YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1947 | ----- | z | ----- | z | ----- | z | ----- | z | 60.84 | 70.10 | 81.65 | 80.37 | a | 61.07 | 60.47 | a | 26.83 | a | 20.30 | a | 57.70 | d | ||||
1948 | 15.66 | b | 13.31 | 26.32 | c | 44.43 | 68.17 | a | 73.83 | 78.42 | 78.90 | 76.17 | 59.03 | b | 33.61 | b | 14.58 | 48.54 | ||||||||
1949 | 11.23 | a | 7.18 | 26.29 | 52.63 | 66.32 | 72.87 | 79.65 | 83.58 | 68.10 | 51.03 | 40.90 | 11.00 | a | 47.57 | |||||||||||
1950 | -9.16 | 12.36 | 24.45 | 36.60 | 54.32 | 72.00 | 74.52 | 74.58 | 69.62 | a | 55.26 | 26.31 | a | 12.58 | 41.95 | |||||||||||
1951 | 6.87 | 15.07 | 21.32 | 47.23 | 70.73 | a | 69.23 | 81.55 | 72.16 | 61.23 | 50.60 | a | 26.83 | 9.77 | 44.38 | |||||||||||
1952 | 7.94 | 24.14 | 26.19 | 63.03 | 68.97 | 75.43 | 79.84 | 78.29 | 73.63 | 53.77 | 38.89 | b | 22.61 | 51.06 | ||||||||||||
1953 | 15.03 | 22.07 | 31.10 | 44.27 | 61.87 | 70.97 | 76.97 | 80.39 | 66.60 | 62.65 | 41.23 | 23.71 | 49.74 | |||||||||||||
1954 | 2.68 | 32.32 | 31.42 | e | 48.90 | 60.90 | 71.27 | 78.84 | 74.71 | 63.03 | 53.26 | 41.40 | 26.68 | 48.78 | ||||||||||||
1955 | 14.03 | 13.29 | 22.00 | 56.57 | 66.58 | 71.63 | 79.48 | d | 79.61 | 64.93 | 56.00 | a | 21.03 | 8.42 | 46.13 | |||||||||||
1956 | 10.23 | 11.29 | a | 23.42 | 36.17 | 61.55 | 76.10 | 74.32 | 75.87 | 62.17 | 59.13 | 33.10 | 18.71 | 45.17 | ||||||||||||
1957 | 4.65 | 14.11 | 29.32 | 46.23 | 68.39 | 71.73 | 83.77 | 74.90 | 64.50 | 53.03 | 34.00 | 27.52 | 47.68 | |||||||||||||
1958 | 23.48 | 18.70 | a | 36.50 | a | 56.37 | 71.94 | 72.50 | 76.42 | 79.65 | 69.93 | 59.68 | 34.21 | a | 15.03 | 51.20 | ||||||||||
1959 | 7.03 | 15.00 | 37.87 | 52.47 | 62.29 | 77.23 | 83.39 | 81.94 | 66.93 | a | 42.61 | 25.40 | 27.65 | 48.32 | ||||||||||||
1960 | 12.65 | 17.59 | 21.48 | 46.80 | 67.23 | 72.77 | 85.29 | 81.06 | 73.33 | 57.71 | 34.67 | 20.03 | 49.22 | |||||||||||||
1961 | 15.87 | 23.21 | 36.52 | 46.67 | 66.77 | 83.27 | 80.58 | 88.16 | 64.20 | 56.45 | 36.30 | 11.84 | 50.82 | |||||||||||||
1962 | 10.94 | 10.57 | 25.13 | 47.63 | 59.58 | 73.57 | 75.97 | 79.39 | 66.90 | 59.97 | 38.97 | 21.61 | 47.52 | |||||||||||||
1963 | 7.70 | a | 18.57 | 41.71 | 51.43 | 64.81 | 75.63 | 81.32 | 80.00 | 74.60 | 68.32 | 40.53 | 14.42 | 51.59 | ||||||||||||
1964 | 19.10 | 25.76 | 27.45 | 53.03 | 69.10 | 72.48 | a | 81.19 | 71.74 | 63.17 | 55.65 | 31.33 | 6.33 | a | 48.03 | |||||||||||
1965 | 5.68 | 16.68 | 22.00 | 45.83 | 63.10 | 71.20 | 76.03 | 76.71 | 55.13 | 58.03 | 30.27 | 25.19 | 45.49 | |||||||||||||
1966 | -1.19 | 12.25 | 34.00 | q | 41.33 | 60.94 | 73.40 | 80.61 | 75.19 | 72.00 | 56.77 | a | 26.57 | 18.58 | 46.95 | a | ||||||||||
1967 | 16.40 | a | 13.61 | 31.65 | 44.77 | 60.29 | 73.23 | 80.58 | 80.68 | 75.92 | e | ----- | z | 21.33 | x | 20.19 | 49.73 | b | ||||||||
1968 | 11.10 | a | 15.59 | 41.07 | a | 53.86 | b | 63.26 | 75.20 | 80.57 | a | 73.16 | 67.60 | 55.00 | 34.31 | d | 13.97 | 48.72 | ||||||||
1969 | 3.26 | 14.83 | e | 18.71 | 52.40 | 67.94 | 67.93 | 76.31 | e | 84.81 | 70.59 | a | 45.97 | 34.00 | g | 21.45 | 47.65 | a | ||||||||
1970 | 4.87 | 20.28 | c | 33.47 | n | 40.67 | f | 59.78 | h | 79.04 | c | 82.08 | f | 84.07 | p | 62.67 | o | 53.86 | i | 30.35 | d | 13.77 | i | 33.63 | h | |
1971 | 1.08 | g | 22.00 | 29.58 | ----- | z | ----- | z | 74.75 | j | 75.14 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.79 | j | ||
1972 | 3.92 | s | 9.53 | n | 32.63 | l | 48.29 | f | 70.94 | m | 72.62 | q | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | 17.86 | b | 21.89 | 39.61 | 49.20 | e | 66.47 | a | 74.53 | 79.19 | 82.19 | 64.65 | d | 58.77 | a | 27.13 | 13.94 | 49.62 | ||||||||
1974 | 5.32 | 14.68 | 22.81 | 44.53 | 56.32 | 74.97 | 83.62 | b | 73.33 | d | 64.47 | 54.36 | i | 34.43 | 24.26 | 45.34 | a | |||||||||
1975 | 16.38 | b | 13.61 | 21.84 | l | 41.00 | 66.60 | a | 74.38 | d | 83.74 | d | 75.74 | d | 67.17 | a | 55.40 | a | 37.17 | 20.34 | b | 50.14 | a | |||
1976 | 15.59 | d | 26.03 | 27.63 | a | 57.00 | b | 71.74 | 76.97 | 81.43 | c | 82.23 | 75.30 | 53.07 | d | 34.72 | a | 15.10 | a | 51.40 | ||||||
1977 | 2.89 | c | 25.08 | b | 40.77 | a | 64.68 | k | 79.68 | 75.81 | c | 81.19 | 73.16 | 62.96 | d | 59.73 | a | 33.00 | a | 9.00 | a | 49.39 | a | |||
1978 | 1.75 | w | 10.61 | ----- | z | 49.45 | a | 72.57 | a | 78.26 | g | 79.89 | c | 81.74 | 73.38 | a | 57.48 | b | 29.43 | 12.79 | c | 51.93 | c | |||
1979 | 1.68 | 3.52 | c | 26.14 | b | 36.75 | b | 57.29 | c | 74.67 | c | 79.71 | c | 75.31 | b | 71.50 | h | 54.25 | c | 32.86 | a | 25.88 | g | 44.22 | b | |
1980 | 10.76 | b | 16.50 | g | 26.77 | 61.67 | 75.03 | 77.61 | b | 81.22 | d | 72.63 | a | 63.83 | 49.77 | a | 40.54 | d | 20.50 | c | 52.76 | a | ||||
1981 | 23.46 | g | 25.26 | a | 40.89 | c | 56.68 | b | 65.07 | a | 70.48 | c | 79.41 | d | 81.22 | d | 68.64 | b | 51.11 | c | 45.96 | d | 17.48 | f | 58.47 | b |
1982 | -0.33 | d | 15.38 | d | 27.58 | l | 48.88 | f | 62.27 | i | 64.60 | t | 79.07 | c | 76.17 | b | 68.27 | 50.90 | b | 35.82 | m | 34.57 | x | 48.24 | f | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 9.23 | 17.15 | 29.52 | 48.83 | 65.52 | 73.81 | 79.87 | 78.17 | 67.50 | 55.51 | 33.62 | 17.60 | 48.23 | |||||||||||||
S.D. | 7.03 | 6.19 | 6.98 | 6.90 | 5.56 | 3.07 | 2.69 | 4.06 | 5.04 | 4.99 | 5.80 | 6.00 | 2.52 | |||||||||||||
SKEW | -0.32 | 0.27 | 0.47 | 0.04 | 0.25 | 0.76 | -0.26 | 0.26 | -0.04 | -0.18 | -0.03 | -0.03 | -0.71 | |||||||||||||
MAX | 23.48 | 32.32 | 41.71 | 63.03 | 79.68 | 83.27 | 85.29 | 88.16 | 76.17 | 68.32 | 45.96 | 27.65 | 51.59 | |||||||||||||
MIN | -9.16 | 3.52 | 18.71 | 36.17 | 54.32 | 67.93 | 74.32 | 71.74 | 55.13 | 42.61 | 21.03 | 6.33 | 41.95 | |||||||||||||
YRS | 31 | 33 | 29 | 30 | 32 | 32 | 33 | 33 | 32 | 31 | 31 | 30 | 21 |