YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 5.67 | a | 5.67 | k |
1942 | -5.35 | -6.82 | 5.77 | 24.83 | 27.06 | 33.03 | 38.97 | 35.70 | a | 27.00 | 18.77 | 8.40 | -3.43 | a | 16.99 | |||||||||||
1943 | -0.21 | b | -1.54 | 5.06 | 22.73 | 28.07 | a | 32.17 | a | 37.10 | 39.23 | 23.20 | 16.94 | 7.37 | -4.42 | 17.14 | ||||||||||
1944 | -11.50 | a | -1.97 | 12.65 | 20.90 | 29.90 | 30.23 | 31.61 | 32.16 | ----- | z | 21.52 | 12.20 | ----- | z | 17.77 | b | |||||||||
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.00 | m | 43.40 | a | 39.77 | a | 30.00 | 20.87 | a | 14.63 | c | 2.75 | c | 25.24 | f | |
1954 | 8.68 | 8.75 | 5.12 | f | 25.47 | 32.23 | 36.33 | 46.84 | 37.67 | s | 36.27 | 27.26 | 16.96 | d | -6.67 | d | 23.21 | b | ||||||||
1955 | -0.83 | a | -2.68 | 8.13 | 17.37 | 28.90 | 34.73 | 39.97 | 41.00 | d | 30.60 | 20.19 | 10.59 | c | 8.58 | 19.71 | ||||||||||
1956 | 9.16 | -3.26 | b | 5.24 | b | 21.67 | 31.71 | 35.40 | 39.97 | a | 39.58 | 31.37 | 23.58 | 7.07 | -1.94 | 19.96 | ||||||||||
1957 | -0.55 | b | 8.48 | a | 11.37 | a | 23.38 | a | 31.13 | 37.37 | c | 44.58 | 42.32 | 29.20 | 26.76 | b | 8.57 | 1.69 | e | 22.02 | ||||||
1958 | -5.77 | 10.96 | a | 12.06 | 18.20 | 32.58 | 36.67 | 39.16 | 42.87 | 33.75 | b | 22.13 | a | 11.66 | a | 6.74 | 21.75 | |||||||||
1959 | 4.48 | 4.30 | a | 10.90 | 21.11 | b | 30.42 | 38.34 | a | 39.06 | 41.55 | b | 32.03 | 23.45 | b | 12.71 | b | 6.54 | e | 22.08 | ||||||
1960 | 5.55 | 1.21 | a | 18.33 | a | 23.24 | a | 28.61 | 35.10 | 40.16 | 38.27 | a | 35.33 | 22.62 | g | 12.07 | b | 0.41 | d | 21.66 | a | |||||
1961 | -6.26 | 6.57 | 14.71 | 22.73 | 30.74 | 37.33 | 41.84 | 44.45 | 29.90 | 22.16 | 10.10 | 3.20 | f | 23.12 | a | |||||||||||
1962 | -12.23 | 7.75 | 5.39 | 25.23 | 30.68 | 36.27 | 39.23 | 38.48 | 30.70 | 23.81 | 16.03 | 4.53 | a | 20.49 | ||||||||||||
1963 | -4.97 | 9.78 | a | 10.39 | 21.66 | a | 29.35 | 35.37 | c | 42.10 | 43.81 | 34.70 | 25.35 | 12.87 | 1.68 | 21.84 | ||||||||||
1964 | -5.65 | -3.11 | a | 6.43 | a | 18.77 | 27.13 | a | 34.23 | 42.93 | a | 39.61 | 31.30 | 20.48 | 14.27 | 3.14 | b | 19.13 | ||||||||
1965 | 0.81 | 0.93 | 1.14 | b | 22.30 | 28.45 | 35.69 | a | 42.42 | 37.61 | 31.97 | 22.61 | 18.00 | 4.03 | 20.50 | |||||||||||
1966 | -0.19 | 0.18 | 11.61 | 21.53 | 28.06 | 34.60 | 43.26 | 39.35 | 32.37 | 22.23 | 16.00 | -4.97 | 20.34 | |||||||||||||
1967 | 4.58 | 1.96 | 15.35 | 20.20 | 27.29 | 36.43 | 41.97 | 38.29 | 32.73 | 22.19 | 13.43 | 2.97 | 21.45 | |||||||||||||
1968 | -6.68 | 3.34 | 7.13 | 17.77 | 27.26 | 34.23 | 39.97 | 38.58 | 29.00 | 22.68 | 7.73 | 2.13 | 18.60 | |||||||||||||
1969 | 8.71 | 0.71 | 4.16 | 22.83 | 31.16 | 34.27 | 41.10 | 41.65 | 33.80 | 22.65 | 8.17 | a | 1.07 | a | 20.86 | |||||||||||
1970 | 3.74 | 5.14 | 9.90 | 16.57 | 25.19 | 34.40 | 39.29 | 41.16 | 29.60 | 18.39 | 17.40 | 3.61 | 20.37 | |||||||||||||
1971 | 10.35 | 6.64 | 11.26 | 21.10 | 28.16 | 34.40 | 39.94 | 40.32 | 29.63 | 22.35 | 9.40 | 0.48 | 21.17 | |||||||||||||
1972 | 1.33 | a | 6.69 | 18.45 | b | 21.20 | 26.10 | 35.83 | 38.19 | 37.58 | 33.13 | 27.94 | 11.63 | -3.45 | 21.22 | |||||||||||
1973 | -8.45 | -6.54 | 8.58 | 15.77 | 25.93 | a | 32.31 | a | 39.39 | 35.71 | c | 32.60 | 21.45 | 15.03 | a | 1.00 | 17.73 | |||||||||
1974 | -6.00 | -6.22 | a | 20.71 | 21.57 | 27.94 | 32.00 | l | 41.94 | 29.55 | 24.47 | 19.19 | 6.33 | -6.48 | b | 15.73 | a | |||||||||
1975 | -1.63 | a | -2.15 | b | 13.57 | c | 16.58 | d | 26.71 | c | 32.00 | a | 38.10 | 33.93 | a | 22.18 | h | 16.00 | c | 8.80 | e | 6.96 | h | 18.19 | b | |
1976 | -1.00 | i | 9.64 | d | 7.78 | h | 23.55 | h | 30.50 | k | 34.41 | h | 41.00 | j | 37.20 | f | 27.75 | f | 11.04 | g | 0.48 | i | -6.57 | c | 1.53 | j |
1977 | -6.31 | e | -1.00 | g | 2.35 | h | 15.35 | m | 20.22 | v | 30.76 | m | 34.60 | p | ----- | z | ----- | z | 20.38 | r | 15.33 | r | 7.10 | j | -6.31 | k |
1978 | 6.23 | i | 7.92 | c | ----- | z | ----- | z | 28.10 | a | 36.77 | h | 35.90 | 31.27 | a | 26.81 | c | ----- | z | 8.97 | -12.71 | g | 23.16 | f | ||
1979 | ----- | z | ----- | z | 22.30 | a | 21.71 | b | 29.14 | c | 35.18 | h | 47.05 | i | 41.71 | n | 34.13 | 27.39 | 11.03 | 3.65 | 21.34 | e | ||||
1980 | 11.13 | a | 5.96 | a | 14.83 | a | 19.73 | d | 30.00 | h | 34.07 | 42.33 | g | 37.74 | 35.97 | 21.07 | c | ----- | z | 15.90 | a | 21.82 | c | |||
1981 | 12.97 | ----- | z | 19.68 | ----- | z | ----- | z | 39.67 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.10 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -0.04 | 2.59 | 11.30 | 20.97 | 28.82 | 35.02 | 40.31 | 38.58 | 31.17 | 22.20 | 11.69 | 1.43 | 20.18 | |||||||||||||
S.D. | 7.09 | 5.40 | 5.50 | 2.64 | 1.99 | 2.08 | 2.94 | 3.67 | 3.25 | 3.01 | 3.40 | 5.17 | 1.60 | |||||||||||||
SKEW | 0.18 | -0.20 | 0.27 | -0.32 | 0.20 | -0.07 | -0.54 | -0.77 | -0.63 | 0.10 | 0.25 | 0.44 | -0.75 | |||||||||||||
MAX | 12.97 | 10.96 | 22.30 | 25.47 | 32.58 | 39.67 | 46.84 | 44.45 | 36.27 | 27.94 | 18.00 | 15.90 | 22.08 | |||||||||||||
MIN | -12.23 | -6.82 | 1.14 | 15.77 | 25.19 | 30.23 | 31.61 | 29.55 | 23.20 | 16.00 | 6.33 | -6.67 | 16.99 | |||||||||||||
YRS | 28 | 28 | 27 | 27 | 27 | 26 | 27 | 27 | 27 | 27 | 28 | 27 | 19 |