YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1897 | 3.54 | g | 0.65 | b | 8.11 | d | 33.10 | 39.90 | 52.83 | 59.77 | 52.84 | 54.93 | 36.48 | 13.17 | 3.45 | 32.30 | a | |||||||||
1898 | 7.10 | 7.54 | 16.26 | 29.23 | 42.06 | 53.73 | 56.97 | 53.74 | 45.33 | 31.17 | g | 13.93 | 2.55 | 29.86 | a | |||||||||||
1899 | -0.48 | -9.70 | a | 4.61 | 29.60 | 42.87 | a | 52.27 | 60.35 | 59.97 | 41.86 | a | 35.23 | 25.80 | 1.90 | 28.69 | ||||||||||
1900 | 6.55 | -3.21 | 13.80 | a | 37.31 | a | 45.87 | 54.00 | 57.74 | 63.48 | 47.44 | c | 39.52 | 16.10 | 13.71 | 32.69 | ||||||||||
1901 | 3.76 | b | 0.11 | a | 19.00 | 35.48 | a | 44.80 | a | 54.90 | a | 63.35 | 56.84 | 46.81 | d | 37.79 | b | 17.74 | g | 6.00 | b | 33.53 | a | |||
1902 | 6.00 | a | 6.75 | 22.77 | a | 29.87 | 47.32 | 50.17 | 57.40 | a | 56.23 | 41.80 | 34.07 | a | 21.93 | -0.10 | 31.18 | |||||||||
1903 | 1.79 | b | -3.96 | a | 20.06 | 31.24 | a | 45.39 | 52.73 | 59.03 | 57.26 | 45.34 | a | 35.45 | 18.22 | g | -1.67 | d | 31.15 | a | ||||||
1904 | -4.57 | a | -5.93 | b | 16.39 | 26.20 | 43.81 | 52.89 | b | 54.92 | e | 55.19 | 47.11 | c | 39.53 | a | 21.37 | 6.52 | b | 29.45 | ||||||
1905 | -6.52 | -3.93 | 25.07 | a | 29.50 | 41.07 | a | 53.60 | 56.81 | 59.71 | 52.79 | a | 32.42 | 23.80 | 10.31 | b | 31.22 | |||||||||
1906 | 6.58 | 7.21 | 12.00 | 36.90 | 45.52 | 54.17 | 56.68 | 58.19 | 52.30 | 33.45 | b | 21.33 | 7.23 | 32.63 | ||||||||||||
1907 | -6.66 | b | 8.36 | 22.27 | a | 23.97 | 33.09 | i | 53.17 | 58.13 | a | 58.23 | 44.13 | 30.63 | a | 21.03 | 12.33 | a | 29.60 | a | ||||||
1908 | 8.04 | e | 7.79 | 19.55 | 32.93 | 41.94 | 55.00 | 59.96 | d | 52.68 | 53.62 | a | 38.20 | f | 21.40 | 6.67 | a | 32.69 | a | |||||||
1909 | 1.55 | 6.83 | d | 20.61 | 25.67 | 39.65 | 56.27 | 59.19 | 62.45 | 48.83 | r | 36.33 | a | 21.15 | c | 1.74 | 30.13 | a | ||||||||
1910 | -0.65 | -4.71 | 31.29 | 35.27 | 39.58 | ----- | z | 58.35 | 53.67 | a | 50.18 | b | 48.14 | j | ----- | z | 5.93 | d | 29.88 | c | ||||||
1911 | -4.26 | 2.32 | c | 21.45 | b | 29.97 | a | 47.00 | 62.17 | a | 57.10 | a | 57.78 | h | 46.67 | 33.87 | a | 10.58 | d | 10.00 | b | 28.81 | a | |||
1912 | -12.94 | 6.21 | 8.70 | a | 34.90 | 43.86 | c | 51.57 | 59.30 | a | 55.70 | a | 46.00 | e | ----- | z | ----- | z | 6.32 | 29.96 | b | |||||
1913 | -1.71 | -0.79 | 10.97 | b | 35.73 | 43.97 | a | 57.33 | 57.00 | 60.26 | 48.17 | 30.13 | a | 28.83 | a | 12.58 | 31.87 | |||||||||
1914 | 7.54 | e | -4.89 | 20.06 | 33.23 | 45.70 | a | 56.53 | 60.97 | 54.88 | f | 49.50 | 42.46 | g | 31.82 | s | -3.42 | 29.47 | c | |||||||
1915 | -0.42 | 16.57 | 13.13 | 39.03 | 41.27 | a | 50.83 | 55.94 | 55.10 | 50.20 | 34.97 | 44.14 | w | 8.61 | 33.20 | a | ||||||||||
1916 | -11.81 | -0.25 | a | 20.93 | a | 33.03 | 43.87 | 53.43 | ----- | z | 58.83 | b | 44.45 | h | 27.81 | e | 14.54 | b | -6.17 | a | 23.42 | b | ||||
1917 | -5.50 | c | -5.48 | a | 17.03 | 31.63 | 37.50 | a | 49.07 | a | 59.24 | b | 52.57 | a | 49.70 | g | ----- | z | 29.47 | -2.27 | a | 26.33 | b | |||
1918 | -2.92 | f | 4.23 | b | 26.71 | 28.97 | 44.58 | g | 55.41 | a | 56.47 | a | 57.94 | 39.04 | b | ----- | z | 24.41 | c | 15.40 | a | 34.29 | c | |||
1919 | 18.52 | h | 7.11 | a | 18.10 | a | 33.79 | f | 46.59 | i | 63.50 | h | 60.84 | f | 55.26 | 47.00 | c | 27.78 | d | 15.24 | e | 1.87 | 24.62 | e | ||
1920 | ----- | z | 10.66 | 16.48 | d | 26.50 | 45.37 | a | 53.83 | a | 58.58 | 55.26 | d | ----- | z | 40.72 | b | 20.87 | 11.26 | h | 36.47 | c | ||||
1921 | 10.58 | 11.19 | a | 20.90 | 32.62 | a | 44.07 | a | 55.95 | i | ----- | z | 59.26 | 48.00 | 34.46 | e | ----- | z | 16.92 | g | 32.63 | d | ||||
1922 | 0.94 | -8.70 | a | 19.48 | 35.66 | a | 47.19 | 53.03 | 57.15 | e | 61.00 | i | ----- | z | 34.90 | a | 28.23 | 5.16 | 27.30 | b | ||||||
1923 | 8.79 | b | -0.37 | a | 10.59 | i | 30.87 | 43.11 | c | 57.52 | a | 63.06 | 58.78 | v | 52.07 | o | 34.65 | 25.63 | 12.42 | g | 32.91 | d | ||||
1924 | -7.90 | 12.55 | 19.23 | 31.57 | 35.11 | d | 52.41 | a | 55.19 | 57.65 | 46.00 | b | 43.93 | c | 17.57 | -2.72 | b | 30.05 | ||||||||
1925 | -2.10 | a | 10.92 | c | 22.19 | d | 39.67 | 39.65 | 55.03 | 54.68 | 56.70 | d | 51.77 | d | 21.56 | f | 22.59 | h | 7.55 | 33.60 | b | |||||
1926 | 0.16 | 15.79 | 16.00 | 36.46 | q | 48.10 | b | 50.73 | 58.77 | 59.42 | 47.54 | d | 35.00 | 18.66 | a | 3.52 | 32.15 | a | ||||||||
1927 | 7.00 | 12.68 | 23.16 | 34.17 | a | 41.65 | h | 50.03 | 54.87 | 58.55 | 52.90 | 36.00 | ----- | z | -8.00 | a | 32.14 | b | ||||||||
1928 | 5.23 | 10.03 | 21.90 | 25.21 | b | 42.74 | 48.73 | 59.39 | 61.52 | j | 44.33 | 35.77 | 21.88 | f | 14.73 | a | 30.81 | b | ||||||||
1929 | -13.66 | b | -5.52 | a | 24.10 | a | 32.83 | 39.55 | 51.76 | a | 60.81 | e | 57.45 | 44.70 | g | 35.71 | j | 18.67 | 8.58 | 27.46 | b | |||||
1930 | -7.73 | e | 19.37 | a | 22.03 | a | 36.23 | 42.60 | a | 51.97 | a | 63.93 | a | 62.79 | l | 44.13 | 35.94 | 22.50 | 13.86 | b | 31.35 | a | ||||
1931 | 12.90 | 20.41 | a | 20.43 | a | 33.33 | 38.83 | a | 58.97 | 60.94 | 57.28 | b | 53.87 | 39.45 | 22.73 | 13.03 | a | 36.01 | ||||||||
1932 | 3.10 | 8.76 | ----- | z | 36.76 | a | 45.77 | 56.63 | 58.48 | 58.48 | 44.69 | a | 31.52 | 19.97 | 0.29 | 33.13 | a | |||||||||
1933 | 10.81 | 2.25 | 22.35 | 32.31 | a | 46.74 | 61.13 | 62.39 | 56.00 | 51.47 | ----- | z | 19.38 | n | 6.63 | a | 35.21 | b | ||||||||
1934 | 8.67 | d | 10.15 | a | 16.00 | 31.03 | 52.93 | a | 57.60 | 62.17 | a | 55.32 | 43.30 | 39.90 | a | 26.27 | 9.83 | b | 34.43 | |||||||
1935 | 2.06 | 20.50 | 26.03 | a | 32.72 | a | 41.90 | b | 49.37 | 65.58 | 56.66 | b | 45.68 | b | 28.81 | 15.60 | 7.65 | 32.71 | ||||||||
1936 | -14.48 | -20.55 | 20.29 | 26.83 | 48.71 | 53.97 | 67.61 | 61.32 | 49.23 | 28.74 | 17.33 | 11.10 | 29.18 | |||||||||||||
1937 | -11.90 | 1.11 | 19.87 | 32.37 | 47.03 | 51.83 | 59.48 | 63.10 | 48.37 | 30.83 | a | 17.10 | 2.00 | 30.10 | ||||||||||||
1938 | -0.48 | 4.89 | 23.68 | 34.30 | 44.19 | 54.33 | 59.90 | 59.53 | a | 49.70 | 40.52 | 15.61 | b | 11.97 | 33.18 | |||||||||||
1939 | 12.10 | -4.29 | 19.32 | 29.73 | 49.68 | 54.14 | a | 61.39 | 55.20 | a | 48.03 | 33.94 | 21.20 | 15.06 | 32.96 | |||||||||||
1940 | -9.48 | 8.83 | 19.97 | 32.07 | 39.81 | 53.19 | c | 62.65 | 57.27 | a | 53.43 | 39.48 | b | 16.59 | a | 13.81 | 32.30 | |||||||||
1941 | 6.67 | a | 6.68 | 21.06 | 40.20 | 48.68 | 56.10 | 60.13 | 53.63 | a | 46.86 | a | 37.77 | 24.33 | 17.45 | 34.96 | ||||||||||
1942 | 7.87 | 10.61 | 24.29 | 37.33 | 44.70 | a | 54.30 | 57.84 | 58.71 | 44.70 | 34.61 | 19.70 | 4.10 | 33.23 | ||||||||||||
1943 | -7.32 | 8.93 | 12.74 | 33.03 | 39.35 | 55.83 | a | 59.55 | 58.58 | 43.03 | a | 36.13 | 21.83 | 9.41 | b | 30.93 | ||||||||||
1944 | 11.03 | 5.07 | 14.58 | 31.23 | 49.10 | 54.43 | 57.29 | 56.39 | 46.40 | 33.81 | 26.14 | a | 8.71 | 32.85 | ||||||||||||
1945 | 5.84 | 9.96 | 25.90 | 29.66 | a | 38.29 | 50.27 | 57.32 | 56.97 | 45.77 | 32.74 | 19.23 | 1.71 | 31.14 | ||||||||||||
1946 | 1.97 | 4.54 | 29.35 | 37.17 | 39.61 | 53.86 | a | 60.10 | 53.10 | 47.67 | 34.52 | 18.93 | 11.32 | 32.68 | ||||||||||||
1947 | 12.10 | a | 2.75 | 17.68 | 30.57 | 37.48 | 52.17 | 57.61 | 59.42 | 45.27 | 40.58 | 13.31 | a | 3.71 | 31.05 | |||||||||||
1948 | -3.43 | a | -0.04 | b | 14.62 | b | 37.69 | a | 44.00 | c | 53.27 | 58.10 | a | 56.53 | a | 51.50 | 32.19 | 21.82 | b | 5.19 | 30.95 | |||||
1949 | -2.48 | -0.14 | 18.45 | 30.93 | 46.61 | 53.93 | 57.35 | 56.20 | a | 41.67 | 35.23 | 26.00 | a | 6.39 | 30.84 | |||||||||||
1950 | -10.00 | c | 6.60 | c | 14.74 | 27.60 | 41.03 | 51.47 | 52.55 | 51.90 | 46.93 | 37.00 | 15.43 | 2.54 | c | 28.15 | ||||||||||
1951 | -1.00 | 10.32 | 9.52 | 30.48 | a | 44.45 | 47.00 | b | 57.23 | 55.55 | 42.22 | c | 34.29 | 16.20 | -0.68 | 28.80 | ||||||||||
1952 | -0.90 | 11.79 | 16.48 | 34.57 | 41.29 | 55.60 | 58.06 | 56.33 | d | 48.26 | c | 27.53 | a | 19.24 | a | 12.39 | 31.72 | |||||||||
1953 | 5.87 | 11.46 | 21.42 | 28.93 | 43.06 | 56.33 | 58.42 | 58.90 | 44.97 | 39.03 | 23.97 | 8.26 | 33.39 | |||||||||||||
1954 | -5.19 | 23.21 | 16.39 | 30.77 | 37.87 | 52.97 | 60.30 | a | 57.20 | a | 47.60 | 34.48 | 23.62 | d | 12.16 | 32.61 | ||||||||||
1955 | 3.84 | 1.14 | 15.29 | 37.97 | a | 47.32 | 51.87 | 63.00 | 60.84 | 44.76 | a | 32.77 | 8.60 | -1.39 | 30.50 | |||||||||||
1956 | -1.71 | -1.82 | a | 14.94 | 24.62 | a | 45.29 | 57.00 | 56.03 | 56.45 | 42.60 | 38.06 | 19.90 | 14.39 | 30.48 | |||||||||||
1957 | -5.10 | 7.25 | 20.29 | 31.77 | 44.68 | 51.63 | 62.48 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.09 | f | ||||||
1958 | 10.77 | a | 2.18 | 21.81 | 32.37 | 45.00 | 49.57 | 54.94 | 57.00 | 48.83 | 34.71 | 20.62 | a | 3.80 | a | 31.80 | ||||||||||
1959 | -1.16 | -1.24 | c | 23.90 | 29.66 | a | 45.16 | 57.10 | 57.10 | 60.87 | a | 48.23 | 30.74 | 12.59 | c | 19.55 | 31.87 | |||||||||
1960 | 1.60 | a | 3.03 | 3.84 | 33.33 | 42.27 | a | 50.57 | 59.23 | 56.39 | c | 47.67 | 31.38 | o | 20.37 | 3.21 | c | 29.23 | a | |||||||
1961 | -2.97 | a | 10.71 | 26.35 | 25.92 | e | 41.45 | b | 53.90 | ----- | z | 60.68 | i | 39.72 | l | 34.35 | e | 20.70 | c | 0.60 | f | 26.30 | d | |||
1962 | -3.83 | b | ----- | z | ----- | z | 31.00 | 49.96 | h | 55.41 | c | 59.00 | b | ----- | z | ----- | z | ----- | z | ----- | z | 1.50 | o | 35.39 | h | |
1963 | -11.00 | b | 4.26 | a | 28.35 | 35.27 | 47.17 | a | 58.27 | 63.06 | 57.90 | 51.47 | 42.87 | 20.24 | a | -1.67 | a | 33.02 | ||||||||
1964 | 7.16 | 14.28 | 13.06 | 35.73 | 46.90 | 54.13 | 63.35 | 52.85 | e | 44.10 | a | 30.69 | b | 16.69 | a | -1.50 | i | 34.45 | a | |||||||
1965 | -5.87 | a | -0.61 | 8.23 | 33.14 | a | 41.87 | 52.10 | 59.19 | 54.55 | 36.47 | ----- | z | 20.63 | 17.68 | 28.85 | a | |||||||||
1966 | -9.16 | ----- | z | 23.48 | 26.33 | 38.13 | 51.57 | 63.55 | 53.19 | 44.76 | a | 33.26 | 17.96 | b | 7.90 | 31.91 | a | |||||||||
1967 | 4.35 | -0.36 | 22.68 | 33.53 | 38.61 | 53.80 | 54.10 | 57.39 | ----- | z | ----- | z | ----- | z | 4.79 | g | 33.01 | d | ||||||||
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.68 | f | 58.86 | b | 50.04 | d | 32.00 | g | 22.42 | f | 10.13 | 39.68 | i | |
1970 | ----- | z | ----- | z | ----- | z | 34.69 | n | 44.60 | a | 55.29 | b | 57.88 | f | 57.67 | j | 48.73 | h | ----- | z | ----- | z | ----- | z | 49.94 | j |
1971 | ----- | z | ----- | z | ----- | z | 33.58 | r | 39.12 | g | 58.52 | c | 49.95 | i | 54.70 | d | 44.37 | k | 35.61 | h | 21.41 | m | 2.38 | g | 56.61 | j |
1972 | -9.97 | b | -4.92 | e | 18.28 | f | 32.40 | 48.63 | a | 51.88 | f | 56.44 | d | 57.52 | d | ----- | z | 30.83 | g | 17.13 | g | ----- | z | 30.02 | f | |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | 40.05 | l | 52.75 | n | 58.60 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.88 | o | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.09 | 4.64 | 18.85 | 32.18 | 43.51 | 53.81 | 58.99 | 57.05 | 47.12 | 34.95 | 19.94 | 6.72 | 31.70 | |||||||||||||
S.D. | 7.29 | 7.91 | 5.62 | 3.74 | 3.56 | 2.85 | 2.87 | 2.60 | 3.73 | 3.76 | 4.49 | 6.10 | 1.77 | |||||||||||||
SKEW | -0.13 | -0.17 | -0.48 | -0.10 | -0.01 | 0.38 | 0.50 | 0.20 | -0.14 | 0.10 | -0.12 | -0.15 | 0.10 | |||||||||||||
MAX | 12.90 | 23.21 | 31.29 | 40.20 | 52.93 | 62.17 | 67.61 | 63.48 | 54.93 | 43.93 | 29.47 | 19.55 | 36.01 | |||||||||||||
MIN | -14.48 | -20.55 | 3.84 | 23.97 | 35.11 | 47.00 | 52.55 | 51.90 | 36.47 | 27.53 | 8.60 | -8.00 | 28.15 | |||||||||||||
YRS | 68 | 70 | 68 | 70 | 68 | 70 | 67 | 65 | 61 | 56 | 57 | 64 | 35 |