| 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 | 0.00 | 0.00 | 0.55 | 0.44 | 1.79 | 1.21 | 3.99 | |||||||
| 1910 | 1.45 | 0.85 | 0.52 | 0.55 | 0.42 | 0.05 | 0.00 | 0.00 | 1.12 | 0.47 | 2.07 | 0.69 | 8.19 | |||||||||||||
| 1911 | 1.28 | 1.65 | 0.22 | 0.95 | 0.00 | z | 0.00 | z | 0.00 | 0.00 | 0.07 | 1.07 | 0.87 | 0.94 | 7.05 | |||||||||||
| 1912 | 2.37 | 1.27 | 0.62 | 1.62 | 1.74 | w | 0.00 | z | 0.00 | z | 1.31 | 0.53 | 1.15 | 0.90 | 0.55 | 10.32 | ||||||||||
| 1913 | 1.09 | 0.05 | 0.24 | 0.18 | 0.91 | 1.38 | 2.67 | 0.00 | 0.40 | 0.35 | 1.24 | 0.90 | 9.41 | |||||||||||||
| 1914 | 1.10 | 0.58 | 0.22 | 0.98 | 0.70 | 2.14 | 0.38 | 0.00 | 0.11 | 0.81 | 0.00 | 0.00 | z | 7.02 | ||||||||||||
| 1915 | 0.72 | 0.87 | 0.75 | 0.80 | 3.00 | m | 0.09 | 0.58 | 0.14 | 0.00 | 0.10 | 0.64 | 1.22 | 5.91 | ||||||||||||
| 1916 | 1.88 | 1.87 | 0.49 | 0.07 | 0.52 | 1.30 | 0.38 | 0.37 | 0.06 | 0.84 | 0.35 | 0.40 | 8.53 | |||||||||||||
| 1917 | 0.68 | 0.82 | 0.85 | 1.38 | 1.43 | 0.17 | 0.00 | 0.00 | 1.05 | 0.00 | 0.84 | 0.88 | 8.10 | |||||||||||||
| 1918 | 1.19 | 0.67 | 1.21 | 0.44 | 0.01 | 0.48 | 0.27 | 0.45 | 1.20 | 1.43 | 0.39 | 0.30 | 8.04 | |||||||||||||
| 1919 | 0.36 | 1.23 | 0.54 | 0.58 | 0.00 | 0.00 | 0.00 | 0.00 | 1.32 | 0.78 | 0.99 | 1.46 | 7.26 | |||||||||||||
| 1920 | 0.29 | 0.21 | 1.29 | 0.29 | 0.72 | 0.59 | 0.09 | 0.34 | 0.29 | 1.01 | 1.38 | 1.62 | 8.12 | |||||||||||||
| 1921 | 1.30 | 1.00 | 0.67 | 0.45 | 1.88 | 1.00 | 0.00 | 0.08 | 0.42 | 0.19 | 0.43 | 0.93 | 8.35 | |||||||||||||
| 1922 | 0.72 | 0.97 | 0.55 | 1.38 | 0.52 | 0.30 | 0.00 | 0.65 | 0.00 | 0.24 | 0.52 | 1.93 | 7.78 | |||||||||||||
| 1923 | 0.53 | 0.00 | 0.10 | 0.81 | 1.54 | 1.65 | 0.12 | 0.00 | 0.57 | 1.55 | 0.49 | 0.24 | 7.60 | |||||||||||||
| 1924 | 1.00 | 0.97 | 0.20 | 0.47 | 0.00 | 0.20 | 0.22 | 0.28 | 0.04 | 0.53 | 0.57 | 2.90 | 7.38 | |||||||||||||
| 1925 | 1.50 | 0.70 | 0.36 | 1.33 | 0.55 | 0.50 | 0.00 | 0.69 | 1.35 | v | 1.33 | 0.87 | 1.44 | 9.27 | ||||||||||||
| 1926 | 0.96 | 1.20 | 0.31 | 0.45 | u | 0.76 | 0.20 | 0.06 | 0.42 | z | 0.05 | 0.03 | 2.02 | l | 0.75 | 4.32 | ||||||||||
| 1927 | 0.73 | s | 1.04 | p | 0.42 | 0.29 | r | 0.72 | 0.99 | 0.01 | 0.30 | 1.19 | 0.41 | x | 1.56 | n | 0.17 | 3.80 | ||||||||
| 1928 | 2.15 | 0.64 | 0.90 | 0.58 | 0.01 | 0.09 | 0.00 | 0.00 | 0.05 | 0.43 | 0.38 | 0.63 | 5.86 | |||||||||||||
| 1929 | 1.20 | 0.66 | 0.52 | 1.02 | 0.35 | 2.20 | e | 0.00 | 0.00 | 0.17 | 0.03 | 0.00 | 1.09 | 7.24 | ||||||||||||
| 1930 | 1.34 | 0.88 | 0.56 | 0.75 | 1.13 | 0.32 | 0.00 | d | 1.09 | 0.79 | 0.94 | 0.26 | 0.21 | 8.27 | ||||||||||||
| 1931 | 0.56 | 0.78 | 1.56 | 0.38 | 0.15 | 0.29 | 0.00 | f | 0.00 | 0.14 | 0.06 | 0.32 | 0.88 | 5.12 | ||||||||||||
| 1932 | 0.73 | 0.17 | 1.81 | 0.92 | 1.74 | 0.29 | 0.37 | 0.00 | 0.00 | 1.38 | 0.92 | 0.63 | 8.96 | |||||||||||||
| 1933 | 0.61 | 0.96 | 0.33 | 0.77 | 0.81 | 0.20 | 0.12 | 0.10 | 0.18 | 1.77 | 0.10 | 1.30 | 7.25 | |||||||||||||
| 1934 | 0.84 | 0.87 | 0.61 | 0.27 | 0.00 | 1.84 | 0.08 | 0.22 | 0.00 | 0.26 | 1.73 | 0.97 | 7.69 | |||||||||||||
| 1935 | 0.22 | 0.54 | 0.44 | 2.25 | 0.19 | 0.39 | 0.17 | 0.00 | 0.00 | 0.25 | 0.41 | 1.26 | 6.12 | |||||||||||||
| 1936 | 2.30 | 1.20 | 0.58 | 1.29 | 0.23 | 1.77 | 0.16 | 0.50 | e | 0.26 | 0.00 | 0.15 | 0.29 | 8.73 | ||||||||||||
| 1937 | 1.20 | 1.05 | 1.09 | 0.72 | 1.09 | 0.51 | 0.08 | 0.05 | 0.43 | 0.73 | 1.53 | 1.77 | 10.25 | |||||||||||||
| 1938 | 1.37 | 0.77 | 1.82 | 0.59 | a | 1.07 | 0.50 | 0.69 | a | 0.07 | 0.11 | 0.77 | 1.36 | 0.56 | 9.68 | |||||||||||
| 1939 | 0.93 | 0.84 | 0.78 | 0.06 | 0.08 | 0.12 | a | 0.30 | 0.00 | 0.87 | 0.39 | 0.22 | 1.30 | 5.89 | ||||||||||||
| 1940 | 2.12 | a | 1.85 | 1.66 | 1.31 | 0.00 | 0.20 | 0.06 | 0.00 | 2.80 | 2.06 | 1.18 | 0.52 | 13.76 | ||||||||||||
| 1941 | 1.37 | 1.90 | 0.13 | 1.58 | 1.75 | a | 2.04 | 0.55 | 2.10 | 0.48 | a | 1.25 | 1.03 | a | 0.87 | 15.05 | ||||||||||
| 1942 | 1.29 | a | 1.68 | 0.23 | 0.63 | 0.91 | 0.56 | 0.19 | 0.41 | 0.67 | 0.38 | 2.30 | 2.02 | 11.27 | ||||||||||||
| 1943 | 2.08 | 0.59 | 1.27 | a | 1.09 | 0.60 | 0.85 | 0.15 | 0.12 | a | 0.00 | 1.98 | 0.35 | a | 0.60 | 9.68 | ||||||||||
| 1944 | 0.94 | 1.37 | 0.57 | 1.17 | 0.64 | 1.35 | 0.05 | 0.00 | 0.08 | 0.05 | 1.45 | 1.06 | 8.73 | |||||||||||||
| 1945 | 1.33 | 1.57 | 1.55 | 0.20 | 1.73 | 0.74 | 0.48 | 0.02 | 0.54 | 0.69 | 1.09 | 1.87 | 11.81 | |||||||||||||
| 1946 | 0.83 | 0.76 | 0.89 | 0.28 | 0.54 | 0.27 | 0.15 | 0.08 | 0.22 | 0.89 | 1.46 | 0.69 | 7.06 | |||||||||||||
| 1947 | 0.25 | 0.64 | 0.46 | 0.66 | 0.69 | 1.66 | 0.00 | 0.15 | 0.35 | 0.76 | 0.98 | 0.29 | 6.89 | |||||||||||||
| 1948 | 0.40 | 0.73 | 0.75 | 0.92 | 1.11 | 0.36 | 0.34 | 0.02 | f | 0.07 | 0.21 | 0.83 | 1.18 | g | 5.72 | |||||||||||
| 1949 | 0.44 | 0.39 | 0.23 | 0.01 | 0.89 | 0.48 | 0.00 | 0.00 | 0.32 | 0.42 | 1.52 | 0.00 | z | 4.70 | ||||||||||||
| 1950 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | i | 1.07 | 0.11 | 0.13 | 0.22 | 0.17 | 1.16 | 1.67 | 4.53 | ||||||||
| 1951 | 0.84 | 1.57 | 0.67 | 0.39 | 0.94 | 0.35 | 0.08 | 0.13 | 0.00 | 1.30 | 0.96 | 1.74 | 8.97 | |||||||||||||
| 1952 | 0.82 | 0.68 | 0.96 | 0.62 | 0.55 | 2.13 | 0.00 | 0.05 | 0.00 | l | 0.00 | 0.45 | 0.72 | 6.98 | ||||||||||||
| 1953 | 0.82 | 1.44 | 0.51 | 0.44 | 2.77 | 1.19 | 0.00 | 0.08 | 0.00 | 0.23 | 0.93 | 1.04 | 9.45 | |||||||||||||
| 1954 | 0.62 | 0.36 | 0.58 | 0.86 | 0.22 | 0.95 | 0.00 | 0.17 | a | 0.21 | 0.23 | 0.98 | 0.89 | 6.07 | ||||||||||||
| 1955 | 0.67 | 0.31 | 0.11 | 1.58 | 0.93 | 0.90 | 1.12 | 0.00 | 0.50 | 0.56 | 1.23 | 1.59 | 9.50 | |||||||||||||
| 1956 | 1.94 | 0.22 | 0.11 | 0.30 | 2.33 | 0.80 | 0.00 | 0.52 | 0.00 | 2.37 | 0.22 | 0.36 | 9.17 | |||||||||||||
| 1957 | 1.37 | 1.41 | 2.19 | 1.19 | 3.74 | 0.22 | 0.05 | 0.20 | 0.05 | 0.95 | 0.33 | 1.10 | a | 12.80 | ||||||||||||
| 1958 | 1.82 | 1.90 | 0.53 | 1.45 | 1.18 | 1.21 | 0.11 | 0.29 | 0.24 | 0.02 | 0.23 | 0.94 | 9.92 | |||||||||||||
| 1959 | 0.91 | 0.42 | 0.54 | 0.42 | 1.61 | 0.10 | 0.00 | 0.50 | 2.64 | 0.53 | 0.23 | 0.42 | 8.32 | |||||||||||||
| 1960 | 1.23 | 1.06 | 0.91 | 0.20 | 1.48 | 0.05 | 0.11 | 0.83 | 0.53 | 0.10 | 1.60 | 0.42 | 8.52 | |||||||||||||
| 1961 | 0.61 | 0.97 | 1.03 | 0.06 | 0.74 | 0.00 | 0.24 | 0.19 | 0.71 | 0.85 | 0.70 | 0.79 | 6.89 | |||||||||||||
| 1962 | 1.08 | 1.27 | 0.67 | 0.21 | 1.83 | 0.05 | 0.00 | 0.12 | 0.20 | 2.01 | 0.96 | 0.89 | 9.29 | |||||||||||||
| 1963 | 0.96 | 0.63 | 0.13 | 1.41 | 1.08 | 1.43 | 0.02 | 0.40 | 0.70 | 1.05 | 1.21 | 1.03 | 10.05 | |||||||||||||
| 1964 | 1.51 | 0.02 | 0.40 | 1.40 | 1.33 | 1.70 | 0.54 | 0.67 | 0.24 | 0.19 | 1.07 | 1.71 | 10.78 | |||||||||||||
| 1965 | 1.66 | 0.09 | 0.08 | 1.24 | 0.71 | 2.35 | 0.38 | 1.50 | 0.32 | 0.17 | 1.88 | 0.06 | 10.44 | |||||||||||||
| 1966 | 0.17 | 0.66 | 0.63 | 0.64 | 0.28 | 0.23 | 0.00 | 0.08 | 0.50 | 0.16 | 1.55 | 1.81 | 6.71 | |||||||||||||
| 1967 | 0.97 | 0.00 | 0.67 | 0.97 | 0.85 | 1.67 | 0.02 | 0.00 | 0.82 | 0.51 | 0.39 | 0.33 | 7.20 | |||||||||||||
| 1968 | 0.33 | 1.65 | 0.73 | 0.20 | 0.73 | 0.26 | 0.00 | 2.46 | 0.00 | 0.31 | 1.88 | 1.57 | 10.12 | |||||||||||||
| 1969 | 2.17 | 0.85 | 0.00 | 1.04 | 0.75 | 1.04 | 0.02 | 0.00 | 0.30 | 1.54 | 0.17 | 1.82 | 9.70 | |||||||||||||
| 1970 | 3.35 | 0.26 | 0.54 | 0.31 | 0.92 | 1.50 | 0.05 | 0.00 | 1.55 | 1.11 | 1.90 | 0.94 | 12.43 | |||||||||||||
| 1971 | 1.34 | 0.15 | 1.32 | 0.16 | 0.12 | 1.05 | 0.14 | 0.00 | 0.35 | 0.29 | 1.63 | 1.19 | 7.74 | |||||||||||||
| 1972 | 0.66 | 0.36 | 0.81 | 0.50 | 0.06 | 1.74 | 0.00 | 0.33 | 0.31 | 0.24 | l | 0.00 | z | 0.00 | z | 4.77 | ||||||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 1.13 | 0.85 | 0.68 | 0.76 | 0.87 | 0.82 | 0.19 | 0.29 | 0.45 | 0.69 | 0.91 | 1.01 | 8.86 | |||||||||||||
| S.D. | 0.62 | 0.52 | 0.48 | 0.49 | 0.72 | 0.68 | 0.38 | 0.49 | 0.56 | 0.60 | 0.58 | 0.57 | 1.97 | |||||||||||||
| SKEW | 0.98 | 0.31 | 1.10 | 0.58 | 1.44 | 0.63 | 4.71 | 2.70 | 2.40 | 0.92 | 0.35 | 0.68 | 0.98 | |||||||||||||
| MAX | 3.35 | 1.90 | 2.19 | 2.25 | 3.74 | 2.35 | 2.67 | 2.46 | 2.80 | 2.37 | 2.30 | 2.90 | 15.05 | |||||||||||||
| MIN | 0.17 | 0.00 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.06 | 5.86 | |||||||||||||
| NO YRS | 61 | 61 | 62 | 60 | 59 | 61 | 62 | 62 | 62 | 62 | 61 | 60 | 50 | |||||||||||||