YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1895 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.04 | e | 24.93 | c | 14.00 | 1.72 | b | 20.67 | h | |
1896 | -4.70 | a | 4.14 | 2.32 | c | 32.21 | a | 48.47 | a | 52.42 | d | 54.59 | i | 50.69 | b | 41.08 | e | 27.42 | 0.53 | 3.74 | 23.48 | a | ||||
1897 | -9.20 | a | -6.19 | a | 1.73 | a | 30.67 | 38.87 | a | 48.96 | g | 58.58 | 51.16 | 48.43 | b | 34.33 | a | ----- | z | ----- | z | 27.60 | c | |||
1898 | 2.29 | 0.04 | 14.26 | 28.31 | a | 39.19 | 51.19 | c | 53.88 | f | 50.28 | b | 42.50 | b | 29.57 | c | 7.59 | h | -2.13 | a | 25.55 | b | ||||
1899 | -6.67 | a | -9.29 | 0.41 | d | ----- | z | 40.26 | 52.21 | b | 54.90 | a | ----- | z | 40.67 | 33.17 | b | 24.23 | 1.11 | c | 23.10 | b | ||||
1900 | 0.97 | b | -11.86 | 8.90 | a | 32.97 | a | 42.53 | a | 50.80 | 52.84 | 60.64 | f | 45.37 | 38.54 | e | 9.87 | 4.81 | 25.07 | a | ||||||
1901 | -4.67 | d | -3.04 | 16.39 | c | 32.79 | a | 42.68 | c | ----- | z | 58.62 | w | 54.16 | 42.00 | 35.35 | 15.07 | a | -0.47 | a | 23.03 | b | ||||
1902 | -0.55 | b | 3.04 | 22.55 | b | 29.57 | g | 45.13 | 47.67 | 54.90 | 51.52 | 37.89 | c | 30.87 | a | 19.30 | j | -3.04 | c | 29.00 | b | |||||
1903 | -1.79 | b | -6.68 | 16.45 | b | 30.03 | a | 40.23 | a | 46.24 | a | 52.71 | 50.90 | a | 39.43 | 32.23 | a | 10.77 | -4.50 | c | 25.50 | |||||
1904 | -6.37 | d | -12.68 | a | 11.69 | b | 29.39 | b | 42.00 | a | 51.83 | f | 51.61 | c | 50.03 | 43.62 | a | 36.15 | e | 23.29 | b | 6.64 | f | 26.87 | b | |
1905 | -8.07 | c | -0.96 | 21.23 | a | 27.13 | 39.23 | 50.17 | 54.16 | 55.32 | 48.73 | 31.16 | 16.48 | a | 3.90 | a | 28.21 | |||||||||
1906 | 0.57 | c | -7.11 | 9.97 | 34.67 | 40.48 | 50.83 | 54.00 | d | 52.41 | b | 47.23 | 31.10 | 16.14 | a | -4.93 | c | 27.11 | ||||||||
1907 | -17.97 | b | -5.22 | a | 10.45 | 23.37 | 32.32 | 49.90 | 53.65 | 49.71 | 38.70 | 28.06 | 17.07 | a | 12.00 | u | 25.46 | a | ||||||||
1908 | 1.16 | 2.31 | 11.77 | 30.30 | 39.90 | 51.55 | a | 55.90 | 48.74 | d | 47.69 | a | 32.81 | 17.70 | -0.95 | k | 30.89 | a | ||||||||
1909 | -8.39 | h | -0.88 | d | 16.68 | 23.50 | 39.39 | 53.45 | a | 56.74 | 56.58 | 43.21 | b | 31.10 | b | 18.45 | a | -4.93 | a | 30.30 | a | |||||
1910 | -3.80 | a | -9.41 | a | 28.17 | a | 31.13 | 35.97 | 53.60 | 53.55 | 49.55 | 41.80 | 34.03 | 14.31 | a | -4.84 | 27.01 | |||||||||
1911 | -16.27 | a | -8.04 | 14.32 | 28.90 | 42.32 | 55.93 | 52.71 | 50.55 | 42.37 | 31.77 | 6.20 | 7.45 | 25.69 | ||||||||||||
1912 | -23.68 | -2.21 | 7.03 | 29.63 | 44.23 | 48.53 | 55.45 | 52.06 | 42.03 | 27.74 | 19.63 | 2.21 | b | 25.22 | ||||||||||||
1913 | -13.60 | a | -6.93 | 10.77 | 34.70 | 40.06 | 53.93 | 55.13 | 54.87 | 43.79 | a | 27.68 | 23.47 | 11.58 | 27.96 | |||||||||||
1914 | 2.97 | -11.68 | 18.38 | b | 30.50 | 44.48 | 52.37 | 58.55 | 51.74 | 44.70 | 37.32 | ----- | z | ----- | z | 32.93 | b | |||||||||
1915 | -11.84 | l | 4.60 | c | 14.42 | 36.37 | 40.03 | 45.60 | 52.16 | 48.26 | 44.00 | 32.35 | 18.47 | 5.26 | 31.05 | a | ||||||||||
1916 | -14.81 | -8.03 | 9.37 | a | 28.45 | a | 38.71 | 47.57 | 63.00 | 53.71 | 42.00 | 27.68 | 15.67 | -8.84 | 24.54 | |||||||||||
1917 | -13.52 | -15.14 | 12.81 | 27.83 | 35.97 | 44.79 | a | 55.97 | 49.13 | 41.90 | 22.20 | a | 23.80 | -10.00 | b | 22.98 | ||||||||||
1918 | -11.94 | -1.43 | 19.06 | 24.77 | 36.07 | a | 49.23 | 51.35 | 52.32 | 36.73 | 34.87 | a | 24.40 | 6.90 | 26.86 | |||||||||||
1919 | 3.33 | a | -0.46 | 10.61 | 29.27 | 42.23 | 56.43 | 57.74 | 53.06 | 46.03 | a | 21.20 | a | 3.72 | a | -5.13 | 26.50 | |||||||||
1920 | -12.68 | -3.17 | 13.10 | 20.47 | 38.27 | a | 49.72 | a | 53.32 | 50.26 | 46.10 | 34.35 | 15.80 | 5.67 | a | 25.93 | ||||||||||
1921 | 0.87 | a | 6.71 | 13.00 | 28.83 | 41.81 | 55.57 | 58.48 | 50.39 | 45.43 | 33.42 | 10.23 | 4.58 | 29.11 | ||||||||||||
1922 | -7.83 | a | -12.43 | 17.60 | a | 30.45 | a | 45.52 | 52.23 | 51.94 | 53.84 | 44.07 | 30.13 | 24.76 | a | -3.68 | 27.22 | |||||||||
1923 | -2.71 | -10.19 | a | 5.43 | a | 25.67 | 39.13 | 54.00 | 58.50 | a | 48.35 | 45.10 | 29.48 | 19.41 | a | 7.73 | a | 26.66 | ||||||||
1924 | -17.18 | c | 4.21 | 14.90 | 26.77 | 33.71 | 45.83 | 50.29 | 50.87 | 41.60 | 36.13 | 14.90 | a | -12.11 | c | 24.16 | ||||||||||
1925 | -9.63 | a | 0.46 | b | 14.65 | 32.20 | 36.35 | 50.60 | 52.90 | 52.55 | 47.03 | 24.48 | 14.45 | a | 3.03 | 26.59 | ||||||||||
1926 | -0.10 | 8.85 | a | 12.00 | a | 23.33 | 42.19 | 46.60 | 54.77 | 50.58 | 39.20 | 29.58 | 11.33 | -4.06 | 26.19 | |||||||||||
1927 | -4.57 | a | 1.00 | 18.55 | 30.62 | a | 39.06 | 49.37 | 53.23 | 48.71 | 43.60 | 32.58 | 13.29 | b | -12.61 | 26.07 | ||||||||||
1928 | 0.87 | a | 4.89 | b | 12.23 | 22.47 | 41.55 | 46.37 | 56.45 | 51.55 | 40.67 | 31.37 | a | 18.96 | c | 11.43 | a | 28.23 | ||||||||
1929 | -18.71 | -9.81 | a | 18.71 | 30.03 | 35.65 | 47.00 | 55.48 | 52.48 | 41.23 | 33.45 | 12.69 | a | 1.19 | d | 24.95 | ||||||||||
1930 | -12.06 | 11.89 | 13.84 | 30.20 | 40.13 | 51.37 | 55.61 | 55.10 | 41.13 | 31.90 | 20.47 | 7.66 | b | 28.94 | ||||||||||||
1931 | 6.07 | a | 18.25 | 16.55 | 27.03 | 37.13 | a | 53.93 | 55.71 | 52.32 | 45.40 | 35.87 | 24.13 | 9.55 | 31.83 | |||||||||||
1932 | 0.35 | 2.41 | 10.29 | 31.13 | 41.65 | 53.93 | 53.83 | a | 53.39 | 41.03 | 29.16 | 12.72 | a | 1.32 | 27.60 | |||||||||||
1933 | -2.70 | a | -5.18 | 27.44 | d | 18.24 | a | 43.10 | 55.37 | 56.00 | 51.65 | 46.63 | 26.13 | 15.20 | -6.53 | a | 27.11 | |||||||||
1934 | 0.52 | 3.89 | a | 10.00 | a | 29.47 | 45.17 | a | 51.73 | 54.66 | b | 49.52 | 38.97 | 35.45 | 23.71 | b | -0.52 | 28.55 | ||||||||
1935 | -12.48 | b | 13.11 | 15.48 | 28.47 | 38.17 | a | 49.07 | 66.71 | 53.37 | a | 39.70 | 32.00 | 3.10 | a | 0.93 | a | 27.30 | ||||||||
1936 | -25.48 | -24.45 | 16.45 | 22.93 | a | 50.32 | 45.63 | 67.97 | a | 50.27 | a | 38.27 | 23.89 | c | 11.00 | 4.39 | 23.43 | |||||||||
1937 | -17.58 | -5.56 | a | 15.23 | 31.80 | 43.87 | 52.67 | 62.26 | 64.10 | 39.03 | 25.80 | a | 20.43 | b | -9.70 | a | 26.86 | |||||||||
1938 | -1.74 | -4.86 | ----- | z | 22.94 | n | 38.00 | 52.13 | ----- | z | ----- | z | 49.80 | y | 40.45 | ----- | z | ----- | z | 24.80 | g | |||||
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.77 | 58.10 | 46.40 | 33.58 | 23.63 | 17.61 | 39.68 | f | ||||||
1940 | -4.52 | 8.93 | 14.87 | a | 30.70 | 41.52 | 50.13 | 59.26 | 56.23 | 48.87 | 40.45 | 18.48 | a | 10.74 | 31.30 | |||||||||||
1941 | 2.00 | a | 2.50 | 17.63 | a | 37.23 | 48.42 | 57.80 | 60.29 | 56.61 | 48.00 | 34.45 | 22.83 | 12.97 | a | 33.40 | ||||||||||
1942 | 8.13 | a | 4.50 | 23.81 | 34.90 | 42.47 | a | 52.00 | 56.26 | 56.48 | ----- | z | 39.79 | q | ----- | z | -2.38 | b | 30.69 | c | ||||||
1943 | -9.32 | c | ----- | z | 6.80 | a | 31.80 | 39.19 | 52.38 | a | 61.93 | a | 57.29 | 44.10 | 33.81 | 23.20 | 8.26 | 31.77 | a | |||||||
1944 | 10.39 | -0.36 | a | 11.62 | b | 28.00 | b | 45.04 | c | 52.96 | c | 54.93 | a | 56.03 | 45.81 | d | 34.90 | a | 26.96 | b | 6.48 | 31.06 | ||||
1945 | 4.23 | a | 3.41 | a | 24.94 | ----- | z | ----- | z | ----- | z | 56.32 | 54.55 | 46.67 | 32.00 | a | 17.07 | -1.76 | b | 26.38 | c | |||||
1946 | -4.63 | a | -7.21 | d | 27.55 | ----- | z | 62.33 | v | 57.95 | i | 59.52 | 52.61 | 45.77 | 33.26 | 16.97 | 4.35 | 25.35 | c | |||||||
1947 | 5.35 | 1.52 | a | 17.29 | 31.50 | 39.81 | 51.27 | 60.74 | 63.48 | 46.53 | ----- | z | ----- | z | ----- | z | 35.28 | c | ||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.77 | 51.17 | 34.13 | ----- | z | ----- | z | 47.69 | i | |||
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.00 | 42.40 | 35.84 | 25.40 | 0.97 | 32.52 | g | |||||
1950 | -16.90 | -4.11 | 12.70 | a | 26.20 | 40.90 | 51.50 | 54.39 | 50.58 | 46.73 | 36.61 | 14.20 | -1.03 | 25.98 | ||||||||||||
1951 | -7.00 | 4.68 | 8.26 | 31.00 | 45.65 | 48.07 | 55.52 | 53.55 | 44.60 | 34.06 | 12.93 | -1.10 | 27.52 | |||||||||||||
1952 | -9.03 | 8.48 | 14.48 | 35.70 | 43.31 | b | 55.23 | 56.71 | 54.61 | 48.10 | 29.19 | 21.57 | 10.55 | 30.74 | ||||||||||||
1953 | 3.48 | 9.29 | 18.68 | 28.70 | 43.10 | 54.17 | 56.23 | a | 58.48 | 44.90 | 39.97 | 25.07 | 5.48 | 32.30 | ||||||||||||
1954 | -10.94 | 20.48 | a | 17.16 | 30.23 | 38.61 | 52.86 | b | 58.48 | 55.06 | 47.03 | 34.63 | a | 24.38 | a | 12.58 | 31.72 | |||||||||
1955 | 0.16 | -3.29 | 7.23 | 37.10 | 47.68 | 52.60 | 62.20 | a | 58.35 | 45.13 | 34.39 | 9.70 | -4.07 | a | 28.93 | |||||||||||
1956 | -3.29 | -4.97 | 10.16 | 25.63 | 41.03 | 56.70 | 55.26 | 54.19 | 41.77 | 36.52 | 22.30 | 8.03 | a | 28.61 | ||||||||||||
1957 | -8.23 | 2.71 | 16.55 | 30.03 | 42.35 | 50.30 | 63.31 | e | 56.48 | 44.83 | 36.74 | 22.97 | a | 10.76 | b | 30.73 | ||||||||||
1958 | 7.23 | a | 1.79 | 19.39 | 32.17 | 42.77 | 47.33 | 54.03 | 54.86 | c | 46.03 | 35.83 | a | 20.21 | a | 1.19 | 30.24 | |||||||||
1959 | -5.59 | b | 0.36 | 22.58 | 30.96 | c | 43.18 | c | 56.53 | 57.77 | 58.06 | 46.13 | 32.35 | 12.90 | 19.26 | 31.21 | ||||||||||
1960 | -1.97 | 3.07 | 8.35 | 31.85 | c | 40.42 | e | 51.45 | a | 56.32 | 57.45 | 47.86 | a | 34.71 | 19.52 | a | -0.31 | b | 29.06 | |||||||
1961 | -2.90 | a | 8.35 | e | 23.07 | c | 27.67 | 38.72 | b | 52.83 | 56.93 | b | 57.61 | c | 44.57 | 36.03 | a | 20.03 | 0.10 | 30.25 | ||||||
1962 | -6.86 | b | -3.77 | b | 15.63 | a | 29.10 | 45.71 | 53.93 | 55.55 | 57.06 | 44.73 | 37.42 | 25.27 | 7.39 | 30.10 | ||||||||||
1963 | -6.19 | -0.54 | 19.37 | a | 33.37 | 43.32 | 56.97 | 57.94 | 58.29 | 47.43 | 42.39 | 22.77 | -1.61 | 31.12 | ||||||||||||
1964 | 4.55 | 8.76 | 9.71 | 34.40 | 44.55 | 52.41 | a | 60.23 | 52.74 | 43.03 | 32.84 | 19.60 | -5.17 | b | 29.80 | |||||||||||
1965 | -10.39 | -3.68 | 7.96 | d | 32.97 | 43.13 | 50.87 | 55.42 | 53.84 | 39.40 | 35.74 | 17.63 | 10.97 | 27.82 | ||||||||||||
1966 | -14.90 | -4.48 | a | 21.90 | 28.97 | 39.68 | 53.13 | 59.65 | 54.55 | 45.00 | 33.42 | 14.47 | 2.58 | 27.83 | ||||||||||||
1967 | -0.48 | -6.64 | 17.90 | 29.37 | 36.42 | 50.10 | 54.68 | 51.84 | 46.00 | 34.00 | 19.97 | 6.00 | 28.26 | |||||||||||||
1968 | -2.81 | 0.66 | 22.84 | 31.13 | 39.40 | a | 52.37 | 55.48 | 54.29 | 46.70 | 34.90 | 22.87 | 0.81 | 29.89 | ||||||||||||
1969 | -10.06 | 5.46 | 6.29 | 34.50 | 42.90 | 47.37 | 57.45 | 57.74 | 47.57 | 33.47 | a | 22.53 | 5.90 | 29.26 | ||||||||||||
1970 | -7.39 | 0.54 | 9.90 | a | 30.83 | 42.03 | 58.00 | 58.84 | 55.06 | 47.33 | 35.16 | 21.40 | 0.32 | 29.34 | ||||||||||||
1971 | -9.42 | 3.36 | 19.90 | 34.20 | 41.10 | 56.37 | 53.45 | 52.45 | 47.56 | e | 38.45 | 21.77 | 1.48 | 30.06 | ||||||||||||
1972 | -8.07 | a | -5.07 | 16.42 | 31.50 | 48.16 | 52.17 | 54.77 | 56.55 | 43.73 | 32.06 | 20.23 | -5.77 | 28.06 | ||||||||||||
1973 | 2.90 | 7.21 | 29.16 | 31.47 | 42.97 | 51.20 | 53.19 | 58.39 | 44.47 | 39.90 | 16.79 | a | -0.70 | h | 34.33 | a | ||||||||||
1974 | -8.68 | -3.07 | 12.58 | 31.37 | 40.97 | 49.57 | 58.94 | 49.45 | 37.57 | 30.87 | 19.30 | 9.52 | 27.36 | |||||||||||||
1975 | -2.13 | -3.19 | a | 12.39 | h | 25.93 | a | 41.87 | 48.87 | 57.42 | 54.10 | 43.47 | 37.42 | 22.73 | 3.31 | b | 29.98 | a | ||||||||
1976 | -2.45 | 12.38 | 12.13 | 34.03 | 40.23 | 53.60 | 56.65 | 56.71 | 43.10 | 28.87 | a | 14.47 | -1.28 | b | 29.04 | |||||||||||
1977 | -11.61 | 11.11 | a | 21.53 | a | 36.00 | a | 52.45 | 54.59 | c | 59.17 | b | 50.31 | b | ----- | z | ----- | z | ----- | z | -3.24 | f | 34.19 | d | ||
1978 | ----- | z | -4.74 | a | 15.26 | ----- | z | 44.70 | a | 50.81 | c | 56.11 | c | 55.19 | 49.13 | 33.50 | a | 9.52 | e | ----- | z | 34.39 | c | |||
1979 | -16.74 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -16.74 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -5.60 | -0.49 | 14.83 | 29.97 | 41.48 | 51.55 | 56.54 | 53.76 | 44.05 | 32.88 | 17.75 | 2.21 | 28.16 | |||||||||||||
S.D. | 7.55 | 7.70 | 6.05 | 3.79 | 3.61 | 3.13 | 3.34 | 3.33 | 3.14 | 4.18 | 5.69 | 6.67 | 2.29 | |||||||||||||
SKEW | -0.30 | 0.03 | 0.14 | -0.60 | 0.33 | -0.12 | 0.99 | 0.57 | -0.30 | -0.48 | -0.78 | 0.08 | -0.02 | |||||||||||||
MAX | 10.39 | 20.48 | 29.16 | 37.23 | 52.45 | 58.00 | 67.97 | 64.10 | 51.17 | 42.39 | 26.96 | 19.26 | 33.40 | |||||||||||||
MIN | -25.48 | -24.45 | 0.41 | 18.24 | 32.32 | 44.79 | 50.29 | 48.26 | 36.73 | 21.20 | 0.53 | -12.61 | 22.98 | |||||||||||||
YRS | 78 | 79 | 78 | 74 | 78 | 75 | 77 | 80 | 81 | 81 | 75 | 73 | 57 |