YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1899 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1900 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1901 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1902 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 12.14 | b | 9.14 | 19.19 | 28.76 | a | 37.94 | 35.58 | f | 45.67 | a | 42.48 | 37.63 | 28.45 | 17.23 | 3.00 | 25.60 | a | ||||||||
1915 | 3.52 | 12.29 | 18.06 | 29.87 | 31.32 | 36.80 | 42.65 | 40.58 | 37.03 | 26.90 | 15.81 | c | 9.26 | 25.34 | ||||||||||||
1916 | 9.74 | 13.03 | 20.10 | 25.52 | a | 29.50 | e | 36.52 | a | 44.84 | 41.82 | c | 35.32 | b | 29.03 | 12.13 | 5.61 | 25.26 | ||||||||
1917 | 1.67 | a | 9.85 | a | 7.94 | 20.67 | 29.06 | 37.07 | 44.29 | 41.03 | 36.30 | 24.94 | 22.00 | 16.58 | 24.28 | |||||||||||
1918 | 7.03 | 9.68 | 19.39 | 22.53 | 30.97 | a | 41.87 | 43.68 | 42.10 | 35.73 | 30.13 | 12.60 | 5.65 | 25.11 | ||||||||||||
1919 | 0.29 | 4.32 | 13.06 | 26.40 | 32.74 | 31.90 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 15.36 | g | |||||
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 | 40.43 | i | 47.84 | 47.68 | 36.37 | 30.48 | 21.10 | 10.52 | 32.33 | f | ||||||
1935 | 10.97 | 11.61 | 17.16 | 26.90 | 32.45 | 38.97 | 44.71 | 46.35 | 36.97 | 28.84 | 20.53 | 10.03 | 27.12 | |||||||||||||
1936 | 9.20 | a | 13.52 | 17.87 | 27.27 | 35.74 | 42.60 | 47.16 | 46.06 | 37.27 | 28.35 | e | 16.57 | 10.87 | 27.71 | |||||||||||
1937 | -0.65 | 6.18 | 16.94 | 24.70 | 34.74 | 39.70 | 46.68 | 44.97 | 38.73 | 31.23 | 21.73 | 13.58 | 26.54 | |||||||||||||
1938 | 9.48 | 13.86 | 19.42 | 26.53 | 32.00 | 39.80 | 42.48 | 44.71 | 38.30 | 30.90 | 10.27 | 5.71 | 26.12 | |||||||||||||
1939 | 4.70 | a | -3.64 | 12.94 | 24.03 | 30.48 | 32.40 | 42.00 | 39.97 | 35.30 | 25.58 | 17.87 | 11.71 | 22.78 | ||||||||||||
1940 | 6.10 | 11.83 | 19.48 | 27.96 | c | 34.42 | 39.53 | 45.81 | 43.16 | 40.33 | 27.52 | 12.28 | a | 10.67 | a | 26.59 | ||||||||||
1941 | 3.03 | 10.25 | 14.77 | 24.63 | 35.55 | 37.00 | 41.61 | 41.97 | 35.67 | 30.29 | 17.03 | 6.87 | 24.89 | |||||||||||||
1942 | 0.06 | -0.43 | 7.23 | 27.70 | 33.29 | g | 39.27 | 44.16 | 43.29 | 34.90 | a | 19.40 | a | 12.55 | a | 9.25 | g | 22.81 | b | |||||||
1943 | 3.65 | -0.46 | 1.65 | 19.60 | 27.17 | a | 37.53 | 43.97 | 42.19 | 34.95 | h | 27.06 | 15.77 | 7.10 | 20.47 | a | ||||||||||
1944 | 1.61 | 8.45 | 12.45 | 20.77 | 30.35 | 36.40 | 44.10 | 41.84 | 37.10 | 28.55 | 18.76 | a | 3.94 | 23.69 | ||||||||||||
1945 | 6.32 | 11.50 | 12.03 | 16.63 | 31.32 | 34.37 | 41.00 | 43.26 | 34.33 | 27.35 | 13.48 | a | 6.55 | 23.18 | ||||||||||||
1946 | 0.87 | 4.89 | 17.34 | b | 27.77 | 28.42 | 36.13 | 43.55 | 41.52 | 31.90 | 25.29 | 11.53 | 10.55 | 23.31 | ||||||||||||
1947 | -0.71 | 8.71 | 13.58 | 23.83 | 30.52 | 33.50 | 40.90 | 43.65 | 36.90 | 29.10 | 10.30 | 6.20 | a | 23.04 | ||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.29 | 37.67 | 28.06 | 12.70 | 9.58 | 25.66 | g | |||||
1949 | 3.77 | a | 5.54 | 20.03 | 27.73 | 33.48 | 38.30 | 43.90 | 40.68 | 36.17 | 24.50 | g | 21.10 | 8.23 | 25.36 | a | ||||||||||
1950 | 8.08 | g | 9.86 | 13.97 | 23.87 | 27.97 | 34.90 | 41.00 | b | 38.13 | a | 37.52 | a | 32.00 | a | 22.37 | 13.10 | 26.79 | a | |||||||
1951 | 6.06 | 9.46 | 16.71 | 24.87 | 33.06 | 34.70 | 43.55 | 42.20 | a | 33.53 | 27.00 | a | 12.60 | 7.58 | 24.28 | |||||||||||
1952 | 6.41 | b | 3.04 | b | 8.72 | b | 25.97 | a | 34.06 | 39.68 | b | 43.74 | 43.30 | a | 36.46 | b | 26.45 | 11.90 | 4.40 | a | 23.68 | |||||
1953 | 14.55 | 5.89 | 17.16 | 22.54 | b | 29.68 | 40.63 | 45.48 | 43.55 | 35.63 | 27.97 | 19.53 | 6.97 | 25.80 | ||||||||||||
1954 | 11.65 | 16.71 | 17.00 | 28.67 | 33.84 | 37.40 | 46.94 | 42.81 | 38.14 | a | 29.23 | 19.20 | 3.42 | 27.08 | ||||||||||||
1955 | 2.68 | -0.89 | 10.97 | 19.63 | 30.29 | 34.63 | 42.58 | 43.40 | a | 34.93 | 24.66 | b | 14.81 | d | 13.45 | 22.59 | ||||||||||
1956 | 14.71 | 2.86 | 12.00 | 25.27 | 34.71 | 40.60 | 41.87 | a | 38.68 | 37.03 | 29.06 | 9.62 | a | 4.84 | 24.27 | |||||||||||
1957 | 6.48 | 15.93 | 18.06 | 24.60 | 31.52 | 37.40 | 44.39 | 43.87 | 34.13 | 30.94 | 14.87 | 8.45 | 25.89 | |||||||||||||
1958 | 3.06 | 15.75 | 14.42 | 23.10 | 32.67 | a | 40.33 | 42.74 | 44.52 | 37.67 | 27.55 | 16.03 | 11.03 | 25.74 | ||||||||||||
1959 | 6.10 | 11.89 | 15.00 | 23.27 | 31.55 | 42.03 | 42.68 | 43.65 | 34.57 | 24.68 | 14.83 | 9.55 | 24.98 | |||||||||||||
1960 | 5.60 | a | 3.69 | 17.29 | 24.80 | 31.32 | 38.13 | 44.48 | b | 43.94 | 39.07 | 28.58 | 17.27 | 8.58 | 25.23 | |||||||||||
1961 | 4.97 | 12.14 | 19.16 | 24.47 | 33.26 | 40.50 | 44.13 | 46.00 | 33.27 | 26.23 | 14.13 | 5.23 | 25.29 | |||||||||||||
1962 | 0.87 | a | 14.82 | 10.58 | 26.80 | 30.48 | 37.70 | 42.32 | 40.45 | 35.20 | 29.61 | 22.77 | 13.52 | 25.43 | ||||||||||||
1963 | 3.52 | 15.89 | 17.03 | 27.00 | 35.68 | 37.27 | 44.65 | 45.48 | 40.40 | 32.81 | 18.20 | 7.65 | 27.13 | |||||||||||||
1964 | 2.23 | 1.24 | 7.97 | 22.83 | 32.65 | 38.57 | 47.58 | 42.58 | 36.97 | 30.10 | 18.87 | 10.45 | 24.34 | |||||||||||||
1965 | 14.03 | 10.00 | 13.13 | 26.63 | 33.39 | 39.97 | 47.03 | 44.35 | 36.70 | 29.74 | 22.23 | 11.97 | 27.43 | |||||||||||||
1966 | 3.39 | ----- | z | 16.16 | 24.27 | 33.13 | a | 38.93 | 46.42 | 41.32 | 35.80 | 27.03 | 21.70 | 7.32 | 26.86 | a | ||||||||||
1967 | 10.29 | 10.18 | 23.10 | 25.90 | 31.84 | 38.47 | 46.19 | 42.71 | 36.73 | 28.29 | 19.57 | 8.06 | 26.78 | |||||||||||||
1968 | 7.48 | 14.31 | 15.23 | 21.13 | 31.74 | 38.70 | 45.55 | 42.52 | 34.30 | 29.32 | 15.87 | 8.58 | 25.39 | |||||||||||||
1969 | 13.26 | 9.75 | 11.87 | 27.40 | 36.31 | b | 37.57 | 47.16 | 47.10 | 38.70 | 24.97 | a | 13.93 | 12.00 | 26.67 | |||||||||||
1970 | 9.58 | 14.36 | 15.16 | 19.53 | 32.16 | 39.76 | a | 45.35 | 45.45 | 35.30 | 23.94 | 21.27 | 11.39 | 26.10 | ||||||||||||
1971 | 11.13 | 10.25 | 14.61 | 25.57 | 31.84 | 40.17 | 46.03 | 44.90 | a | 33.23 | 27.45 | 16.69 | a | 8.13 | 25.83 | |||||||||||
1972 | 7.77 | 13.55 | 22.70 | a | ----- | z | 32.23 | 41.67 | 45.32 | 45.10 | a | 38.93 | 32.34 | b | 14.13 | 5.97 | 27.25 | a | ||||||||
1973 | 5.81 | 6.82 | 16.93 | a | 20.63 | 33.26 | 38.80 | 44.87 | 44.90 | 37.07 | 29.00 | 21.10 | 9.97 | 25.76 | ||||||||||||
1974 | 5.90 | 7.29 | 22.16 | 23.40 | 33.97 | 41.17 | 45.20 | a | 42.00 | 35.90 | 32.35 | 17.03 | 6.00 | 26.03 | ||||||||||||
1975 | 7.90 | 8.25 | 16.67 | a | 21.70 | 31.81 | 37.20 | 45.07 | c | 43.77 | 35.83 | 26.00 | 15.33 | 11.63 | a | 25.10 | ||||||||||
1976 | 7.58 | 15.21 | a | 13.65 | 26.40 | 34.52 | 37.03 | a | 46.29 | 42.32 | 38.19 | d | 25.27 | a | 17.07 | 7.42 | 25.91 | |||||||||
1977 | 7.72 | b | 12.57 | 12.76 | b | 27.23 | 34.48 | 42.60 | 47.81 | 47.10 | a | 40.60 | e | 29.83 | a | 25.68 | b | 30.14 | q | 29.85 | a | |||||
1978 | 17.43 | q | 5.79 | n | ----- | z | ----- | z | ----- | z | 43.95 | h | 46.81 | 42.00 | 38.00 | 29.87 | 19.41 | a | 6.94 | 30.50 | f | |||||
1979 | 5.45 | 12.89 | a | 17.39 | h | 24.89 | b | 33.59 | b | 38.83 | a | 45.77 | ----- | z | 38.27 | 29.97 | a | 12.70 | ----- | z | 26.93 | c | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 6.23 | 9.25 | 15.23 | 24.63 | 32.40 | 38.36 | 44.60 | 43.15 | 36.56 | 28.19 | 16.75 | 8.66 | 25.33 | |||||||||||||
S.D. | 4.10 | 4.99 | 4.27 | 2.86 | 2.23 | 2.36 | 1.89 | 2.11 | 1.89 | 2.54 | 3.87 | 3.02 | 1.34 | |||||||||||||
SKEW | 0.29 | -0.71 | -0.68 | -0.60 | -0.04 | -0.35 | -0.20 | -0.01 | -0.04 | -0.74 | 0.12 | 0.28 | -0.32 | |||||||||||||
MAX | 14.71 | 16.71 | 23.10 | 29.87 | 37.94 | 42.60 | 47.84 | 47.68 | 40.60 | 32.81 | 25.68 | 16.58 | 27.71 | |||||||||||||
MIN | -0.71 | -3.64 | 1.65 | 16.63 | 27.17 | 32.40 | 40.90 | 38.13 | 31.90 | 19.40 | 9.62 | 3.00 | 22.59 | |||||||||||||
YRS | 48 | 48 | 48 | 48 | 48 | 47 | 50 | 50 | 50 | 50 | 51 | 48 | 39 |