YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.67 | a | 62.76 | 63.08 | 52.85 | 45.73 | 31.67 | 12.55 | 47.19 | e | ||||||
1963 | -1.37 | a | 5.23 | 27.32 | 41.75 | 49.45 | 63.38 | 67.60 | 63.65 | 57.50 | 54.29 | 32.95 | a | 6.13 | 38.99 | |||||||||||
1964 | 13.88 | a | 15.28 | 19.21 | 39.65 | 56.31 | 60.60 | 69.16 | 60.16 | 52.05 | 43.50 | 29.21 | a | 6.52 | 38.79 | |||||||||||
1965 | 2.63 | 4.36 | 15.02 | 38.66 | a | 52.35 | 59.17 | 63.55 | 62.00 | 46.33 | a | 43.10 | a | 24.82 | 19.06 | 35.92 | ||||||||||
1966 | -4.89 | 9.89 | 27.28 | a | 34.38 | 47.55 | 62.40 | 69.85 | a | 62.58 | 55.05 | 42.52 | a | 22.32 | 11.17 | a | 36.68 | |||||||||
1967 | 7.71 | 1.91 | 23.32 | 37.10 | a | 46.65 | 60.70 | 64.61 | 62.26 | 56.77 | 41.52 | a | 24.65 | 13.23 | a | 36.70 | ||||||||||
1968 | 7.13 | 7.33 | 30.37 | 40.12 | 49.18 | 60.20 | 64.60 | 62.79 | 56.15 | 45.71 | 27.97 | 9.19 | 38.39 | |||||||||||||
1969 | 5.06 | 14.07 | 20.94 | 42.80 | 51.97 | 53.41 | a | 65.68 | 68.48 | 55.90 | 39.00 | 27.02 | 17.44 | 38.48 | ||||||||||||
1970 | 1.94 | 8.82 | 19.85 | 37.52 | 48.13 | 62.86 | a | 68.92 | 65.63 | 55.43 | 43.84 | 25.92 | 8.74 | 37.30 | ||||||||||||
1971 | -1.77 | a | 12.32 | 22.47 | a | 38.85 | 49.60 | 65.15 | 62.68 | 62.81 | 56.45 | 47.03 | 25.88 | 11.23 | 37.72 | |||||||||||
1972 | -1.97 | 5.53 | 19.84 | 35.75 | 57.60 | 62.03 | 63.58 | 64.03 | 50.78 | 39.19 | 24.83 | 4.26 | 35.46 | |||||||||||||
1973 | 11.34 | 12.93 | 33.97 | 39.02 | a | 50.40 | 61.47 | 65.74 | 66.23 | 53.50 | 47.81 | 26.52 | 10.79 | 39.98 | ||||||||||||
1974 | 3.68 | 11.29 | 20.13 | 39.00 | 47.44 | 60.83 | 68.87 | 61.66 | 48.92 | 43.60 | 27.93 | 18.71 | 37.67 | |||||||||||||
1975 | 7.77 | 11.46 | 18.32 | 33.48 | 55.89 | 60.90 | 70.26 | f | 63.05 | k | 51.17 | j | 45.31 | j | 32.06 | m | 9.00 | o | 31.31 | f | ||||||
1976 | -0.14 | m | 20.48 | i | 22.22 | h | 45.56 | m | 52.40 | k | 63.38 | j | 64.89 | m | 66.39 | i | 52.17 | l | 33.89 | m | 21.98 | i | 1.50 | o | ----- | z |
1977 | 0.41 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.90 | o | 43.76 | j | 28.71 | k | 11.92 | s | ----- | z |
1978 | -0.03 | n | 5.76 | i | 20.30 | k | 38.61 | k | 54.79 | j | 58.07 | i | 62.54 | d | 60.42 | k | 52.47 | m | 41.47 | n | 21.83 | l | 6.31 | o | 62.54 | k |
1979 | -7.95 | j | 3.12 | k | 19.16 | l | 32.05 | i | 44.02 | i | 55.71 | i | 62.72 | o | 56.50 | h | 49.47 | o | 37.89 | m | 24.30 | j | 19.40 | p | ----- | z |
1980 | 3.79 | j | ----- | z | ----- | z | 49.75 | r | 56.35 | k | 61.19 | i | 65.94 | n | 62.87 | l | 49.68 | k | 38.58 | k | 26.05 | k | 6.53 | m | ----- | z |
1981 | 9.24 | l | 10.41 | l | 25.15 | k | 39.07 | i | 49.91 | o | 56.05 | j | 64.57 | i | 65.83 | k | 52.79 | k | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 3.93 | 9.26 | 22.93 | 38.31 | 50.96 | 61.06 | 65.72 | 63.49 | 53.67 | 44.37 | 27.05 | 11.46 | 37.67 | |||||||||||||
S.D. | 5.58 | 4.12 | 5.36 | 2.67 | 3.63 | 2.66 | 2.67 | 2.19 | 3.37 | 3.99 | 2.94 | 4.73 | 1.33 | |||||||||||||
SKEW | 0.15 | -0.27 | 0.67 | -0.24 | 0.67 | -1.54 | 0.30 | 0.87 | -0.88 | 0.97 | 0.58 | 0.30 | -0.06 | |||||||||||||
MAX | 13.88 | 15.28 | 33.97 | 42.80 | 57.60 | 65.15 | 69.85 | 68.48 | 57.50 | 54.29 | 32.95 | 19.06 | 39.98 | |||||||||||||
MIN | -4.89 | 1.91 | 15.02 | 33.48 | 46.65 | 53.41 | 62.54 | 60.16 | 46.33 | 39.00 | 22.32 | 4.26 | 35.46 | |||||||||||||
YRS | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 12 |