YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1927 | ----- | z | ----- | z | ----- | z | 23.80 | 31.58 | 36.93 | 44.63 | a | 45.19 | 40.17 | 30.41 | b | 23.31 | a | 23.47 | a | 33.28 | c | |||||
1928 | 23.90 | 26.41 | 16.00 | 25.37 | 33.26 | 38.77 | 42.29 | 41.45 | 38.03 | 33.42 | 25.61 | b | 24.16 | 30.72 | ||||||||||||
1929 | 29.72 | b | 27.32 | 18.89 | d | 27.53 | 33.52 | 39.97 | 42.10 | 44.57 | a | 44.50 | 34.35 | 31.40 | 22.00 | 32.99 | ||||||||||
1930 | 29.13 | 6.71 | 19.06 | 24.73 | 30.35 | 37.17 | a | 42.65 | 44.97 | a | 38.43 | 32.39 | 23.00 | 23.03 | a | 29.30 | ||||||||||
1931 | 26.58 | 17.50 | 22.94 | 25.97 | 32.63 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.12 | g | ||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.68 | k | 30.48 | b | 30.17 | a | 23.23 | 27.96 | i | |
1968 | 20.42 | 18.97 | 24.66 | b | 26.37 | 35.06 | 37.85 | d | ----- | z | ----- | z | ----- | z | 33.13 | ----- | z | ----- | z | 28.06 | e | |||||
1969 | 22.42 | 21.22 | a | 29.16 | 29.79 | a | 35.48 | 41.76 | a | 44.23 | 44.45 | 40.70 | 39.61 | 28.23 | 31.00 | c | 34.01 | |||||||||
1970 | 16.06 | 26.25 | 30.13 | 26.80 | 36.97 | 41.67 | ----- | z | 43.29 | 42.46 | b | 33.65 | 33.23 | 21.97 | 32.04 | a | ||||||||||
1971 | 12.42 | 18.71 | 12.33 | a | 20.70 | 30.74 | 38.20 | 43.19 | 48.26 | 40.03 | 34.60 | a | 24.13 | 26.75 | c | 29.17 | ||||||||||
1972 | 20.06 | 12.57 | a | 8.87 | 23.17 | 33.19 | 39.11 | b | 45.42 | 47.13 | 42.83 | a | 35.30 | a | 30.52 | a | 25.37 | a | 30.29 | |||||||
1973 | 13.50 | a | 25.89 | 22.06 | 29.13 | 31.29 | 42.66 | a | 45.19 | 43.23 | 40.30 | 33.33 | a | 31.21 | a | 24.86 | b | 31.89 | ||||||||
1974 | 24.77 | 11.86 | 25.48 | 30.90 | 37.94 | 42.77 | 45.71 | 47.87 | 43.62 | a | 34.77 | 26.37 | 18.32 | 32.53 | ||||||||||||
1975 | 20.32 | 18.00 | a | 23.27 | a | 31.53 | 34.39 | 40.53 | 48.13 | 50.03 | 42.20 | 33.35 | 17.67 | 18.32 | 31.48 | |||||||||||
1976 | 17.57 | a | ----- | z | ----- | z | ----- | z | 35.42 | e | 46.31 | a | 51.16 | 48.58 | 38.20 | 31.16 | ----- | z | ----- | z | 38.34 | e | ||||
1977 | ----- | z | 32.33 | a | 27.83 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.35 | h | 27.33 | 20.86 | c | 27.09 | h | |
1978 | 30.20 | a | 25.43 | 28.77 | 34.37 | 38.35 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.42 | g | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 21.93 | 20.66 | 22.10 | 27.15 | 34.01 | 40.28 | 44.97 | 45.75 | 40.96 | 33.57 | 27.09 | 23.33 | 31.38 | |||||||||||||
S.D. | 5.81 | 7.11 | 6.44 | 3.68 | 2.52 | 2.70 | 2.72 | 2.59 | 2.16 | 2.31 | 4.35 | 3.39 | 1.65 | |||||||||||||
SKEW | -0.09 | -0.33 | -0.64 | 0.23 | 0.24 | 0.70 | 1.08 | 0.08 | 0.11 | 0.98 | -0.57 | 0.52 | 0.08 | |||||||||||||
MAX | 30.20 | 32.33 | 30.13 | 34.37 | 38.35 | 46.31 | 51.16 | 50.03 | 44.50 | 39.61 | 33.23 | 31.00 | 34.01 | |||||||||||||
MIN | 12.42 | 6.71 | 8.87 | 20.70 | 30.35 | 36.93 | 42.10 | 41.45 | 38.03 | 30.41 | 17.67 | 18.32 | 29.17 | |||||||||||||
YRS | 14 | 14 | 14 | 14 | 15 | 13 | 11 | 12 | 12 | 14 | 13 | 13 | 9 |