| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1909 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 1.27 | 0.00 | 3.29 | 2.65 | 7.57 | 5.31 | 20.09 | |||||||
| 1910 | 6.09 | 7.09 | 3.43 | 2.23 | 2.84 | 0.32 | 0.89 | 0.16 | 2.31 | 2.83 | 11.16 | 4.81 | 44.16 | |||||||||||||
| 1911 | 4.29 | 1.82 | 1.67 | 1.42 | 3.76 | 3.24 | 0.01 | 0.52 | 0.80 | 1.84 | 7.43 | 3.14 | 29.94 | |||||||||||||
| 1912 | 9.78 | 4.76 | 2.98 | 4.56 | 5.15 | 1.64 | 2.21 | 2.60 | 0.82 | 2.04 | 5.46 | 6.45 | 48.45 | |||||||||||||
| 1913 | 9.11 | 1.40 | 7.48 | 3.60 | 2.39 | 5.53 | 1.45 | 0.18 | 0.44 | 3.19 | 8.47 | 3.78 | 47.02 | |||||||||||||
| 1914 | 8.96 | 6.11 | 0.83 | 2.83 | 1.27 | 5.04 | 1.52 | 0.00 | 4.70 | 4.73 | 1.37 | 1.91 | 39.27 | |||||||||||||
| 1915 | 5.16 | 8.30 | 1.53 | a | 3.55 | 7.56 | b | 1.45 | 2.85 | 0.40 | 0.28 | 0.76 | 8.50 | 8.38 | 48.72 | |||||||||||
| 1916 | 10.24 | 6.54 | 6.22 | 2.12 | 2.13 | 2.25 | 1.56 | 0.65 | 0.49 | 1.11 | 4.49 | 6.30 | 44.10 | |||||||||||||
| 1917 | 5.65 | 5.40 | 6.41 | 5.96 | 1.60 | 0.86 | 0.00 | 0.27 | 4.19 | 0.17 | 4.29 | 14.87 | 49.67 | |||||||||||||
| 1918 | 8.03 | 7.07 | 4.26 | 1.73 | 0.46 | 0.27 | 0.93 | 3.00 | 1.74 | 4.83 | 3.73 | 2.49 | 38.54 | |||||||||||||
| 1919 | 7.39 | 10.19 | 6.29 | 3.32 | 0.95 | 0.00 | 0.00 | 0.18 | 0.78 | 2.48 | 4.58 | 7.15 | 43.31 | |||||||||||||
| 1920 | 5.01 | 0.45 | 7.70 | 7.11 | 3.10 | 1.91 | 0.25 | 1.27 | 3.26 | 5.45 | 9.79 | 10.63 | 55.93 | |||||||||||||
| 1921 | 11.06 | 5.67 | 4.23 | 5.34 | 4.89 | 1.24 | 0.14 | 0.89 | 1.94 | 2.57 | 11.40 | 4.10 | 53.47 | |||||||||||||
| 1922 | 6.36 | 7.15 | 7.15 | 3.77 | 2.67 | 1.82 | 0.13 | 0.93 | 0.10 | 0.68 | 2.45 | 11.18 | 44.39 | |||||||||||||
| 1923 | 10.25 | 1.94 | 3.28 | 5.15 | 3.30 | 5.42 | 0.55 | 1.52 | 0.81 | 3.62 | 3.56 | 5.52 | 44.92 | |||||||||||||
| 1924 | 5.08 | 7.35 | 1.09 | 0.92 | 0.31 | 0.92 | 0.25 | 0.38 | 0.73 | 6.21 | 7.23 | 6.63 | 37.10 | |||||||||||||
| 1925 | 9.59 | 10.12 | 2.48 | 5.14 | 3.80 | 1.39 | 0.34 | 2.85 | 2.35 | 1.45 | 4.17 | 4.48 | 48.16 | |||||||||||||
| 1926 | 3.11 | 9.88 | 1.18 | 2.52 | 2.21 | 1.23 | 0.77 | 2.62 | 0.52 | 1.38 | 15.25 | 8.42 | 49.09 | |||||||||||||
| 1927 | 6.46 | 10.56 | 3.49 | 3.40 | 3.52 | 2.73 | 0.63 | 1.54 | 6.47 | 2.92 | 14.82 | 4.69 | 61.23 | |||||||||||||
| 1928 | 6.34 | 1.92 | 9.13 | 4.16 | 0.29 | 1.93 | 0.86 | 0.49 | 1.14 | 2.45 | 3.88 | 5.81 | 38.40 | |||||||||||||
| 1929 | 5.97 | 2.66 | 3.83 | 6.21 | 1.21 | 4.43 | 0.11 | 1.22 | 0.32 | 1.30 | 0.20 | 8.29 | 35.75 | |||||||||||||
| 1930 | 3.89 | 6.64 | 2.39 | 3.21 | 4.05 | 2.27 | 0.22 | 0.46 | 1.75 | 2.78 | 3.50 | 2.30 | 33.46 | |||||||||||||
| 1931 | 6.03 | 3.96 | 7.94 | 1.48 | 0.84 | 1.76 | 0.08 | 0.00 | 1.01 | 4.54 | 5.86 | 8.48 | 41.98 | |||||||||||||
| 1932 | 6.34 | 5.78 | 7.20 | 2.57 | 3.54 | 0.37 | 0.17 | 0.02 | 0.15 | 1.69 | 5.06 | 7.20 | 40.09 | |||||||||||||
| 1933 | 9.41 | 4.79 | 4.18 | 2.17 | 4.55 | 3.37 | 0.08 | 0.26 | 1.71 | 2.78 | 1.72 | 12.36 | 47.38 | |||||||||||||
| 1934 | 7.38 | 3.68 | 4.32 | 1.39 | 0.64 | 3.74 | 0.51 | 0.26 | 0.47 | 4.85 | 8.21 | 5.87 | 41.32 | |||||||||||||
| 1935 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1936 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1937 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1938 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1939 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1940 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1941 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1942 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1943 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1944 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1945 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1946 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1947 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1948 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1949 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 1.71 | 6.65 | 5.27 | 13.63 | ||||
| 1950 | 8.36 | 4.68 | 7.46 | 0.00 | z | 0.00 | i | 3.60 | 0.15 | 0.47 | 0.80 | 4.55 | 3.83 | 6.10 | 40.00 | |||||||||||
| 1951 | 8.63 | 4.83 | 5.10 | 2.88 | 2.33 | 0.81 | 0.73 | 1.18 | 1.16 | 7.17 | 6.83 | a | 13.65 | 55.30 | ||||||||||||
| 1952 | 9.86 | 5.39 | 2.54 | 0.30 | 1.43 | 3.55 | 0.77 | 0.23 | 0.69 | 0.11 | 2.90 | 7.93 | a | 35.70 | ||||||||||||
| 1953 | 13.50 | 6.21 | 5.15 | 3.36 | 5.12 | 2.23 | 0.00 | 1.29 | 0.01 | 1.39 | 6.89 | 6.31 | 51.46 | |||||||||||||
| 1954 | 8.94 | 2.46 | 4.00 | 2.92 | 2.16 | 2.36 | 0.51 | 1.39 | 0.84 | 0.91 | 4.07 | 5.25 | 35.81 | |||||||||||||
| 1955 | 3.03 | a | 3.62 | 4.70 | 5.92 | 0.96 | 1.23 | 1.31 | 0.00 | 1.98 | 4.91 | 9.44 | 14.73 | 51.83 | ||||||||||||
| 1956 | 7.49 | 3.86 | 3.12 | 1.50 | 4.57 | 3.40 | 1.69 | 1.19 | 0.15 | 6.44 | 1.88 | 4.56 | 39.85 | |||||||||||||
| 1957 | 2.90 | 7.32 | 5.73 | S | 4.06 | 5.33 | 1.52 | 0.15 | 0.22 | 0.06 | 5.30 | 3.47 | 10.11 | 46.17 | ||||||||||||
| 1958 | 9.47 | 8.50 | 4.36 | S | 5.54 | 1.64 | 3.85 | 0.34 | 0.66 | 1.53 | a | 1.76 | 7.59 | 7.23 | e | 52.47 | ||||||||||
| 1959 | 8.24 | 5.78 | 1.00 | f | 2.42 | 4.26 | 0.60 | 0.09 | 0.79 | 8.49 | 4.57 | 2.13 | 3.16 | 40.53 | ||||||||||||
| 1960 | 4.86 | 5.79 | 7.04 | 2.13 | 3.54 | 0.36 | 0.35 | 2.79 | 1.44 | 2.39 | 9.63 | 3.05 | 43.37 | |||||||||||||
| 1961 | 1.06 | 8.15 | 5.77 | a | 0.96 | 2.35 | 0.39 | 0.30 | 0.54 | a | 0.97 | 4.92 | 6.12 | 6.38 | 37.91 | |||||||||||
| 1962 | 2.92 | 5.12 | 6.25 | 2.93 | 4.43 | 0.80 | 0.36 | 0.17 | 4.31 | 5.36 | 6.52 | 6.22 | 45.39 | |||||||||||||
| 1963 | 1.13 | 5.66 | 2.20 | 5.84 | 2.24 | 3.11 | 0.07 | 0.66 | 0.95 | 0.72 | 9.31 | 3.45 | 35.34 | |||||||||||||
| 1964 | 5.43 | 1.74 | 6.49 | 1.01 | 1.28 | 5.13 | 2.25 | 0.79 | 0.49 | 0.70 | 1.84 | i | 6.00 | 31.31 | ||||||||||||
| 1965 | 4.52 | 1.37 | 1.20 | 2.73 | 1.00 | d | 2.66 | 0.84 | 4.10 | 0.76 | 0.69 | 5.71 | 1.61 | 27.19 | ||||||||||||
| 1966 | 5.34 | 3.49 | 3.67 | 0.53 | 1.01 | 1.33 | 0.00 | 0.20 | 1.13 | 1.87 | 7.69 | S | 2.77 | z | 26.26 | |||||||||||
| 1967 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 1.09 | 2.86 | 0.56 | 0.06 | 0.92 | 4.36 | 2.54 | b | 0.00 | z | 12.39 | |||||||
| 1968 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 2.52 | 1.54 | 0.03 | 4.19 | 1.18 | 3.42 | 5.20 | 0.00 | z | 18.08 | ||||||||
| 1969 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 1.67 | 4.01 | 0.00 | z | 0.00 | 1.65 | 1.45 | 0.66 | 0.00 | z | 9.44 | |||||||
| 1970 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 2.02 | 2.76 | 1.50 | 0.00 | 2.74 | 3.88 | 0.00 | z | 0.00 | z | 12.90 | |||||||
| 1971 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 3.32 | 0.54 | 0.54 | 0.86 | 0.00 | z | 0.00 | z | 0.00 | z | 5.26 | |||||
| 1972 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.76 | 1.04 | 0.79 | 0.53 | 0.00 | z | 0.00 | z | 3.12 | |||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 6.73 | 5.36 | 4.52 | 3.19 | 2.62 | 2.27 | 0.65 | 0.92 | 1.56 | 2.87 | 5.94 | 6.55 | 43.78 | |||||||||||||
| S.D. | 2.77 | 2.60 | 2.20 | 1.73 | 1.64 | 1.48 | 0.67 | 1.05 | 1.67 | 1.84 | 3.39 | 3.27 | 7.48 | |||||||||||||
| SKEW | 0.01 | 0.12 | 0.10 | 0.41 | 0.70 | 0.50 | 1.37 | 1.62 | 2.27 | 0.44 | 0.71 | 0.92 | 0.03 | |||||||||||||
| MAX | 13.50 | 10.56 | 9.13 | 7.11 | 7.56 | 5.53 | 2.85 | 4.19 | 8.49 | 7.17 | 15.25 | 14.87 | 61.23 | |||||||||||||
| MIN | 1.06 | 0.45 | 0.83 | 0.30 | 0.29 | 0.00 | 0.00 | 0.00 | 0.01 | 0.11 | 0.20 | 1.61 | 27.19 | |||||||||||||
| NO YRS | 42 | 42 | 41 | 41 | 45 | 47 | 48 | 49 | 49 | 49 | 46 | 43 | 38 | |||||||||||||