1938 | 11.62 | c | 19.48 | 35.39 | 45.31 | a | 55.19 | b | 67.20 | 72.77 | 73.35 | 61.27 | 53.85 | 29.98 | 18.87 | 45.36 | ||||||||||
1939 | 17.23 | 6.96 | a | 27.53 | 41.81 | d | 62.45 | 67.10 | a | 72.75 | a | 69.56 | 62.97 | a | 46.66 | 36.11 | b | 25.50 | d | 44.72 | ||||||
1940 | 4.29 | b | 17.86 | 21.94 | 41.92 | 54.77 | 66.25 | b | 73.08 | 66.92 | 62.88 | a | 52.55 | 26.33 | 19.48 | 42.36 | ||||||||||
1941 | 14.77 | 12.92 | b | 26.40 | 50.22 | 62.72 | a | 67.33 | 72.26 | 69.97 | 61.33 | 49.52 | a | 35.45 | 24.77 | 45.64 | ||||||||||
1942 | 19.06 | 18.30 | 34.24 | 50.38 | 54.21 | 64.60 | 69.45 | 68.58 | 55.58 | 48.69 | 32.53 | 14.15 | 44.15 | |||||||||||||
1943 | 5.55 | a | 16.50 | 22.26 | 43.27 | 54.58 | 68.65 | 72.69 | 69.85 | d | 55.37 | k | 48.16 | 27.58 | 21.92 | 41.00 | a | |||||||||
1944 | 25.27 | 18.88 | 24.61 | 40.88 | 60.26 | 67.90 | 69.44 | 69.58 | 60.32 | 50.05 | 36.70 | 18.68 | 45.21 | |||||||||||||
1945 | 12.08 | 16.52 | 38.18 | 43.17 | 51.05 | 60.03 | 68.74 | 69.35 | 58.52 | 47.26 | 30.75 | 11.84 | 42.29 | |||||||||||||
1946 | 13.47 | 16.19 | a | 40.11 | 49.73 | 53.82 | 65.85 | 71.40 | 66.89 | 58.75 | 49.90 | 31.41 | a | 19.74 | b | 44.77 | ||||||||||
1947 | 19.73 | a | 13.30 | 27.45 | a | 40.82 | 51.87 | a | 63.66 | a | 70.68 | 76.37 | 61.18 | 58.21 | 25.38 | a | 16.68 | 43.78 | ||||||||
1948 | 8.35 | 13.22 | 25.37 | 49.64 | e | 57.06 | 66.08 | 73.27 | 70.12 | a | 65.62 | 49.26 | 32.83 | 16.86 | b | 43.97 | ||||||||||
1949 | 10.65 | g | 10.80 | a | 27.76 | 46.40 | a | 59.77 | a | 69.07 | a | 73.40 | 71.48 | 56.90 | 50.90 | 36.02 | 18.66 | 47.38 | a | |||||||
1950 | 3.98 | a | 14.98 | 22.53 | 35.65 | 53.90 | a | 66.24 | a | 68.19 | 64.77 | a | 60.53 | 51.28 | a | 25.90 | 10.82 | 39.90 | ||||||||
1951 | 6.89 | 15.62 | 19.47 | 40.37 | 59.52 | a | 61.85 | 69.02 | 65.24 | 54.53 | 47.27 | a | 24.50 | 11.19 | d | 39.62 | ||||||||||
1952 | 10.50 | 21.90 | 24.24 | 48.05 | 57.29 | 67.70 | 70.92 | 67.16 | 61.90 | 43.65 | 34.17 | 22.47 | 44.16 | |||||||||||||
1953 | 15.26 | 16.61 | 29.60 | 40.10 | 56.77 | 68.00 | a | 69.65 | 71.06 | 59.75 | 55.13 | a | 37.93 | 20.63 | 45.04 | |||||||||||
1954 | 8.69 | 30.68 | 27.13 | 45.27 | 51.98 | a | 68.98 | c | 72.34 | 68.60 | 59.09 | a | 46.32 | a | 36.97 | 21.92 | a | 44.83 | ||||||||
1955 | 12.15 | 12.43 | 24.08 | 52.77 | 62.34 | c | 66.82 | b | 76.48 | f | 74.21 | 60.25 | 49.38 | a | 24.48 | 9.64 | c | 40.78 | a | |||||||
1956 | 11.28 | a | 13.45 | 24.94 | 41.68 | 57.90 | 71.58 | 67.97 | a | 68.87 | a | 57.90 | a | 55.73 | a | 32.87 | 23.21 | 43.95 | ||||||||
1957 | 9.05 | 18.71 | 28.85 | 45.12 | 56.79 | 65.28 | 74.77 | a | 69.16 | 58.82 | 46.75 | a | 31.80 | 24.03 | 44.09 | |||||||||||
1958 | 20.73 | 13.96 | 30.65 | 47.00 | 60.82 | 62.13 | 68.81 | 70.24 | 61.27 | 51.31 | 34.20 | 14.29 | 44.62 | |||||||||||||
1959 | 9.85 | 16.05 | 32.85 | 46.38 | 60.47 | 69.30 | 71.73 | 72.35 | 60.63 | 43.05 | 24.17 | 28.05 | 44.57 | |||||||||||||
1960 | 14.48 | 16.38 | 20.15 | 44.85 | 56.28 | a | 63.42 | 70.26 | 70.21 | b | 61.62 | 50.95 | 35.95 | 18.90 | 43.62 | |||||||||||
1961 | 15.48 | 25.43 | 35.08 | 39.77 | 55.26 | 68.60 | 69.82 | 71.03 | 59.30 | 50.90 | a | 33.15 | 15.40 | 44.94 | ||||||||||||
1962 | 7.87 | 14.70 | 27.34 | 43.38 | 62.00 | a | 66.98 | 69.68 | 70.21 | 58.81 | a | 52.79 | 37.85 | 21.94 | 44.46 | |||||||||||
1963 | 5.18 | 15.00 | 36.00 | 49.62 | 57.87 | 70.68 | 73.74 | 70.29 | 64.80 | 60.95 | 40.67 | 10.85 | 46.30 | |||||||||||||
1964 | 21.55 | 25.29 | 26.23 | a | 47.90 | d | 62.76 | 69.63 | 76.74 | 68.73 | 61.84 | b | 51.52 | c | 35.97 | 13.77 | 46.83 | |||||||||
1965 | 9.79 | 12.12 | 18.61 | 43.13 | 61.20 | d | 68.07 | 70.60 | a | 69.13 | 53.63 | 51.82 | 33.50 | 27.73 | a | 43.28 | ||||||||||
1966 | 4.12 | a | 15.43 | 37.39 | 41.69 | c | 55.35 | 69.33 | 76.44 | 68.55 | 61.50 | a | 49.52 | b | 29.67 | a | 17.66 | 43.89 | ||||||||
1967 | 15.45 | 10.23 | 29.81 | 45.69 | a | 53.52 | 67.05 | a | 70.03 | 68.40 | 61.70 | 48.52 | 32.63 | 22.65 | 43.81 | |||||||||||
1968 | 15.19 | 14.62 | 40.50 | 49.59 | a | 54.42 | a | 67.82 | 71.68 | 71.03 | 61.33 | 51.84 | 33.88 | 17.45 | 45.78 | |||||||||||
1969 | 8.55 | 19.32 | 23.74 | 49.82 | 61.67 | a | 61.88 | 72.60 | 73.66 | 63.28 | 47.03 | 34.29 | a | 21.40 | 44.77 | |||||||||||
1970 | 5.65 | 16.07 | 25.24 | 46.14 | a | 59.90 | 71.38 | 75.02 | 71.13 | 60.75 | 49.60 | 31.08 | 16.98 | 44.08 | ||||||||||||
1971 | 6.65 | 17.41 | 27.68 | 47.22 | 57.06 | 71.86 | a | 68.47 | 69.48 | 61.87 | 53.81 | 33.22 | 17.90 | 44.39 | ||||||||||||
1972 | 6.58 | 11.00 | 26.73 | 42.15 | 61.28 | a | 64.25 | 67.27 | 68.98 | a | 56.21 | b | 41.68 | a | 30.72 | a | 9.88 | a | 40.56 | |||||||
1973 | 13.85 | a | 18.59 | 37.94 | 42.32 | b | 53.21 | 68.02 | 70.32 | 70.56 | 57.32 | 53.10 | b | 33.12 | a | 14.82 | 44.43 | |||||||||
1974 | 8.43 | b | 13.05 | 26.77 | 44.02 | 52.32 | a | 63.13 | 73.11 | 65.43 | a | 54.05 | 46.85 | g | 32.93 | a | 22.35 | 41.42 | a | |||||||
1975 | 13.66 | b | 14.36 | 20.37 | 36.02 | 58.58 | 65.98 | 72.42 | 67.15 | a | 54.52 | c | 47.13 | e | 35.03 | 15.80 | a | 41.75 | ||||||||
1976 | 8.72 | a | 23.48 | 27.10 | 47.76 | a | 54.37 | a | 67.05 | a | 70.77 | 68.39 | 58.50 | a | 41.15 | a | 25.82 | 9.42 | a | 41.88 | ||||||
1977 | -2.48 | 19.27 | 35.13 | 51.22 | 64.98 | a | 65.14 | b | 70.07 | c | 62.79 | 57.88 | 44.45 | 29.05 | 12.31 | 42.48 | ||||||||||
1978 | 2.08 | 7.50 | 28.45 | b | 43.00 | 56.52 | c | 63.39 | c | 66.89 | c | 67.52 | g | 63.58 | 46.39 | 27.80 | c | 10.48 | b | 37.83 | a | |||||
1979 | -1.18 | 6.06 | a | 25.48 | a | 38.56 | c | 51.95 | 64.62 | b | 68.63 | 63.98 | a | 63.27 | j | 46.31 | 31.45 | 22.21 | c | 38.01 | a | |||||
1980 | 12.96 | d | 12.50 | 24.13 | a | 46.31 | d | 58.67 | a | 64.39 | b | 71.32 | 67.21 | 58.03 | 43.76 | 33.88 | b | 18.57 | b | 42.64 | ||||||
1981 | 16.53 | 21.73 | 35.77 | a | 47.12 | a | 55.07 | a | 63.83 | d | 68.59 | b | 65.83 | h | ----- | z | 43.78 | a | 35.88 | b | 16.23 | a | 40.45 | b | ||
1982 | -1.12 | c | 12.88 | b | 27.05 | a | 40.40 | 59.98 | 61.16 | b | 71.93 | a | 67.32 | 57.82 | 47.85 | 26.78 | a | 23.46 | d | 41.29 | ||||||
1983 | 17.22 | b | 24.81 | b | 32.85 | 41.88 | a | 54.15 | a | 66.22 | e | 74.69 | b | 74.39 | 61.11 | c | 48.86 | b | 33.66 | b | 3.46 | d | 44.44 | |||
1984 | 11.43 | c | 26.64 | d | 24.11 | d | 47.64 | a | 54.80 | d | 67.93 | b | 70.07 | a | 71.95 | 56.22 | 50.46 | d | 33.17 | f | 17.14 | c | 45.31 | a | ||
1985 | 8.94 | d | 13.33 | b | 36.09 | b | ----- | z | 62.29 | 62.67 | 70.32 | a | 64.80 | a | 58.33 | a | 46.56 | d | 26.71 | d | 6.56 | g | 45.00 | b | ||
1986 | 16.89 | c | 13.88 | d | 34.69 | e | ----- | z | 57.29 | n | 69.41 | c | 71.71 | c | 66.94 | g | 60.42 | e | ----- | z | 31.93 | j | ----- | z | 44.50 | f |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 11.08 | 15.58 | 28.82 | 44.93 | 57.58 | 66.95 | 71.96 | 69.62 | 60.39 | 48.79 | 31.81 | 17.43 | 43.97 | |||||||||||||
S.D. | 6.39 | 5.99 | 5.47 | 4.06 | 3.80 | 3.36 | 2.94 | 2.79 | 3.22 | 4.27 | 4.31 | 5.63 | 1.86 | |||||||||||||
SKEW | -0.07 | 0.00 | 0.23 | 0.02 | 0.12 | 0.58 | 0.62 | 0.14 | 0.12 | 0.04 | -0.18 | -0.09 | -0.05 | |||||||||||||
MAX | 25.27 | 30.68 | 42.29 | 55.27 | 69.26 | 77.98 | 79.86 | 76.37 | 67.57 | 60.95 | 40.67 | 28.66 | 49.71 | |||||||||||||
MIN | -4.00 | -2.71 | 16.27 | 35.65 | 46.84 | 60.03 | 66.89 | 62.79 | 53.63 | 37.18 | 19.77 | 3.46 | 39.62 | |||||||||||||
YRS | 92 | 94 | 88 | 85 | 86 | 86 | 85 | 81 | 82 | 82 | 88 | 91 | 65 |