YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | 36.74 | 40.03 | 44.48 | 47.97 | 52.97 | 51.90 | 47.69 | a | 43.52 | b | 38.07 | a | 34.19 | 43.76 | b | |||||||
1942 | 28.40 | a | 33.04 | 33.45 | 39.03 | a | 43.26 | 46.53 | 53.03 | 52.06 | 45.33 | 41.39 | 34.90 | 35.23 | 40.47 | |||||||||||
1943 | ----- | z | 29.82 | 31.87 | 38.67 | 39.74 | 44.97 | 47.32 | 46.39 | 44.77 | 39.77 | 32.43 | 27.50 | a | 38.48 | a | ||||||||||
1944 | 29.29 | 30.52 | 31.13 | 36.50 | 39.06 | 43.97 | 46.90 | 46.43 | a | 44.77 | 39.26 | 32.87 | 26.39 | 37.26 | ||||||||||||
1945 | 29.87 | a | 32.43 | 32.10 | 34.57 | 42.48 | 41.90 | 43.97 | 45.71 | 42.41 | a | 40.40 | a | 36.59 | a | 32.84 | 37.94 | |||||||||
1946 | 32.93 | a | 34.07 | 35.57 | a | 37.33 | 43.68 | 43.23 | 46.26 | 46.03 | 42.90 | 35.00 | 30.00 | 30.68 | 38.14 | |||||||||||
1947 | 23.97 | 30.14 | 32.06 | 34.90 | 41.13 | 48.28 | a | 49.13 | 47.55 | 45.30 | 44.42 | 38.41 | a | 35.74 | 39.25 | |||||||||||
1948 | 30.26 | 30.38 | ----- | z | ----- | z | ----- | z | 48.80 | 48.00 | 52.39 | 44.40 | 37.90 | 34.57 | 29.48 | 39.58 | c | |||||||||
1949 | 18.80 | a | 28.64 | 34.52 | 36.70 | 42.32 | 42.83 | 45.48 | 48.80 | a | 45.10 | 35.42 | 38.23 | 31.03 | 37.32 | |||||||||||
1950 | 19.94 | 29.86 | 33.23 | 35.00 | 38.10 | 46.47 | 46.74 | 48.61 | 42.33 | 41.16 | 36.40 | 38.74 | 38.05 | |||||||||||||
1951 | 30.52 | 32.54 | 29.39 | 34.00 | 40.26 | 44.80 | 48.65 | 46.61 | 45.17 | 41.19 | 36.10 | 30.65 | 38.32 | |||||||||||||
1952 | 27.81 | 32.66 | 33.65 | 35.87 | 40.06 | 45.20 | 48.32 | 49.50 | a | 46.43 | 41.19 | 29.43 | 31.84 | 38.50 | ||||||||||||
1953 | 38.71 | 34.07 | 35.06 | 37.17 | 41.68 | 46.33 | 48.06 | 50.39 | 45.77 | 41.13 | 38.80 | 35.55 | 41.06 | |||||||||||||
1954 | 30.26 | 33.21 | 29.81 | 35.07 | 41.00 | 45.17 | a | 47.81 | 50.87 | 47.10 | 39.58 | 40.43 | 32.55 | 39.40 | ||||||||||||
1955 | 32.71 | 31.07 | 29.84 | 33.97 | 39.48 | 45.63 | 49.00 | 46.23 | 45.17 | 41.52 | 32.10 | 31.45 | 38.18 | |||||||||||||
1956 | 31.65 | 28.10 | 32.65 | 38.17 | 43.03 | 46.67 | 49.65 | 49.58 | 45.10 | 41.71 | 34.10 | 32.63 | a | 39.42 | ||||||||||||
1957 | 23.90 | 31.32 | 34.81 | 39.07 | a | 44.77 | 47.77 | 47.35 | 47.74 | 46.80 | 41.39 | 32.17 | 35.35 | 39.37 | ||||||||||||
1958 | 35.26 | 39.29 | 32.48 | 37.57 | 44.42 | 52.33 | 52.03 | 48.26 | 46.00 | 39.35 | 36.20 | 37.27 | a | 41.70 | ||||||||||||
1959 | 37.42 | g | 33.46 | 34.87 | 39.13 | 40.13 | 47.93 | a | 47.32 | 49.39 | 47.20 | 40.87 | 32.90 | a | 32.06 | 40.48 | a | |||||||||
1960 | 31.06 | 32.52 | 33.71 | 37.20 | 41.71 | 44.13 | 46.00 | 48.94 | 45.30 | 41.45 | 34.23 | 31.03 | 38.94 | |||||||||||||
1961 | 33.32 | 37.32 | 35.77 | 37.40 | 42.52 | 46.80 | 49.13 | 49.45 | 41.40 | 38.23 | 30.87 | 31.81 | 39.50 | |||||||||||||
1962 | 27.84 | 31.96 | 30.90 | 38.70 | 42.23 | 42.90 | 47.48 | 49.65 | 45.63 | 40.90 | 36.87 | 32.81 | 38.99 | |||||||||||||
1963 | 24.23 | 35.54 | 31.97 | 36.93 | 39.61 | 45.15 | c | 48.94 | 49.52 | 47.60 | 42.52 | 36.57 | 32.13 | 39.22 | ||||||||||||
1964 | 33.00 | 29.03 | 32.19 | 34.10 | 37.45 | 44.70 | 47.90 | 47.90 | 43.40 | 36.87 | 32.00 | a | 29.00 | 37.30 | ||||||||||||
1965 | 32.42 | 32.25 | 28.90 | 36.00 | 37.48 | 41.87 | 47.61 | 49.65 | 42.53 | 41.16 | 37.87 | 30.19 | 38.16 | |||||||||||||
1966 | 31.48 | 31.79 | 32.84 | 37.10 | 38.03 | 44.17 | 48.23 | 45.81 | 46.10 | 37.48 | 35.80 | 35.48 | 38.69 | |||||||||||||
1967 | 34.06 | 32.18 | 30.81 | 30.90 | 38.61 | 46.83 | 45.74 | 46.74 | 44.83 | 42.45 | 35.97 | 32.19 | 38.44 | |||||||||||||
1968 | 32.19 | 33.31 | 37.06 | 35.47 | 42.45 | 45.77 | 49.10 | 48.87 | 45.30 | 38.42 | 36.73 | 29.97 | 39.55 | |||||||||||||
1969 | 26.26 | 29.50 | 31.26 | 37.23 | 41.13 | 50.97 | 45.74 | 44.71 | 45.67 | 36.42 | 34.17 | 32.58 | 37.97 | |||||||||||||
1970 | 31.52 | 32.14 | 32.13 | 33.07 | 38.03 | 44.23 | 44.84 | 44.13 | 41.80 | 35.13 | 33.23 | 29.84 | 36.67 | |||||||||||||
1971 | 28.33 | a | 30.32 | 29.00 | 31.77 | 37.71 | 41.40 | 46.97 | 47.68 | 39.43 | 35.29 | 33.63 | 29.03 | 35.88 | ||||||||||||
1972 | 25.94 | 28.93 | 33.77 | 31.80 | 39.52 | 43.07 | 44.65 | 44.90 | 38.57 | 32.52 | 32.13 | 25.55 | 35.11 | |||||||||||||
1973 | 25.90 | 26.46 | 34.48 | 35.93 | 42.35 | 47.57 | 48.58 | 45.77 | 46.00 | 41.16 | 35.57 | 36.65 | 38.87 | |||||||||||||
1974 | 28.32 | 34.25 | 34.94 | 38.57 | 41.35 | 45.27 | 49.65 | 49.37 | a | 44.70 | 36.37 | a | 38.10 | 34.84 | 39.64 | |||||||||||
1975 | 32.45 | 33.96 | 32.06 | 32.23 | 39.68 | ----- | z | 50.88 | n | 48.90 | 43.90 | 42.74 | 35.13 | 34.65 | 37.57 | b | ||||||||||
1976 | 33.61 | 31.41 | 32.26 | 36.13 | 41.03 | 44.70 | 49.32 | 51.35 | 48.77 | 39.06 | 34.33 | 31.97 | 39.50 | |||||||||||||
1977 | 26.90 | 34.43 | 34.32 | 37.63 | 41.42 | 46.57 | 47.90 | 52.61 | 46.73 | 38.42 | 35.10 | 36.39 | 39.87 | |||||||||||||
1978 | 36.23 | 36.93 | 37.19 | 38.57 | 41.68 | 49.17 | 51.26 | 51.29 | 48.80 | 39.74 | 29.83 | 28.45 | 40.76 | |||||||||||||
1979 | 24.52 | 33.33 | a | 35.74 | 39.00 | 42.19 | 44.80 | 49.65 | 50.48 | 48.23 | 42.19 | 32.87 | 37.58 | 40.05 | ||||||||||||
1980 | 27.06 | 34.79 | 35.94 | 37.89 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.92 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.48 | 32.23 | 33.09 | 36.32 | 40.93 | 45.71 | 48.07 | 48.52 | 44.99 | 39.61 | 34.76 | 32.39 | 38.75 | |||||||||||||
S.D. | 4.32 | 2.62 | 2.24 | 2.31 | 2.03 | 2.41 | 2.08 | 2.25 | 2.29 | 2.70 | 2.67 | 3.12 | 1.39 | |||||||||||||
SKEW | -0.40 | 0.34 | -0.04 | -0.63 | -0.03 | 0.54 | 0.45 | -0.05 | -0.79 | -0.65 | -0.09 | -0.04 | -0.39 | |||||||||||||
MAX | 38.71 | 39.29 | 37.19 | 40.03 | 44.77 | 52.33 | 53.03 | 52.61 | 48.80 | 44.42 | 40.43 | 38.74 | 41.70 | |||||||||||||
MIN | 18.80 | 26.46 | 28.90 | 30.90 | 37.45 | 41.40 | 43.97 | 44.13 | 38.57 | 32.52 | 29.43 | 25.55 | 35.11 | |||||||||||||
YRS | 37 | 39 | 39 | 39 | 38 | 38 | 38 | 39 | 39 | 39 | 39 | 39 | 34 |