YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1922 | ----- | z | ----- | z | 64.25 | q | 65.33 | 77.34 | c | 84.59 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.75 | i | |
1923 | 51.06 | v | ----- | z | ----- | z | 69.85 | f | 80.78 | f | 81.13 | 91.15 | d | 89.22 | b | 82.42 | 69.08 | a | 60.44 | d | ----- | z | 78.91 | f | ||
1924 | 50.73 | 57.60 | 57.45 | ----- | z | 78.10 | ----- | z | 91.02 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.97 | h | ||||
1925 | ----- | z | ----- | z | 64.06 | m | 67.57 | 77.02 | 82.52 | 91.32 | a | 89.31 | 80.48 | a | 68.22 | d | 55.16 | a | 51.94 | 73.72 | c | |||||
1926 | 47.71 | 56.38 | 62.90 | b | 68.98 | 74.22 | a | 83.43 | 88.78 | b | 88.60 | a | 83.57 | 72.50 | a | 60.24 | a | 50.92 | 69.85 | |||||||
1927 | 54.06 | 58.94 | a | 59.83 | b | 66.72 | 74.58 | 81.73 | 90.02 | 88.87 | 82.07 | 69.89 | 61.75 | 49.66 | 69.84 | |||||||||||
1928 | 51.72 | a | 54.47 | 61.95 | 65.97 | 75.98 | 82.69 | c | 89.30 | a | 89.44 | d | 83.98 | a | 70.56 | 58.78 | a | 50.55 | b | 69.62 | ||||||
1929 | 48.71 | g | 52.86 | c | 60.40 | b | 64.54 | d | 75.00 | b | 82.72 | a | 91.24 | 91.03 | b | 83.11 | b | 73.08 | a | 56.12 | a | 53.82 | 71.27 | a | ||
1930 | 51.60 | a | 60.74 | a | 60.95 | 67.65 | d | 68.41 | d | 82.33 | d | 89.57 | d | 89.98 | c | 81.75 | b | 68.63 | 61.31 | a | 48.40 | 69.28 | ||||
1931 | 51.16 | 58.13 | a | 63.00 | a | 70.92 | 77.95 | b | 84.63 | 94.98 | a | 89.89 | d | 84.04 | c | 71.90 | b | 58.07 | c | 49.83 | a | 71.21 | ||||
1932 | 48.58 | a | 55.87 | b | 63.00 | c | 67.83 | g | 75.59 | c | 83.57 | a | 91.53 | b | 92.00 | a | 86.00 | a | 70.69 | e | 60.93 | b | ----- | z | 72.78 | b |
1933 | 48.90 | b | 50.20 | 62.33 | a | 64.47 | a | 70.72 | b | 84.77 | b | 94.70 | i | 91.81 | g | 87.90 | 76.50 | d | 61.40 | e | 53.04 | d | 66.02 | b | ||
1934 | 53.11 | c | 60.27 | b | 69.66 | b | 74.09 | b | 80.70 | d | 77.00 | s | 93.40 | k | 92.40 | j | 83.86 | b | 73.81 | 59.85 | d | 54.71 | c | 67.78 | c | |
1935 | 52.94 | d | 58.90 | b | 59.69 | d | 68.63 | d | 72.39 | d | 86.13 | g | 90.63 | a | 90.84 | l | 86.08 | e | 71.89 | c | 54.33 | f | 53.02 | f | 70.15 | d |
1936 | 51.54 | d | 56.92 | d | 64.24 | h | 72.67 | f | 79.40 | e | 87.66 | b | 93.64 | c | 92.93 | a | 84.75 | b | 73.08 | e | 60.24 | c | 52.93 | d | 73.31 | b |
1937 | 43.38 | a | 55.57 | a | 60.72 | b | 68.59 | a | 76.43 | b | 84.96 | c | 93.65 | e | 93.91 | b | 89.15 | 74.61 | d | 61.09 | g | 57.14 | b | 72.56 | a | |
1938 | 53.96 | d | 56.77 | b | 61.83 | d | 69.23 | 77.06 | e | 84.31 | a | 91.60 | 90.76 | 86.87 | c | 70.62 | e | 53.73 | b | 53.41 | c | 70.85 | ||||
1939 | 51.84 | 50.04 | b | 62.09 | c | 72.11 | g | 78.25 | c | 85.04 | b | 93.11 | d | 93.48 | d | 83.31 | c | 68.54 | d | 61.78 | a | 54.93 | a | 71.13 | a | |
1940 | 54.77 | a | 57.25 | c | 65.07 | b | 71.20 | e | 80.71 | c | 87.85 | 90.93 | d | 92.52 | a | 84.47 | a | 72.92 | a | 56.29 | a | 55.60 | a | 72.46 | ||
1941 | 53.37 | a | 59.46 | a | 61.48 | a | 64.74 | a | 77.28 | b | 81.23 | b | 91.50 | a | 88.21 | e | 77.78 | c | 68.29 | c | 59.18 | b | 53.05 | b | 69.63 | |
1942 | 51.96 | c | 52.52 | b | 59.17 | b | 66.70 | b | 75.41 | h | 83.04 | f | 93.88 | a | 93.18 | l | 82.60 | e | 72.93 | b | 59.96 | c | 54.00 | l | 67.47 | d |
1943 | 53.24 | f | 57.87 | b | 65.05 | c | 71.50 | d | 77.14 | b | 82.12 | a | 90.86 | c | 89.98 | b | 87.20 | b | 73.30 | a | 57.50 | a | 52.55 | 73.19 | a | |
1944 | 50.18 | a | 52.88 | a | 60.73 | c | 65.96 | d | 74.21 | c | 79.18 | 86.61 | m | 92.76 | d | 89.04 | f | 78.62 | a | 58.63 | d | 51.48 | 66.46 | b | ||
1945 | 50.29 | c | 54.76 | i | 57.52 | c | 68.44 | n | 75.86 | x | 80.35 | f | 92.46 | e | 93.97 | a | 84.95 | s | 74.19 | g | 58.48 | j | 48.39 | c | 68.52 | g |
1946 | 51.98 | h | 52.29 | 60.89 | d | 71.33 | c | 76.07 | h | 84.73 | d | 91.24 | d | 92.80 | h | 85.43 | 67.29 | 55.11 | b | 53.37 | d | 69.08 | c | |||
1947 | 48.52 | 59.21 | 62.32 | a | 69.75 | 79.16 | 83.33 | 93.00 | b | 88.77 | 86.88 | b | 72.65 | d | 58.67 | 49.63 | a | 70.99 | ||||||||
1948 | 54.03 | b | 54.89 | b | 57.74 | 69.70 | 74.82 | 81.73 | 89.97 | 91.55 | a | 85.40 | d | 73.05 | a | 54.78 | 49.60 | a | 69.77 | |||||||
1949 | 43.53 | b | 51.67 | b | 60.04 | c | 71.04 | b | 74.32 | 85.18 | b | 89.65 | n | 89.33 | m | ----- | z | ----- | z | ----- | z | ----- | z | 64.30 | f | |
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 | 58.43 | a | 50.70 | a | 54.57 | j |
1952 | 49.11 | 53.95 | 57.98 | d | 69.70 | c | 81.73 | 83.48 | 92.18 | 92.97 | 87.27 | 77.90 | a | 56.35 | 50.71 | 71.11 | ||||||||||
1953 | 55.88 | a | 54.57 | 61.76 | 67.10 | 70.55 | 83.55 | 92.69 | b | 89.63 | 83.33 | 71.08 | 61.00 | 49.23 | 70.03 | |||||||||||
1954 | 51.21 | 60.93 | 59.18 | a | 71.18 | 77.92 | 83.77 | 93.43 | a | 87.40 | 84.50 | b | 73.73 | 61.70 | 52.05 | b | 71.42 | |||||||||
1955 | 48.42 | 51.52 | 60.81 | 65.08 | 72.94 | 81.77 | 86.87 | 89.11 | 83.87 | 75.08 | 58.27 | b | 53.79 | 68.96 | ||||||||||||
1956 | 53.79 | c | 50.28 | 60.86 | b | 65.67 | 75.40 | 84.83 | 89.27 | c | 85.72 | h | 86.90 | 70.74 | d | 56.30 | 51.05 | 67.73 | a | |||||||
1957 | 52.76 | 60.98 | 62.54 | c | 66.67 | 70.98 | 85.07 | c | 92.04 | d | 88.70 | h | 83.05 | 70.27 | 56.07 | 52.92 | 68.49 | a | ||||||||
1958 | 52.40 | 58.71 | 58.76 | b | 68.27 | 80.82 | 84.54 | b | 88.53 | a | 90.23 | e | 83.78 | a | 74.79 | b | 58.98 | 54.11 | 71.16 | |||||||
1959 | 53.71 | 54.20 | 62.77 | 72.32 | b | 73.69 | 86.12 | b | 91.88 | b | 87.95 | a | 79.08 | f | 71.81 | 60.60 | a | 52.08 | 69.74 | a | ||||||
1960 | 48.25 | a | 53.69 | 65.17 | d | 69.91 | b | 75.82 | 88.00 | 90.78 | b | 88.47 | 84.05 | 71.15 | 58.88 | 49.60 | 70.31 | |||||||||
1961 | 53.53 | 57.41 | 61.55 | b | 69.55 | 74.72 | b | 86.86 | a | 90.07 | b | 87.65 | a | 79.47 | 68.32 | 56.14 | e | 50.77 | 69.67 | |||||||
1962 | 51.82 | 55.98 | a | 56.90 | a | 72.50 | a | 73.04 | d | 81.22 | c | 87.71 | c | 90.19 | e | 84.43 | 71.35 | 62.10 | 53.98 | 70.10 | ||||||
1963 | 47.66 | 62.00 | 59.62 | c | 64.50 | a | 77.89 | 79.08 | f | 89.55 | 88.02 | a | 85.21 | d | 73.84 | b | 60.25 | 50.52 | b | 69.01 | a | |||||
1964 | 46.73 | c | 51.14 | a | 57.61 | 66.46 | b | 73.23 | c | 81.75 | d | 90.42 | 88.05 | b | 81.55 | 76.26 | 54.98 | b | 52.23 | 68.37 | ||||||
1965 | 53.08 | 55.39 | 57.90 | f | 67.53 | 72.62 | b | 77.30 | b | 89.56 | 90.76 | 80.10 | 73.21 | 62.37 | 51.69 | 70.33 | a | |||||||||
1966 | 48.44 | 51.10 | b | 62.40 | 70.27 | b | 78.13 | a | 83.58 | 91.63 | h | 92.02 | c | 83.93 | 71.08 | 61.15 | 52.76 | 68.62 | a | |||||||
1967 | 50.22 | b | 56.08 | b | 62.60 | 61.68 | 74.06 | 80.48 | 92.03 | b | 91.56 | 82.67 | 73.30 | c | 63.25 | b | 48.68 | 69.72 | ||||||||
1968 | 51.44 | 60.31 | 61.79 | 67.04 | e | 75.90 | a | 84.64 | a | 89.79 | 86.60 | b | 82.91 | b | 71.27 | c | 60.33 | g | 47.89 | 70.87 | a | |||||
1969 | 55.68 | 53.33 | b | 60.77 | c | 69.13 | d | 77.43 | d | 80.03 | j | 91.40 | 94.64 | c | 85.72 | c | 69.13 | d | 61.02 | b | 52.84 | 70.10 | a | |||
1970 | 51.16 | 58.60 | h | 59.98 | b | 63.36 | a | 76.19 | e | 83.73 | 93.15 | d | 92.08 | e | 82.64 | a | 69.98 | f | 59.56 | c | 50.77 | 71.26 | b | |||
1971 | 50.56 | 55.71 | 62.15 | 64.81 | d | 70.48 | 82.14 | e | 90.65 | 89.13 | 88.14 | h | 68.61 | c | 57.80 | c | 47.98 | f | 69.20 | b | ||||||
1972 | 48.82 | 57.52 | 67.59 | c | 68.02 | 73.72 | d | 83.92 | 91.93 | d | 87.96 | f | 80.98 | e | 70.40 | b | 56.09 | b | 49.78 | b | 68.07 | a | ||||
1973 | 49.60 | 55.17 | b | 56.79 | 65.32 | e | 74.81 | e | 84.42 | 89.70 | d | 88.71 | 79.07 | i | 70.87 | 58.60 | 52.71 | 67.88 | a | |||||||
1974 | 52.15 | 54.64 | 62.48 | b | 66.92 | 74.71 | 86.25 | 88.23 | 87.69 | 85.25 | 73.05 | 59.72 | 49.18 | 70.02 | ||||||||||||
1975 | 50.92 | 53.11 | 58.03 | 60.20 | 71.77 | 80.70 | 90.37 | 88.89 | 83.98 | 69.52 | 58.42 | 52.08 | 68.17 | |||||||||||||
1976 | 52.00 | 58.02 | 58.90 | 63.71 | d | 75.95 | 83.18 | 89.34 | 86.65 | 80.23 | 70.42 | 60.65 | 52.00 | 69.25 | ||||||||||||
1977 | 52.03 | 57.41 | 57.05 | 68.65 | 70.48 | 85.37 | 91.23 | 89.47 | 83.48 | a | 75.97 | 62.43 | 56.84 | 70.87 | ||||||||||||
1978 | 53.95 | 57.55 | 63.90 | 66.32 | 75.35 | 86.43 | 91.39 | 89.39 | 82.97 | 77.06 | 59.77 | 49.21 | 71.11 | |||||||||||||
1979 | 48.88 | a | 54.79 | 59.93 | a | 67.43 | 74.76 | 84.61 | b | 88.98 | 86.58 | 87.82 | 74.68 | 58.10 | 54.62 | e | 70.10 | |||||||||
1980 | 56.34 | 60.09 | 59.90 | b | 67.30 | 71.39 | 83.90 | 92.91 | d | 90.87 | 82.78 | l | ----- | z | ----- | z | 58.00 | j | 72.84 | d | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 51.15 | 55.91 | 61.07 | 67.67 | 75.35 | 83.66 | 91.01 | 90.04 | 83.94 | 72.11 | 58.98 | 51.83 | 70.15 | |||||||||||||
S.D. | 2.77 | 3.15 | 2.62 | 2.85 | 2.97 | 2.15 | 1.72 | 2.09 | 2.35 | 2.67 | 2.35 | 2.20 | 0.98 | |||||||||||||
SKEW | -0.62 | -0.07 | 0.75 | -0.15 | -0.03 | -0.33 | -0.04 | 0.39 | -0.16 | 0.40 | -0.35 | 0.32 | 0.11 | |||||||||||||
MAX | 56.34 | 62.00 | 69.66 | 74.09 | 81.73 | 88.00 | 94.98 | 94.64 | 89.15 | 78.62 | 63.25 | 57.14 | 72.46 | |||||||||||||
MIN | 43.38 | 50.04 | 56.79 | 60.20 | 68.41 | 77.30 | 86.87 | 86.58 | 77.78 | 67.29 | 53.73 | 47.89 | 68.17 | |||||||||||||
YRS | 51 | 52 | 52 | 51 | 53 | 50 | 50 | 46 | 48 | 51 | 50 | 49 | 26 |