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 | ----- | z |
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 | 46.13 | ----- | z | ----- | z | ----- | z | ----- | z | 46.13 | k | |
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 | 22.00 | v | 19.93 | 20.48 | 20.21 | j | ||
1959 | 14.06 | 15.21 | 16.74 | 23.57 | 34.29 | 41.23 | 43.81 | 45.84 | 37.90 | 28.06 | 17.27 | 15.55 | 27.79 | |||||||||||||
1960 | 11.58 | 7.17 | 20.74 | 26.53 | 31.97 | 40.17 | 44.35 | 43.16 | 38.90 | 28.32 | 20.42 | f | 14.26 | 27.92 | a | |||||||||||
1961 | 11.33 | a | 15.00 | 21.10 | 25.57 | 32.60 | a | 40.50 | 43.65 | 45.90 | 36.07 | 27.97 | 18.73 | 12.42 | 27.57 | |||||||||||
1962 | 9.26 | 20.50 | 15.84 | 27.33 | 31.77 | 36.77 | 42.43 | a | 42.84 | 37.48 | a | 29.77 | 20.63 | c | 14.16 | 27.40 | ||||||||||
1963 | 4.77 | a | 16.57 | 18.84 | 27.33 | 34.81 | 38.77 | 45.90 | 44.61 | 42.37 | 32.77 | a | 21.76 | a | 11.26 | 28.31 | ||||||||||
1964 | 6.81 | 5.59 | 13.06 | 22.30 | 31.48 | 37.67 | 45.61 | 41.10 | 36.90 | 26.45 | 18.77 | 10.68 | 24.70 | |||||||||||||
1965 | 12.39 | 8.00 | 7.29 | 23.46 | d | 28.26 | 36.50 | 42.83 | a | 41.32 | 34.52 | a | 27.29 | 21.60 | 16.48 | 25.00 | ||||||||||
1966 | 6.65 | 7.64 | 17.77 | 22.27 | 31.20 | a | 36.30 | 46.10 | 41.26 | 35.27 | 26.61 | 21.30 | 12.17 | a | 25.38 | |||||||||||
1967 | 11.45 | 10.71 | 19.97 | 23.03 | a | 27.97 | 35.40 | 42.97 | 41.23 | 34.86 | a | 27.61 | 22.53 | 10.86 | b | 25.72 | ||||||||||
1968 | 16.37 | a | 17.17 | 19.83 | b | 23.70 | 32.37 | a | 41.03 | a | 44.45 | 43.00 | 35.87 | 32.90 | 18.37 | 17.29 | 28.53 | |||||||||
1969 | 21.90 | a | 17.86 | 12.29 | 28.55 | a | 34.35 | 39.07 | 48.13 | 45.68 | 39.67 | 27.45 | 18.07 | 19.83 | a | 29.40 | ||||||||||
1970 | 20.52 | 17.11 | 15.45 | 24.93 | 34.32 | 38.17 | 45.60 | a | 47.32 | 36.10 | 27.58 | 22.60 | 16.61 | 28.86 | ||||||||||||
1971 | 16.00 | 13.50 | 18.65 | 23.53 | 28.65 | 39.50 | 44.37 | a | 44.46 | c | 36.63 | 28.45 | 20.37 | 14.42 | 27.38 | |||||||||||
1972 | 16.03 | 17.28 | 21.26 | 25.70 | 29.84 | 39.80 | 43.58 | 43.19 | 39.33 | 31.48 | 12.10 | 12.55 | 27.68 | |||||||||||||
1973 | 10.83 | a | 12.07 | 17.39 | 16.83 | 31.10 | a | 38.60 | 41.81 | 42.19 | 34.53 | 27.97 | 22.63 | 11.71 | 25.64 | |||||||||||
1974 | 9.52 | 9.39 | 22.13 | 21.47 | 32.55 | 37.97 | 41.58 | 39.13 | 33.63 | 28.61 | 13.30 | 6.45 | 24.64 | |||||||||||||
1975 | 8.58 | 8.18 | 13.87 | 19.80 | 25.94 | 32.13 | 40.90 | a | 39.35 | 31.17 | 20.45 | 14.27 | 12.42 | 22.25 | ||||||||||||
1976 | 3.03 | 12.57 | a | 13.00 | 25.69 | a | 29.58 | 37.03 | 43.23 | 43.45 | 38.60 | 24.45 | 14.07 | 6.60 | a | 24.28 | ||||||||||
1977 | 4.23 | 11.00 | 13.81 | 20.93 | 31.81 | 39.27 | 45.80 | a | 45.74 | 37.45 | a | ----- | z | ----- | z | 18.50 | a | 26.85 | b | |||||||
1978 | 13.00 | ----- | z | 19.90 | ----- | z | 31.00 | 38.00 | a | 45.65 | 41.94 | 36.73 | 27.61 | ----- | z | ----- | z | 31.73 | d | |||||||
1979 | 0.77 | a | 16.33 | d | 19.74 | 22.73 | 32.10 | a | 40.53 | ----- | z | 41.00 | 38.17 | a | 27.55 | 8.00 | 13.30 | a | 23.66 | a | ||||||
1980 | 11.42 | 16.90 | 16.52 | b | 18.11 | c | 30.39 | ----- | z | ----- | z | ----- | z | 35.97 | 25.42 | ----- | z | ----- | z | 22.10 | e | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 10.93 | 13.13 | 17.05 | 23.49 | 31.29 | 38.30 | 44.14 | 43.18 | 36.73 | 27.85 | 18.23 | 13.71 | 26.50 | |||||||||||||
S.D. | 5.37 | 4.30 | 3.70 | 3.01 | 2.27 | 2.16 | 1.81 | 2.30 | 2.37 | 2.69 | 4.11 | 3.72 | 1.96 | |||||||||||||
SKEW | 0.13 | -0.19 | -0.79 | -0.43 | -0.46 | -1.02 | 0.16 | 0.04 | 0.03 | -0.42 | -0.95 | -0.08 | -0.40 | |||||||||||||
MAX | 21.90 | 20.50 | 22.13 | 28.55 | 34.81 | 41.23 | 48.13 | 47.32 | 42.37 | 32.90 | 22.63 | 20.48 | 29.40 | |||||||||||||
MIN | 0.77 | 5.59 | 7.29 | 16.83 | 25.94 | 32.13 | 40.90 | 39.13 | 31.17 | 20.45 | 8.00 | 6.45 | 22.25 | |||||||||||||
YRS | 22 | 21 | 22 | 21 | 22 | 21 | 20 | 22 | 22 | 21 | 19 | 21 | 17 |