| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1941 | ----- | z | 35.88 | t | 38.90 | 40.97 | 44.77 | 48.00 | 53.50 | a | 52.06 | 50.93 | o | 43.43 | h | 38.07 | 34.65 | 43.87 | ||||||||
| 1942 | 27.84 | 33.64 | 32.48 | 38.93 | 43.61 | 45.77 | 53.23 | 50.71 | 45.83 | a | 43.59 | d | 38.40 | 37.19 | 40.94 | |||||||||||
| 1943 | 27.00 | 34.04 | 36.42 | 41.87 | 42.65 | 47.77 | 50.06 | 50.23 | 49.27 | 44.35 | 36.97 | 30.68 | 40.94 | |||||||||||||
| 1944 | 31.33 | a | 34.59 | 34.42 | 39.77 | 44.26 | 48.53 | 51.32 | 51.06 | 49.60 | 46.14 | b | 36.70 | 31.32 | 41.59 | |||||||||||
| 1945 | 34.52 | 36.93 | 36.23 | 38.93 | 46.58 | 47.20 | 51.32 | 50.87 | 46.30 | 42.68 | 39.07 | 35.97 | 42.22 | |||||||||||||
| 1946 | 34.55 | 35.82 | 36.90 | 39.00 | 45.61 | 49.77 | 52.26 | 51.39 | 47.23 | 40.55 | 36.40 | 35.71 | 42.10 | |||||||||||||
| 1947 | 30.65 | 36.93 | a | 39.42 | 42.03 | 46.10 | 49.17 | 52.10 | 50.45 | 49.63 | 46.52 | 40.27 | 35.87 | 43.26 | ||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.35 | 51.71 | 47.17 | 42.42 | 36.40 | 30.81 | 43.14 | |||||||
| 1949 | 21.19 | 33.00 | 38.48 | 40.57 | 46.20 | a | 46.93 | a | 50.37 | a | 51.87 | 49.73 | 38.84 | 41.37 | 33.94 | 41.04 | ||||||||||
| 1950 | 25.19 | 33.86 | 36.19 | 38.03 | 40.70 | d | 49.33 | 50.35 | 52.58 | 47.60 | 45.81 | 40.27 | 41.84 | 41.81 | ||||||||||||
| 1951 | 34.00 | 36.61 | 32.35 | 39.13 | 43.94 | 48.40 | 50.60 | a | 48.71 | 46.00 | q | 43.55 | 37.90 | 30.61 | 40.53 | |||||||||||
| 1952 | 31.87 | 34.14 | 37.26 | 42.00 | 42.94 | 46.50 | 48.81 | 49.84 | 48.00 | 44.52 | 29.50 | 35.52 | 40.91 | |||||||||||||
| 1953 | 41.03 | 35.29 | 34.65 | 38.13 | 43.29 | 46.60 | 49.00 | q | ----- | z | 48.32 | b | 43.23 | a | 42.17 | 36.23 | a | 40.89 | ||||||||
| 1954 | 33.61 | 34.57 | 31.74 | 37.97 | 44.06 | 47.17 | 49.45 | 50.48 | 47.60 | 40.55 | 42.77 | 33.65 | 41.13 | |||||||||||||
| 1955 | 32.32 | 31.81 | a | 31.58 | 36.60 | 41.20 | a | 48.27 | 50.10 | 48.77 | 47.57 | 44.94 | 37.47 | 34.94 | 40.46 | |||||||||||
| 1956 | 35.71 | 31.14 | 35.87 | 39.57 | 46.32 | 47.20 | 55.13 | 51.58 | 48.07 | 42.06 | 34.23 | 34.39 | 41.77 | |||||||||||||
| 1957 | 24.87 | 34.29 | 37.84 | 39.83 | 46.90 | 49.57 | 48.83 | b | 48.90 | 50.73 | 43.32 | 33.87 | 35.39 | 41.19 | ||||||||||||
| 1958 | 35.94 | 41.71 | 33.67 | a | 39.43 | 47.61 | 53.17 | 53.84 | 52.35 | 48.00 | 42.29 | 38.23 | 39.42 | 43.81 | ||||||||||||
| 1959 | 36.87 | 33.68 | 35.13 | 37.87 | 42.48 | 49.70 | 50.55 | 48.16 | 47.17 | ----- | z | 34.27 | 33.61 | 40.86 | ||||||||||||
| 1960 | 30.68 | 33.90 | 36.35 | 39.60 | 42.00 | 47.00 | 49.71 | 48.45 | 46.23 | 42.71 | 36.40 | 31.45 | 40.37 | |||||||||||||
| 1961 | 34.68 | 38.93 | 37.39 | 36.93 | 43.65 | 48.47 | 49.16 | 51.29 | 43.97 | 40.50 | a | 31.93 | 34.42 | 40.94 | ||||||||||||
| 1962 | 28.52 | 32.07 | 33.81 | 38.54 | b | 41.13 | 43.63 | 47.06 | 48.97 | 47.73 | 41.61 | 37.27 | 33.35 | 39.47 | ||||||||||||
| 1963 | 25.00 | 38.85 | a | 34.63 | a | 36.23 | 41.00 | 46.63 | 46.87 | 49.32 | 50.80 | 43.13 | 38.67 | 31.68 | 40.23 | |||||||||||
| 1964 | 33.74 | 29.38 | 33.26 | 34.97 | 37.84 | 45.40 | 48.03 | 48.17 | a | 43.40 | 41.48 | 34.77 | 33.32 | 38.65 | ||||||||||||
| 1965 | 34.32 | 33.36 | 31.97 | 38.07 | 38.52 | 43.93 | 48.42 | 50.68 | 43.20 | 44.39 | 40.37 | 30.68 | 39.82 | |||||||||||||
| 1966 | 33.23 | 32.21 | 34.26 | 37.37 | 39.03 | 46.13 | 48.00 | 48.45 | 46.63 | 40.10 | 38.67 | 37.35 | 40.12 | |||||||||||||
| 1967 | 36.77 | 32.93 | 34.39 | 34.00 | 39.81 | 49.00 | 49.32 | 51.90 | 48.30 | 42.61 | 37.60 | 33.39 | 40.84 | |||||||||||||
| 1968 | 32.58 | 36.93 | 37.35 | 35.40 | 42.39 | 47.30 | 50.65 | 51.29 | 48.47 | 41.00 | f | 37.48 | a | 31.45 | 41.03 | |||||||||||
| 1969 | 34.15 | k | 32.32 | 33.68 | 38.10 | 42.90 | 52.40 | 47.77 | 46.23 | 47.70 | 40.45 | 37.60 | 35.26 | 41.31 | ||||||||||||
| 1970 | 36.35 | 35.39 | 35.16 | 35.37 | 41.74 | 49.40 | 49.52 | 47.13 | 44.03 | 41.00 | 37.17 | 32.87 | 40.43 | |||||||||||||
| 1971 | 33.84 | 33.86 | 33.97 | 37.80 | 43.23 | 45.33 | 48.48 | 51.77 | a | 44.63 | 39.58 | 37.13 | 33.32 | 40.25 | ||||||||||||
| 1972 | 31.71 | 36.10 | 38.35 | 35.57 | 42.03 | 46.67 | 50.84 | 51.00 | 43.97 | 40.13 | 41.83 | l | ----- | z | 41.64 | |||||||||||
| 1973 | ----- | z | 33.46 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.46 | ||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 32.07 | 34.57 | 35.29 | 38.34 | 43.05 | 47.75 | 50.19 | 50.21 | 47.23 | 42.52 | 37.40 | 34.20 | 41.01 | |||||||||||||
| S.D. | 4.38 | 2.51 | 2.21 | 2.07 | 2.50 | 2.08 | 1.99 | 1.64 | 2.09 | 2.02 | 2.81 | 2.62 | 1.13 | |||||||||||||
| SKEW | -0.60 | 0.69 | 0.07 | -0.11 | -0.12 | 0.46 | 0.57 | -0.60 | -0.39 | 0.20 | -0.58 | 0.78 | 0.50 | |||||||||||||
| MAX | 41.03 | 41.71 | 39.42 | 42.03 | 47.61 | 53.17 | 55.13 | 52.58 | 50.80 | 46.52 | 42.77 | 41.84 | 43.81 | |||||||||||||
| MIN | 21.19 | 29.38 | 31.58 | 34.00 | 37.84 | 43.63 | 46.87 | 46.23 | 43.20 | 38.84 | 29.50 | 30.61 | 38.65 | |||||||||||||
| NO YRS | 29 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 30 | 29 | 31 | 31 | 24 | |||||||||||||