| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.89 | d | 42.89 | |
| 1911 | 43.00 | f | 41.12 | c | 55.00 | e | 58.17 | 60.74 | 74.39 | b | 84.96 | h | 82.83 | a | 66.07 | 61.64 | c | 48.93 | 40.58 | 58.95 | ||||||
| 1912 | 41.39 | 46.88 | d | 46.48 | b | 56.86 | a | 65.67 | a | 82.58 | r | 80.60 | k | 78.71 | 68.93 | 56.27 | a | 50.00 | b | 40.13 | a | 55.13 | ||||
| 1913 | ----- | z | 41.44 | a | 48.67 | a | 57.93 | b | ----- | z | 71.59 | a | 80.45 | b | 81.73 | a | ----- | z | ----- | z | ----- | z | ----- | z | 63.63 | |
| 1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 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 | 48.42 | b | 59.77 | 66.23 | 67.94 | 84.93 | a | 87.61 | 83.32 | 68.33 | 64.58 | 53.97 | a | 39.90 | a | 65.91 | ||||||||
| 1927 | 41.90 | 41.82 | 48.06 | 54.83 | ----- | z | 75.20 | ----- | z | 81.00 | ----- | z | ----- | z | ----- | z | 35.07 | a | 53.98 | |||||||
| 1928 | 42.79 | b | 44.77 | p | 51.90 | b | 55.67 | 76.16 | 71.83 | 86.39 | 82.03 | 77.07 | 62.84 | 50.37 | 38.33 | a | 63.22 | |||||||||
| 1929 | 40.14 | j | 40.59 | a | 52.23 | 52.30 | 68.23 | 72.34 | a | 86.61 | 88.84 | 71.40 | 66.97 | 56.83 | 47.45 | 63.98 | ||||||||||
| 1930 | 26.26 | 48.00 | 52.26 | 62.07 | 61.90 | 75.50 | 86.42 | 84.87 | 72.30 | 62.74 | 51.17 | 39.42 | 60.24 | |||||||||||||
| 1931 | 44.45 | 47.46 | 51.68 | 60.50 | 73.19 | 74.10 | 91.23 | 88.55 | 71.70 | 63.00 | 47.13 | 38.74 | 62.64 | |||||||||||||
| 1932 | 37.23 | a | 44.17 | 50.68 | 57.67 | 64.97 | 78.33 | 82.84 | 82.29 | 81.37 | 65.23 | 54.50 | 35.35 | 61.22 | ||||||||||||
| 1933 | 38.77 | 39.46 | 49.77 | 60.57 | 59.19 | 76.50 | 89.58 | 83.45 | 70.32 | e | 70.90 | 53.10 | a | 48.26 | 61.66 | |||||||||||
| 1934 | 48.97 | 52.29 | 63.45 | 69.43 | 72.77 | 74.83 | 86.32 | 88.26 | 76.53 | 65.74 | 50.80 | 38.37 | a | 65.65 | ||||||||||||
| 1935 | 38.23 | 44.54 | 45.10 | 57.38 | f | 67.06 | 77.50 | b | 83.29 | 86.90 | a | 82.68 | b | 61.41 | d | 42.58 | f | 42.06 | 62.88 | |||||||
| 1936 | 39.32 | 41.66 | 51.10 | 63.00 | 71.42 | 77.27 | 90.48 | 87.10 | 76.20 | 70.65 | 57.57 | 38.74 | l | 65.98 | ||||||||||||
| 1937 | 27.74 | 40.39 | 49.29 | 53.14 | a | 71.28 | b | 71.77 | 87.60 | a | 84.42 | 77.77 | 68.16 | 52.06 | l | 44.14 | c | 61.43 | ||||||||
| 1938 | 40.26 | 40.11 | 45.48 | 59.60 | 66.55 | 79.47 | 87.77 | 83.65 | 79.60 | 61.97 | 46.63 | 46.30 | a | 61.45 | ||||||||||||
| 1939 | 44.42 | 40.96 | 55.03 | 66.43 | 71.32 | 74.50 | 87.90 | 89.48 | 78.07 | 64.74 | 57.70 | 46.10 | a | 64.72 | ||||||||||||
| 1940 | 44.27 | a | 45.45 | 54.23 | 60.83 | 73.29 | 84.17 | 84.71 | 89.23 | 72.79 | b | 64.71 | 44.37 | 45.23 | 63.60 | |||||||||||
| 1941 | 43.94 | 47.21 | 57.23 | 59.33 | 66.32 | 71.40 | 88.19 | 79.42 | 68.50 | 62.06 | 54.07 | 41.45 | 61.59 | |||||||||||||
| 1942 | 34.81 | 40.39 | 50.87 | 59.73 | 61.68 | 72.30 | 88.32 | 88.23 | 80.20 | 68.65 | 49.37 | 44.90 | 61.62 | |||||||||||||
| 1943 | 36.61 | 46.36 | 50.32 | c | 61.83 | 65.29 | 69.77 | 87.16 | 83.84 | 85.90 | 62.65 | 52.63 | 40.68 | 61.92 | ||||||||||||
| 1944 | 37.84 | 41.86 | 52.23 | 57.13 | 69.00 | 69.00 | 83.84 | 84.06 | 78.87 | 71.61 | 45.57 | 41.58 | 61.05 | |||||||||||||
| 1945 | 44.06 | 46.54 | 46.42 | 57.63 | 66.71 | 75.03 | 91.16 | 88.35 | 77.03 | 70.90 | 47.73 | 41.16 | 62.73 | |||||||||||||
| 1946 | 39.45 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.45 | ||
| 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1962 | ----- | z | ----- | z | ----- | z | 53.67 | x | 59.84 | 72.59 | h | 83.94 | 80.07 | a | 79.07 | a | 63.45 | 51.63 | 46.68 | 66.38 | ||||||
| 1963 | 42.68 | 52.39 | 49.90 | b | 50.23 | 68.03 | a | 72.23 | 79.54 | e | 81.55 | 79.53 | 64.56 | f | 50.14 | b | 44.00 | 60.93 | ||||||||
| 1964 | 39.17 | b | 45.90 | 46.77 | e | 58.21 | a | 66.30 | d | 71.31 | a | 84.70 | d | 81.59 | b | 75.31 | d | 71.10 | b | 45.61 | b | 40.37 | d | 60.53 | ||
| 1965 | 40.86 | b | 48.58 | b | 53.66 | b | 58.50 | b | 64.48 | j | 71.72 | e | 83.00 | a | 79.75 | c | ----- | z | ----- | z | ----- | z | ----- | z | 62.29 | |
| 1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1968 | ----- | z | ----- | z | ----- | z | ----- | z | 66.13 | 77.03 | 89.00 | 76.77 | 75.47 | 62.77 | 46.27 | 38.39 | 66.48 | |||||||||
| 1969 | 37.19 | 38.50 | 48.68 | 58.40 | 71.13 | 74.10 | 83.65 | 85.06 | 77.13 | 56.48 | 54.27 | 42.65 | 60.60 | |||||||||||||
| 1970 | 40.26 | 49.96 | 49.68 | 51.73 | 69.03 | 77.73 | 87.81 | 87.35 | 72.20 | 61.00 | 47.17 | 36.29 | 60.85 | |||||||||||||
| 1971 | 42.45 | 45.57 | 45.16 | 56.57 | 65.61 | 71.33 | 85.61 | 87.26 | 71.03 | 59.48 | 49.43 | 37.45 | 59.75 | |||||||||||||
| 1972 | 38.19 | 45.34 | 57.45 | 56.23 | 70.71 | 79.17 | 85.74 | 84.52 | 70.60 | 62.23 | 46.00 | 33.77 | 60.83 | |||||||||||||
| 1973 | 38.48 | 46.54 | 48.94 | 59.80 | 72.68 | 78.23 | 87.42 | 83.55 | 75.23 | 62.61 | 43.40 | 42.48 | 61.61 | |||||||||||||
| 1974 | 37.48 | 46.50 | 49.29 | 57.70 | 66.55 | 82.77 | 83.90 | 85.77 | 81.50 | 66.45 | 51.20 | 41.16 | 62.52 | |||||||||||||
| 1975 | 40.52 | 42.21 | 46.16 | 50.57 | 68.32 | 74.43 | 86.45 | 79.94 | 80.83 | 57.29 | 47.73 | 43.10 | 59.80 | |||||||||||||
| 1976 | 43.19 | 45.14 | 47.81 | 55.80 | 70.81 | 72.07 | 85.39 | 75.84 | 78.03 | 66.77 | 57.90 | 47.52 | 62.19 | |||||||||||||
| 1977 | 39.03 | 53.18 | 48.19 | 66.33 | 57.97 | 81.40 | 84.16 | 85.42 | 71.90 | 64.26 | 47.93 | ----- | z | 63.62 | ||||||||||||
| 1978 | ----- | z | ----- | z | ----- | z | 53.24 | e | 60.94 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.09 | ||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 39.76 | 44.91 | 50.83 | 58.41 | 67.28 | 75.29 | 86.12 | 83.92 | 75.57 | 64.28 | 50.35 | 41.53 | 61.76 | |||||||||||||
| S.D. | 4.48 | 3.89 | 4.21 | 4.48 | 4.46 | 4.00 | 2.75 | 3.56 | 4.74 | 4.09 | 4.03 | 3.76 | 1.47 | |||||||||||||
| SKEW | -1.11 | 0.32 | 1.02 | 0.37 | -0.28 | 0.72 | -0.23 | -0.29 | -0.04 | 0.08 | 0.33 | -0.07 | 1.07 | |||||||||||||
| MAX | 48.97 | 53.18 | 63.45 | 69.43 | 76.16 | 84.93 | 91.23 | 89.48 | 85.90 | 71.61 | 57.90 | 48.26 | 65.65 | |||||||||||||
| MIN | 26.26 | 38.50 | 45.10 | 50.23 | 57.97 | 69.00 | 79.54 | 75.84 | 66.07 | 56.27 | 43.40 | 33.77 | 59.75 | |||||||||||||
| NO YRS | 32 | 34 | 35 | 35 | 35 | 35 | 34 | 37 | 34 | 33 | 32 | 34 | 22 | |||||||||||||