YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.06 | 17.13 | 12.83 | a | 20.34 | i | ||
1905 | 16.42 | 19.33 | a | 31.10 | 34.32 | b | 37.94 | 45.63 | 50.77 | 50.57 | a | 43.47 | 28.90 | 24.43 | 6.13 | 32.42 | ||||||||||
1906 | 10.29 | 23.89 | 29.10 | a | 34.83 | a | 40.77 | 43.76 | a | 52.80 | a | 50.84 | 43.66 | a | 30.32 | 25.70 | 23.68 | 34.14 | ||||||||
1907 | 23.06 | 27.85 | a | 31.45 | 34.30 | 37.10 | 42.83 | 51.10 | a | 51.42 | 41.80 | 36.94 | 18.87 | 14.48 | 34.27 | |||||||||||
1908 | 8.68 | 16.28 | 23.00 | d | 33.79 | a | 38.07 | a | 44.00 | j | 54.86 | j | 51.19 | 42.00 | 29.06 | 18.97 | 10.10 | 27.11 | b | |||||||
1909 | 18.84 | 16.42 | b | 27.00 | c | 29.83 | 37.48 | ----- | z | 53.35 | 55.71 | 44.97 | 30.06 | 22.50 | 3.97 | 30.92 | a | |||||||||
1910 | 6.32 | 13.71 | 29.55 | 32.10 | 40.00 | h | 47.82 | b | 53.43 | j | 52.10 | 45.60 | 33.04 | g | 28.03 | a | 18.97 | 30.47 | c | |||||||
1911 | 18.64 | f | 22.86 | n | 31.14 | j | 33.53 | 36.34 | b | 46.28 | a | 53.94 | 48.79 | b | 45.87 | 30.90 | 18.62 | a | 9.00 | a | 35.92 | c | ||||
1912 | 10.45 | 19.34 | 28.94 | 30.13 | 36.58 | 44.73 | 52.39 | 48.79 | b | 36.21 | b | 30.87 | a | 21.97 | a | 7.14 | c | 30.63 | ||||||||
1913 | ----- | z | 17.19 | a | 22.58 | 32.00 | 39.65 | 45.45 | a | 50.03 | a | 54.74 | 44.03 | 29.37 | a | 28.07 | 12.25 | c | 34.12 | a | ||||||
1914 | 12.32 | c | 18.33 | g | 24.73 | a | 34.93 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.00 | i | |
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 | ----- | 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 | 37.26 | 47.03 | 55.90 | 53.52 | 41.93 | 34.94 | 30.13 | 20.29 | 40.13 | d | ||||||||
1966 | 10.26 | 15.43 | 24.77 | 31.93 | 42.03 | 49.20 | 61.00 | 56.26 | 48.77 | 34.52 | 28.03 | 18.13 | 35.03 | |||||||||||||
1967 | 15.19 | 22.54 | 29.35 | 33.90 | 41.90 | 49.43 | 59.06 | 56.71 | 48.53 | 35.35 | 24.77 | 9.84 | 35.55 | |||||||||||||
1968 | 4.90 | 23.93 | 27.87 | 30.93 | 40.19 | 49.90 | 55.81 | 51.52 | 40.70 | 33.58 | 24.07 | 9.13 | 32.71 | |||||||||||||
1969 | 15.16 | 18.36 | 22.16 | 34.43 | 43.26 | 48.67 | 56.94 | 57.10 | 47.30 | 31.77 | 21.27 | 18.29 | 34.56 | |||||||||||||
1970 | 15.94 | 22.93 | 26.06 | 29.23 | 41.94 | 50.17 | 56.90 | 57.52 | 43.30 | 31.03 | 25.57 | 17.77 | 34.86 | |||||||||||||
1971 | 15.29 | 20.46 | 22.23 | a | 32.23 | 39.48 | 50.50 | 55.50 | a | 56.10 | 40.38 | a | 34.10 | 21.83 | 11.68 | 33.32 | ||||||||||
1972 | 14.00 | 17.10 | 27.55 | 32.50 | 41.00 | 51.07 | 55.90 | 53.81 | 44.57 | 38.42 | 24.07 | 5.90 | 33.82 | |||||||||||||
1973 | 0.19 | 16.61 | 28.68 | 31.93 | 39.74 | 46.23 | 53.77 | 53.29 | 42.20 | 31.74 | 22.17 | 12.29 | 31.57 | |||||||||||||
1974 | 5.94 | 4.46 | 26.58 | 31.37 | 39.77 | 50.50 | 56.35 | 50.84 | 42.17 | 35.74 | 22.37 | 9.90 | 31.33 | |||||||||||||
1975 | 4.48 | 17.18 | 25.71 | 28.80 | 39.06 | 44.73 | 56.23 | 49.74 | 42.67 | 28.19 | 16.40 | 9.83 | a | 30.25 | ||||||||||||
1976 | 4.71 | 19.72 | 20.06 | 31.60 | 42.68 | 47.20 | 56.84 | 51.00 | 46.40 | 28.65 | 18.87 | 7.74 | 31.29 | |||||||||||||
1977 | 5.77 | 16.57 | 19.77 | 33.27 | 41.65 | 53.90 | 57.32 | 54.45 | 46.23 | 33.45 | 22.43 | 18.26 | 33.59 | |||||||||||||
1978 | 18.58 | 21.32 | 30.10 | 34.87 | 38.52 | 46.50 | 52.06 | 48.19 | 40.10 | 30.65 | 22.87 | 2.32 | 32.17 | |||||||||||||
1979 | 2.00 | 8.29 | 22.77 | 29.63 | 41.10 | 46.00 | 53.94 | 51.35 | 43.77 | 34.81 | 18.50 | 12.87 | 30.42 | |||||||||||||
1980 | 20.84 | 23.24 | 26.52 | 33.47 | 41.55 | 46.93 | 56.42 | 52.03 | 44.30 | 33.03 | 22.30 | 22.94 | 35.30 | |||||||||||||
1981 | 19.61 | 18.89 | 29.13 | 35.97 | 43.81 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.48 | g | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 11.64 | 18.38 | 26.27 | 32.53 | 39.95 | 47.59 | 54.97 | 52.70 | 43.64 | 32.30 | 22.69 | 12.53 | 33.01 | |||||||||||||
S.D. | 6.40 | 5.00 | 3.38 | 1.96 | 2.15 | 2.68 | 2.71 | 2.76 | 2.82 | 2.78 | 3.59 | 5.76 | 1.74 | |||||||||||||
SKEW | -0.02 | -0.84 | -0.36 | -0.26 | -0.05 | 0.35 | 0.05 | 0.23 | -0.33 | 0.40 | 0.19 | 0.28 | -0.16 | |||||||||||||
MAX | 23.06 | 27.85 | 31.45 | 35.97 | 43.81 | 53.90 | 61.00 | 57.52 | 48.77 | 38.42 | 30.13 | 23.68 | 35.55 | |||||||||||||
MIN | 0.19 | 4.46 | 19.77 | 28.80 | 36.34 | 42.83 | 50.03 | 48.19 | 36.21 | 28.19 | 16.40 | 2.32 | 30.25 | |||||||||||||
YRS | 24 | 24 | 25 | 26 | 25 | 23 | 23 | 25 | 25 | 25 | 26 | 26 | 19 |