YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1937 | ----- | z | ----- | z | ----- | z | 40.95 | s | 54.40 | a | 61.13 | 68.19 | 68.45 | a | 55.23 | 40.73 | a | 22.60 | 7.42 | 47.27 | d | |||||
1938 | 5.53 | a | 4.72 | a | 32.52 | a | 39.62 | 50.08 | 60.81 | a | 68.06 | 67.65 | a | 60.43 | 48.46 | c | 19.97 | a | 14.50 | a | 39.36 | |||||
1939 | 9.29 | -4.91 | 20.08 | a | 44.16 | a | 59.10 | a | 58.37 | 71.32 | 68.95 | 59.90 | 38.77 | 32.58 | 24.71 | 40.19 | ||||||||||
1940 | 2.80 | a | 13.12 | 17.03 | a | 35.93 | 53.50 | 61.67 | 68.26 | b | 66.02 | a | 61.26 | a | 49.45 | 21.32 | 15.13 | d | 38.79 | |||||||
1941 | 7.26 | 9.13 | b | 21.34 | b | 42.98 | d | 56.92 | 66.77 | 70.40 | 66.34 | 56.93 | 43.36 | b | 27.81 | a | 19.79 | b | 40.75 | |||||||
1942 | 15.82 | a | 9.93 | 28.37 | 44.18 | 50.47 | 61.72 | a | 65.84 | 66.32 | a | 53.83 | 47.28 | a | 25.63 | 8.24 | b | 39.80 | ||||||||
1943 | -2.04 | f | 12.57 | a | 16.73 | 43.50 | 49.84 | 59.79 | a | 70.32 | a | 66.85 | 56.00 | 49.00 | a | 28.12 | a | 19.44 | 42.92 | a | ||||||
1944 | 20.17 | b | 9.14 | a | 15.12 | c | 40.18 | 57.92 | ----- | z | 67.27 | 64.90 | 56.42 | ----- | z | ----- | z | ----- | z | 41.39 | d | |||||
1945 | 10.03 | 11.29 | b | 32.48 | 36.48 | 47.87 | 59.98 | 67.50 | 66.79 | 52.84 | a | 41.85 | 17.48 | a | 5.85 | a | 37.54 | |||||||||
1946 | 5.43 | c | 5.24 | a | 29.88 | a | 46.19 | d | 51.27 | 61.62 | a | 69.90 | 65.00 | b | 55.65 | 38.98 | a | 20.45 | a | 9.45 | 38.26 | |||||
1947 | 11.04 | d | 6.12 | c | 21.12 | c | 39.72 | ----- | z | 59.27 | 70.69 | 70.21 | 53.57 | 50.32 | 19.83 | a | 10.00 | a | 37.44 | a | ||||||
1948 | ----- | z | ----- | z | 25.85 | r | 36.37 | 54.68 | 61.12 | 67.18 | 66.97 | 61.65 | 45.35 | d | 24.25 | 5.81 | 47.04 | c | ||||||||
1949 | -1.31 | -3.35 | b | ----- | z | 42.15 | g | 53.22 | b | 61.67 | 67.21 | 68.88 | a | 53.98 | 40.57 | a | 33.16 | b | 5.60 | 37.96 | b | |||||
1950 | -14.66 | b | 4.70 | a | 18.00 | b | 32.04 | b | 47.58 | 59.85 | c | 64.84 | b | 62.32 | 55.93 | 44.48 | b | 18.57 | b | 5.02 | c | 33.22 | ||||
1951 | -2.79 | c | 5.46 | a | 11.03 | 37.17 | a | 55.83 | b | 58.25 | 67.78 | b | 62.17 | a | 50.69 | a | 38.52 | c | 17.68 | b | 3.48 | 33.77 | ||||
1952 | 0.65 | 16.33 | 19.05 | 49.95 | b | 54.45 | a | 63.17 | 66.63 | 65.45 | 58.70 | 40.92 | a | 28.75 | 16.84 | 40.07 | ||||||||||
1953 | 8.69 | 15.66 | 22.85 | 34.58 | 52.23 | 61.92 | 66.56 | 68.06 | 54.78 | 50.03 | a | 32.58 | 15.35 | 40.28 | ||||||||||||
1954 | -5.94 | 24.77 | 22.87 | a | 36.22 | 48.26 | 61.08 | 68.15 | a | 64.71 | 53.23 | 42.34 | 33.15 | 22.13 | 39.25 | |||||||||||
1955 | 6.29 | 5.40 | b | 11.92 | a | 46.57 | 55.52 | 62.22 | 69.97 | 69.33 | a | 54.33 | 44.81 | 13.55 | b | 1.05 | 36.75 | |||||||||
1956 | 3.90 | b | 3.52 | 15.29 | 31.78 | 51.60 | 67.07 | b | 65.03 | 65.68 | 51.37 | 46.00 | 26.83 | 11.81 | 36.66 | |||||||||||
1957 | -1.24 | b | 9.10 | b | 25.37 | d | 38.65 | 53.95 | 59.47 | 72.68 | 64.63 | 53.24 | a | 43.00 | a | 26.95 | a | 19.03 | a | 38.74 | ||||||
1958 | 14.06 | 7.38 | 26.60 | 42.85 | 56.30 | a | 58.87 | 64.42 | 65.48 | 55.62 | 45.19 | 24.55 | 4.41 | b | 38.81 | |||||||||||
1959 | -1.83 | a | 3.27 | 29.55 | 39.30 | 49.42 | 65.37 | 68.05 | 68.03 | 53.76 | a | 35.35 | 18.37 | 20.56 | 37.43 | |||||||||||
1960 | 1.70 | a | 6.66 | 13.00 | 38.22 | 52.89 | 60.98 | a | 71.16 | 67.24 | 58.59 | b | 44.25 | a | 25.02 | 10.83 | a | 37.54 | ||||||||
1961 | 6.73 | a | 13.02 | a | 26.53 | a | 35.83 | 51.45 | 67.98 | 68.39 | 72.19 | 52.55 | 44.44 | 27.07 | 3.81 | 39.17 | ||||||||||
1962 | 3.09 | b | 2.50 | 18.18 | 39.10 | 50.42 | 63.57 | 65.43 | a | 67.39 | 54.25 | b | 47.38 | a | 31.52 | 14.03 | b | 38.07 | ||||||||
1963 | -1.26 | b | 9.43 | a | 29.55 | 40.63 | 51.74 | 65.48 | 70.50 | 67.35 | 59.65 | 53.60 | 29.47 | 6.31 | 40.20 | |||||||||||
1964 | 11.15 | a | 16.09 | 15.56 | 43.08 | 56.23 | 60.83 | 69.16 | 61.77 | 51.70 | 44.52 | 24.37 | -0.94 | 37.79 | ||||||||||||
1965 | -2.29 | 5.86 | 13.92 | 39.37 | 51.60 | 62.07 | 66.24 | 64.68 | 46.27 | 45.43 | b | 22.67 | 14.74 | 35.88 | ||||||||||||
1966 | -9.16 | 4.23 | 27.00 | 34.90 | 49.63 | 63.83 | 70.24 | 63.48 | 57.77 | 42.74 | 17.18 | 8.61 | 35.87 | |||||||||||||
1967 | 8.03 | a | 1.63 | b | 19.72 | d | 36.62 | 48.52 | 62.38 | a | 67.35 | 66.32 | 59.77 | 42.15 | 26.68 | 12.24 | 37.62 | |||||||||
1968 | 3.06 | 5.67 | c | 28.92 | 40.97 | 49.47 | 61.47 | a | 66.97 | a | 62.29 | c | 56.40 | a | 42.40 | 27.85 | 7.86 | c | 37.78 | |||||||
1969 | -3.98 | 8.45 | 13.47 | a | 40.67 | 53.97 | 56.30 | 66.79 | 71.08 | 57.12 | 37.98 | 29.42 | 14.90 | 37.18 | ||||||||||||
1970 | 0.17 | a | 8.66 | 15.40 | b | 37.23 | d | 51.39 | 68.48 | 70.74 | 68.07 | a | 56.40 | ----- | z | 24.30 | 8.00 | a | 37.17 | a | ||||||
1971 | -4.60 | 11.48 | c | 21.60 | 42.15 | 53.11 | 64.23 | 64.24 | 68.74 | 55.93 | a | 44.48 | g | 23.89 | b | 8.88 | c | 37.24 | a | |||||||
1972 | -1.19 | 3.62 | a | 22.10 | 38.32 | 58.05 | 64.60 | 63.34 | 67.88 | a | 51.85 | 38.16 | 22.28 | 1.81 | 35.90 | |||||||||||
1973 | 13.34 | 15.57 | 34.55 | 40.07 | 54.89 | 64.20 | 66.35 | 69.95 | 55.53 | 48.75 | a | 17.95 | 5.90 | b | 40.59 | |||||||||||
1974 | -3.35 | 5.93 | 16.23 | 37.27 | 47.97 | 63.67 | 71.73 | 62.42 | a | 52.15 | 45.79 | b | ----- | z | ----- | z | 39.98 | b | ||||||||
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 | -8.12 | a | 0.22 | c | 9.11 | q | 41.25 | h | ----- | z | 61.10 | 66.17 | g | 61.80 | f | 57.27 | 41.73 | 18.93 | 3.04 | g | 28.52 | f | ||||
1979 | -5.24 | f | -6.04 | 9.09 | o | 27.80 | h | 44.31 | b | 60.78 | 67.30 | c | 60.53 | a | 54.75 | h | 40.33 | a | 22.07 | a | 13.74 | f | 41.33 | e | ||
1980 | 0.95 | 5.23 | a | 14.22 | f | 45.00 | i | 58.27 | e | 59.40 | e | 65.86 | c | 59.39 | d | 49.98 | b | 38.53 | 28.16 | e | 8.43 | d | 37.42 | b | ||
1981 | 8.77 | 12.86 | 29.19 | ----- | z | 53.32 | n | 58.65 | g | 64.98 | h | 65.88 | j | ----- | z | ----- | z | ----- | z | ----- | z | 16.94 | i | |||
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 3.06 | 7.49 | 21.73 | 39.52 | 52.52 | 62.06 | 67.95 | 66.25 | 55.31 | 43.76 | 24.44 | 10.57 | 38.04 | |||||||||||||
S.D. | 7.43 | 6.03 | 6.60 | 3.99 | 3.44 | 2.72 | 2.27 | 2.88 | 3.28 | 4.11 | 5.06 | 6.32 | 1.91 | |||||||||||||
SKEW | 0.03 | 0.19 | 0.22 | 0.38 | -0.03 | 0.51 | 0.10 | -0.35 | -0.20 | 0.21 | -0.03 | 0.38 | -0.72 | |||||||||||||
MAX | 20.17 | 24.77 | 34.55 | 49.95 | 59.10 | 68.48 | 72.68 | 72.19 | 61.65 | 53.60 | 33.16 | 24.71 | 40.75 | |||||||||||||
MIN | -14.66 | -6.04 | 11.03 | 31.78 | 44.31 | 56.30 | 63.34 | 59.39 | 46.27 | 35.35 | 13.55 | -0.94 | 33.22 | |||||||||||||
YRS | 38 | 40 | 36 | 36 | 39 | 40 | 40 | 40 | 40 | 38 | 39 | 37 | 29 |