| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.31 | a | 64.29 | ----- | z | 65.56 | e | ----- | z | ----- | z | ----- | z | 64.39 | ||
| 1923 | ----- | z | ----- | z | ----- | z | 57.34 | a | 59.23 | 64.03 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.20 | |||
| 1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.62 | a | 66.26 | 67.41 | b | 68.17 | 62.71 | 55.60 | 51.57 | c | 62.05 | |||||
| 1954 | 45.69 | b | 53.15 | b | 54.60 | f | 56.13 | 65.10 | a | 61.79 | b | 63.96 | c | 65.24 | b | 66.04 | b | 63.10 | 58.23 | d | 51.80 | p | 59.84 | |||
| 1955 | 47.97 | 47.64 | 48.19 | 51.97 | 56.65 | e | 62.60 | 63.40 | a | 64.68 | 66.07 | a | 60.23 | a | 48.38 | a | 47.57 | a | 55.45 | |||||||
| 1956 | 47.16 | 44.76 | 49.58 | 57.97 | 62.50 | c | 62.34 | a | 67.90 | a | 66.13 | 66.77 | 57.32 | l | 55.28 | a | 50.16 | 57.32 | ||||||||
| 1957 | 44.19 | 50.46 | 52.90 | 56.53 | 61.26 | 65.39 | b | 66.29 | 67.90 | 72.03 | 62.15 | d | 55.80 | 52.17 | a | 58.92 | ||||||||||
| 1958 | 52.43 | c | 55.82 | 54.16 | 57.90 | 63.13 | a | 67.76 | a | 69.97 | 69.07 | a | ----- | z | ----- | z | ----- | z | ----- | z | 61.28 | |||||
| 1959 | ----- | z | ----- | z | ----- | z | 55.00 | z | ----- | z | 63.78 | c | 66.90 | 65.42 | 63.67 | 61.83 | b | 55.74 | c | 50.71 | c | 61.15 | ||||
| 1960 | 46.35 | 50.41 | 52.90 | 56.97 | a | 58.52 | 62.00 | a | 65.30 | a | 65.31 | b | 66.64 | b | 60.37 | a | 54.43 | b | 51.65 | 57.57 | ||||||
| 1961 | 54.19 | 51.29 | 52.71 | 54.03 | a | 59.84 | 65.50 | 68.83 | b | 66.18 | c | 64.37 | 59.35 | 51.97 | a | 47.93 | b | 58.02 | ||||||||
| 1962 | 48.29 | 51.54 | 52.37 | a | 56.17 | 56.71 | 61.55 | a | 63.61 | 66.87 | 66.66 | a | 61.61 | 56.03 | 52.19 | 57.80 | ||||||||||
| 1963 | 45.52 | 57.89 | 52.59 | b | 55.83 | 61.45 | 61.50 | 66.00 | 66.52 | 70.17 | a | 62.10 | 53.75 | b | 51.55 | 58.74 | ||||||||||
| 1964 | 49.06 | 50.69 | 51.35 | 52.97 | 57.00 | ----- | z | 64.55 | 66.00 | a | 65.37 | 63.97 | 51.47 | 45.83 | b | 56.20 | ||||||||||
| 1965 | 49.29 | 48.93 | 57.77 | 55.73 | 56.29 | 60.70 | 65.43 | a | 68.19 | 65.17 | 63.03 | 55.47 | 48.07 | a | 57.84 | |||||||||||
| 1966 | 49.29 | 50.68 | 52.48 | 57.37 | 58.81 | 65.13 | 64.39 | 66.77 | 68.13 | 61.45 | 54.24 | a | 50.35 | 58.26 | ||||||||||||
| 1967 | 49.00 | 51.14 | 49.94 | 53.11 | b | 59.17 | b | 63.53 | 66.39 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.04 | ||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 48.34 | 51.11 | 52.25 | 55.72 | 59.69 | 63.35 | 65.84 | 66.55 | 66.77 | 61.82 | 54.34 | 49.98 | 57.82 | |||||||||||||
| S.D. | 2.76 | 3.30 | 2.43 | 1.94 | 2.69 | 1.86 | 1.88 | 1.25 | 2.25 | 1.33 | 2.51 | 2.11 | 1.07 | |||||||||||||
| SKEW | 0.62 | 0.28 | 0.52 | -0.69 | 0.47 | 0.76 | 0.67 | 0.53 | 0.96 | -0.33 | -0.96 | -0.67 | -1.41 | |||||||||||||
| MAX | 54.19 | 57.89 | 57.77 | 57.97 | 65.10 | 67.76 | 69.97 | 69.07 | 72.03 | 63.97 | 58.23 | 52.19 | 58.92 | |||||||||||||
| MIN | 44.19 | 44.76 | 48.19 | 51.97 | 56.29 | 60.70 | 63.40 | 64.68 | 63.67 | 59.35 | 48.38 | 45.83 | 55.45 | |||||||||||||
| NO YRS | 13 | 13 | 12 | 14 | 14 | 16 | 16 | 14 | 14 | 12 | 13 | 12 | 8 | |||||||||||||