YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.85 | 85.95 | 81.80 | 71.15 | 57.91 | a | 49.11 | 72.13 | f | |||||
1949 | 41.31 | 49.73 | 58.89 | 69.37 | 74.70 | c | 85.33 | 90.92 | 86.63 | 85.33 | a | 71.08 | 65.37 | 52.42 | 69.26 | |||||||||||
1950 | 48.79 | 58.34 | 62.97 | 73.10 | 76.13 | 82.78 | 90.69 | 88.12 | a | 80.75 | 74.16 | 63.48 | 57.98 | 71.44 | ||||||||||||
1951 | 51.55 | 55.09 | 61.11 | 68.93 | 75.50 | 81.37 | 90.53 | 86.94 | 82.22 | 70.81 | 58.40 | 49.11 | 69.30 | |||||||||||||
1952 | 48.89 | 55.00 | 55.50 | 69.32 | 78.97 | 80.45 | 88.47 | 91.29 | 84.70 | 75.50 | 58.32 | 52.84 | 69.94 | |||||||||||||
1953 | 57.42 | 55.79 | 62.29 | 68.02 | 71.06 | 81.78 | 92.40 | 88.02 | 83.13 | 71.85 | 61.85 | 52.92 | 70.54 | |||||||||||||
1954 | 50.82 | 62.77 | 58.35 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.32 | i | |||
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 | 57.44 | 60.00 | 58.94 | 69.80 | 83.66 | 88.85 | 92.69 | 96.24 | 87.75 | 77.82 | 62.38 | 59.16 | b | 74.56 | ||||||||||||
1959 | 56.63 | 55.64 | 65.65 | 74.95 | a | 78.48 | b | 91.45 | 97.56 | 92.29 | 83.32 | 74.38 | c | 62.31 | c | 54.73 | a | 73.95 | ||||||||
1960 | 48.52 | a | 52.60 | c | 65.10 | 71.28 | a | 78.33 | b | 92.60 | a | 96.19 | b | 94.06 | 87.38 | b | 73.39 | 61.55 | b | 53.31 | d | 72.86 | ||||
1961 | 55.20 | c | 56.69 | b | 62.15 | 71.14 | a | 78.00 | b | ----- | z | 97.88 | c | 93.65 | e | 82.26 | c | 72.98 | b | 58.61 | c | 50.75 | c | 70.85 | a | |
1962 | 52.05 | a | 57.15 | b | 57.76 | 75.59 | a | 76.47 | b | 87.60 | a | 94.93 | a | 95.11 | c | 88.54 | b | 75.12 | a | 64.92 | e | 57.70 | d | 73.58 | ||
1963 | 49.12 | c | 61.60 | b | 61.52 | 66.95 | 80.63 | a | 84.60 | a | 94.41 | d | 93.95 | a | 86.87 | c | 77.38 | b | 61.98 | g | 54.33 | b | 73.76 | a | ||
1964 | 49.82 | 52.83 | b | 57.65 | a | 67.48 | 75.93 | b | 86.39 | b | 95.16 | b | 93.23 | e | 85.02 | e | 79.30 | d | 58.24 | e | 53.41 | d | 71.21 | |||
1965 | 54.52 | f | 56.04 | d | 59.54 | c | 65.89 | b | 75.40 | f | 82.09 | c | 93.50 | c | 91.96 | f | 80.46 | d | 76.48 | c | 63.66 | e | 53.19 | e | 70.10 | c |
1966 | 49.67 | b | 51.59 | e | 62.59 | d | 72.52 | 82.04 | f | 87.94 | e | 93.76 | f | 95.22 | d | 87.21 | f | 72.24 | d | 62.69 | f | 55.04 | f | 70.25 | e | |
1967 | 53.27 | e | 57.78 | e | 64.79 | e | 63.00 | d | 77.79 | e | 84.83 | d | 95.87 | h | 95.52 | d | 87.04 | d | 76.83 | e | 63.85 | f | 49.30 | f | 73.43 | c |
1968 | 52.90 | e | 61.77 | e | 63.38 | e | 67.64 | e | 77.90 | f | 89.26 | g | 93.65 | e | 89.33 | g | 85.98 | i | 73.33 | d | 62.30 | g | 48.79 | g | 68.78 | f |
1969 | 55.68 | c | 53.82 | c | 59.65 | g | 71.96 | f | 80.78 | h | 87.45 | 95.27 | i | 97.98 | 88.90 | d | 73.80 | k | 65.00 | j | 55.93 | j | 76.77 | g | ||
1970 | 51.81 | d | 59.22 | c | 61.60 | a | 65.24 | a | 79.66 | c | 89.50 | c | 96.07 | c | 94.32 | a | 83.63 | 70.12 | a | 61.22 | a | 50.62 | a | 71.92 | ||
1971 | 52.92 | 56.87 | a | 61.97 | 68.07 | 72.58 | 87.20 | b | 96.02 | 93.02 | 83.75 | 68.90 | 58.62 | 48.91 | b | 70.73 | ||||||||||
1972 | 49.90 | a | 58.71 | a | 69.35 | 70.04 | b | 79.27 | a | 88.98 | a | 96.05 | 91.83 | a | 82.40 | f | 70.32 | i | 56.67 | f | 48.05 | j | 75.52 | d | ||
1973 | 48.18 | f | 54.38 | g | 56.98 | d | 67.95 | j | 82.20 | h | 88.42 | f | 95.36 | i | 92.81 | d | 82.57 | h | 72.26 | l | 59.65 | g | 55.38 | k | 74.90 | j |
1974 | 48.38 | e | 53.79 | g | 64.26 | f | 68.93 | h | 79.68 | f | 92.45 | 93.72 | a | 90.53 | a | 87.32 | b | 75.05 | a | 60.37 | 50.35 | a | 74.77 | d | ||
1975 | 51.29 | 53.48 | 59.06 | 62.82 | 76.40 | 87.50 | 94.92 | 91.97 | a | 87.80 | 72.65 | a | 63.94 | n | 55.77 | a | 72.15 | a | ||||||||
1976 | 54.23 | 58.69 | 60.43 | a | 66.70 | 81.73 | 86.80 | 95.00 | 90.44 | 82.58 | 72.19 | 61.97 | 52.97 | 71.98 | ||||||||||||
1977 | 51.26 | 59.55 | 58.06 | 72.22 | 72.84 | 90.50 | 94.21 | x | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.41 | f | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 51.62 | 56.70 | 61.07 | 69.09 | 77.27 | 86.75 | 93.70 | 92.14 | 84.79 | 73.76 | 61.13 | 53.14 | 71.64 | |||||||||||||
S.D. | 3.57 | 3.34 | 3.22 | 3.40 | 3.18 | 3.55 | 2.88 | 3.25 | 2.65 | 2.71 | 2.45 | 3.00 | 1.72 | |||||||||||||
SKEW | -0.57 | -0.12 | 0.55 | 0.04 | -0.07 | -0.13 | -0.75 | -0.40 | 0.01 | 0.25 | 0.14 | 0.41 | 0.23 | |||||||||||||
MAX | 57.44 | 62.77 | 69.35 | 75.59 | 83.66 | 92.60 | 97.88 | 97.98 | 88.90 | 79.30 | 65.37 | 59.16 | 74.56 | |||||||||||||
MIN | 41.31 | 49.73 | 55.50 | 62.82 | 71.06 | 80.45 | 86.85 | 85.95 | 80.46 | 68.90 | 57.91 | 48.91 | 69.26 | |||||||||||||
YRS | 24 | 24 | 24 | 22 | 19 | 22 | 21 | 23 | 21 | 22 | 17 | 19 | 13 |