YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 | 58.19 | c | 52.81 | 41.89 | b | 32.61 | 46.37 | h | ||
1960 | 31.07 | b | 36.02 | 44.27 | 45.92 | 49.90 | 64.37 | 71.42 | 64.31 | e | 62.83 | 52.24 | 39.82 | 35.87 | 49.84 | |||||||||||
1961 | 37.62 | a | 39.93 | 40.92 | a | 47.05 | 51.13 | 66.09 | a | 69.26 | 70.83 | d | 57.67 | 50.83 | a | 38.42 | 32.52 | a | 50.19 | |||||||
1962 | 27.82 | a | 35.54 | 38.88 | a | 50.08 | 48.67 | a | 59.70 | b | 66.90 | b | 65.52 | 63.58 | 50.48 | 42.88 | 35.35 | 48.78 | ||||||||
1963 | 31.37 | 43.34 | 40.55 | 42.23 | 54.92 | a | 58.30 | 61.59 | d | 65.88 | a | 64.17 | 50.27 | 40.73 | 36.53 | a | 49.16 | |||||||||
1964 | 32.56 | 35.76 | 39.12 | b | 44.75 | 50.05 | 58.48 | 64.87 | d | 65.24 | b | 58.43 | 55.12 | a | 38.67 | d | 36.57 | b | 48.30 | |||||||
1965 | 34.24 | 38.95 | 43.15 | 47.76 | c | 52.59 | d | 60.43 | c | 67.84 | b | 66.31 | d | 58.33 | c | 55.31 | d | 42.36 | e | 32.86 | c | 50.01 | ||||
1966 | 31.48 | 34.91 | 41.93 | a | 50.33 | c | 57.97 | a | 60.12 | d | 64.33 | b | 68.72 | a | 62.15 | 51.70 | a | 42.50 | 36.18 | 50.19 | ||||||
1967 | 34.55 | a | 39.12 | 39.55 | b | 38.94 | d | 55.05 | b | 61.43 | 70.45 | a | 72.62 | b | 66.17 | c | 50.39 | 44.12 | 27.54 | c | 49.99 | |||||
1968 | 31.65 | a | 42.80 | b | 43.43 | a | 45.61 | b | 52.08 | a | 61.85 | 71.37 | 63.53 | b | 61.22 | c | 50.32 | 40.27 | 30.15 | 49.52 | ||||||
1969 | 28.27 | 33.14 | 40.22 | a | 46.00 | 56.40 | a | 63.52 | c | ----- | z | 66.10 | b | 62.30 | 46.44 | 42.27 | 37.32 | 47.45 | a | |||||||
1970 | 37.08 | 40.50 | a | 41.82 | a | 42.05 | a | 54.55 | a | 65.31 | a | 70.78 | a | 69.58 | 57.79 | b | 49.38 | b | 42.88 | a | 31.66 | 50.28 | ||||
1971 | 32.57 | c | 36.33 | a | 37.56 | 44.15 | 52.53 | 57.93 | 68.82 | 71.23 | 59.18 | 47.50 | 40.23 | 31.32 | 48.28 | |||||||||||
1972 | 31.13 | 37.07 | 46.11 | 45.92 | 55.71 | 63.10 | 70.94 | 69.11 | 58.70 | 51.18 | 39.73 | 27.39 | 49.67 | |||||||||||||
1973 | 31.81 | 40.30 | 40.06 | 47.28 | 59.18 | 61.97 | 70.11 | 67.71 | 59.78 | 49.39 | 39.55 | 36.52 | a | 50.31 | ||||||||||||
1974 | 28.42 | a | 31.61 | i | 37.96 | h | 41.50 | e | ----- | z | ----- | z | 65.57 | j | 69.02 | e | 66.52 | f | 52.97 | p | 42.06 | e | 35.73 | a | 43.35 | g |
1975 | 30.47 | b | 34.93 | 39.16 | 41.32 | 55.32 | 60.32 | 68.55 | b | 64.58 | 65.73 | 50.74 | 39.50 | 37.73 | 49.03 | |||||||||||
1976 | 36.95 | 38.05 | 40.97 | 45.02 | 55.93 | c | 59.22 | 70.35 | 65.60 | 65.06 | e | 53.95 | 45.20 | 35.62 | a | 50.99 | ||||||||||
1977 | 29.23 | 41.26 | a | 41.06 | 50.14 | b | 48.57 | b | 66.82 | 69.48 | a | 72.11 | 61.93 | a | 52.92 | 40.87 | c | 37.85 | a | 51.02 | ||||||
1978 | 39.00 | b | 40.78 | a | 47.66 | 45.57 | 53.50 | a | 63.28 | 69.15 | 67.65 | 57.48 | 57.03 | ----- | z | 31.84 | 52.08 | a | ||||||||
1979 | 33.35 | 38.46 | 46.77 | 48.42 | 59.30 | a | 64.13 | 72.03 | 65.58 | 63.97 | 53.10 | 37.15 | 37.05 | 51.61 | ||||||||||||
1980 | 35.81 | 42.18 | d | 41.24 | 49.35 | 54.63 | 58.22 | a | 71.47 | 65.38 | a | 64.23 | 57.27 | 42.88 | 38.25 | a | 51.74 | |||||||||
1981 | 40.56 | 40.84 | 44.39 | 51.43 | 54.77 | a | 63.03 | 69.61 | 72.10 | 64.20 | 49.45 | a | 43.80 | 39.17 | a | 52.78 | ||||||||||
1982 | 29.88 | g | 38.55 | g | 40.96 | g | 44.98 | e | 55.12 | j | 61.70 | h | 64.88 | g | 69.46 | c | 57.02 | i | 53.83 | e | 40.40 | d | 34.15 | h | 52.17 | h |
1983 | 37.86 | c | 41.52 | f | 44.32 | 45.10 | e | 57.80 | h | 60.02 | g | 63.82 | f | 69.33 | h | 60.55 | h | 53.65 | e | 40.90 | d | ----- | z | 44.37 | g | |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.21 | d | 71.67 | e | 73.00 | f | 64.89 | k | 51.84 | i | 42.83 | g | 36.29 | c | 56.06 | i |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 33.26 | 38.58 | 41.96 | 45.87 | 53.94 | 61.72 | 69.10 | 67.75 | 61.50 | 51.89 | 41.21 | 34.58 | 50.09 | |||||||||||||
S.D. | 3.62 | 2.89 | 2.72 | 3.19 | 3.12 | 2.65 | 2.70 | 2.76 | 2.92 | 2.73 | 1.96 | 3.29 | 1.17 | |||||||||||||
SKEW | 0.36 | -0.12 | 0.53 | -0.19 | -0.11 | 0.27 | -1.35 | 0.33 | -0.00 | 0.18 | 0.01 | -0.78 | 0.46 | |||||||||||||
MAX | 40.56 | 43.34 | 47.66 | 51.43 | 59.30 | 66.82 | 72.03 | 72.62 | 66.17 | 57.27 | 45.20 | 39.17 | 52.78 | |||||||||||||
MIN | 27.82 | 33.14 | 37.56 | 38.94 | 48.57 | 57.93 | 61.59 | 63.53 | 57.48 | 46.44 | 37.15 | 27.39 | 48.28 | |||||||||||||
YRS | 23 | 21 | 22 | 24 | 21 | 22 | 21 | 23 | 22 | 24 | 24 | 24 | 19 |