| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1927 | 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 | 1.33 | 1.17 | 0.29 | 2.79 | ||||
| 1928 | 1.29 | v | 0.14 | 0.97 | 0.85 | s | 0.02 | 0.40 | 0.25 | 0.06 | 0.05 | 0.32 | 0.85 | 2.68 | 5.74 | |||||||||||
| 1929 | 1.88 | s | 0.05 | 0.41 | 0.05 | 0.11 | 0.02 | 0.00 | 0.00 | z | 0.09 | 0.00 | z | 0.10 | 1.66 | 2.49 | ||||||||||
| 1930 | 1.24 | 1.56 | 0.06 | 1.21 | u | 0.12 | z | 0.05 | x | 0.00 | 0.00 | 0.06 | z | 0.13 | z | 0.00 | z | 0.00 | z | 2.86 | ||||||
| 1931 | 0.00 | z | 0.00 | z | 1.01 | z | 0.00 | z | 0.00 | z | 2.80 | 0.00 | 0.00 | 0.30 | 0.00 | z | 0.00 | z | 0.00 | z | 3.10 | |||||
| 1932 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | 0.00 | 0.25 | 0.58 | y | 1.60 | 1.85 | |||||
| 1933 | 0.95 | 0.50 | 1.50 | 0.35 | z | 0.70 | 0.45 | 0.00 | 0.00 | 0.34 | 0.15 | 0.03 | 1.76 | 6.38 | ||||||||||||
| 1934 | 0.40 | 0.00 | z | 0.05 | 0.06 | 0.00 | 0.00 | 0.00 | 0.00 | 0.16 | 1.97 | 1.86 | 0.95 | 5.45 | ||||||||||||
| 1935 | 0.64 | 0.14 | 0.27 | 0.97 | 0.00 | z | 0.31 | z | 0.04 | z | 0.00 | z | 0.00 | z | 0.45 | 0.43 | z | 1.18 | 3.65 | |||||||
| 1936 | 2.06 | 0.54 | 0.15 | z | 0.03 | z | 0.30 | 1.57 | y | 0.00 | z | 0.00 | z | 0.07 | z | 0.03 | z | 0.00 | z | 0.16 | 3.06 | |||||
| 1937 | 1.12 | 1.25 | 1.94 | 1.72 | 0.00 | z | 2.15 | 0.00 | z | 0.45 | 0.53 | z | 0.18 | z | 1.89 | 1.28 | 11.80 | |||||||||
| 1938 | 0.71 | t | 2.17 | o | 1.96 | 0.02 | z | 0.00 | 0.80 | y | 0.33 | z | 0.10 | z | 0.05 | y | 0.00 | z | 0.44 | 0.72 | 3.12 | |||||
| 1939 | 0.43 | 1.26 | r | 0.23 | v | 0.00 | z | 0.54 | z | 0.13 | y | 0.04 | z | 0.15 | z | 0.10 | z | 0.04 | z | 0.00 | z | 2.20 | 2.63 | |||
| 1940 | 1.80 | 3.99 | 0.30 | t | 0.88 | 0.02 | 0.17 | 0.96 | 0.00 | z | 0.41 | a | 0.03 | z | 1.29 | 2.99 | 12.51 | |||||||||
| 1941 | 2.20 | 0.79 | 0.52 | 0.82 | 0.27 | 0.15 | 0.10 | 1.03 | 0.50 | 0.00 | z | 1.71 | 2.67 | 10.76 | ||||||||||||
| 1942 | 1.42 | 1.75 | 0.00 | 0.18 | 0.34 | 0.29 | 0.00 | 0.00 | 0.00 | 0.00 | 3.33 | 2.38 | 9.69 | |||||||||||||
| 1943 | 0.85 | 0.15 | 0.71 | 0.78 | 0.00 | 1.19 | 0.00 | 0.27 | 0.00 | 1.41 | 0.00 | 0.08 | 5.44 | |||||||||||||
| 1944 | 0.52 | 0.72 | 0.24 | 1.55 | 0.06 | 0.81 | 0.05 | 0.00 | 0.52 | 0.04 | 0.00 | z | 0.03 | 4.54 | ||||||||||||
| 1945 | 0.59 | 1.54 | 0.49 | 0.60 | 0.00 | z | 0.00 | z | 0.00 | 0.00 | 0.00 | 0.51 | 1.11 | 2.98 | 7.82 | |||||||||||
| 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 | 0.75 | 0.33 | 0.44 | 0.07 | 1.70 | 0.23 | 0.00 | 0.79 | 1.80 | 0.41 | 0.18 | 6.70 | ||||||||||||
| 1948 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 2.60 | 0.31 | a | 0.43 | 0.42 | 0.32 | 1.17 | k | 1.36 | f | 4.08 | |||||
| 1949 | 0.20 | 1.94 | 1.47 | 0.00 | 0.00 | 0.00 | 0.05 | 0.00 | 0.27 | 0.05 | 1.14 | 0.00 | r | 5.12 | ||||||||||||
| 1950 | 2.19 | 1.30 | 0.70 | 0.13 | 0.00 | 1.81 | 0.09 | 0.00 | 0.00 | 1.73 | 1.24 | 1.70 | 10.89 | |||||||||||||
| 1951 | 1.56 | 0.64 | 0.16 | h | 0.00 | 0.66 | 1.95 | 1.00 | 0.20 | 0.00 | u | 0.00 | z | 0.00 | z | 0.38 | m | 6.01 | ||||||||
| 1952 | 1.24 | 0.93 | 0.11 | 0.00 | 0.28 | 0.81 | 0.02 | 0.06 | 0.00 | 0.00 | 0.44 | 1.27 | n | 3.89 | ||||||||||||
| 1953 | 2.58 | 0.11 | 0.19 | 1.09 | 0.99 | 0.31 | 0.00 | 0.41 | 0.00 | 0.00 | 0.68 | e | 0.00 | z | 6.36 | |||||||||||
| 1954 | 3.57 | 0.59 | 0.56 | 0.00 | a | 0.00 | 0.24 | 0.00 | 0.30 | 0.00 | 0.37 | 0.40 | g | 0.06 | u | 5.63 | ||||||||||
| 1955 | 0.47 | 0.34 | 0.59 | 1.14 | 0.25 | 0.00 | 0.26 | 0.00 | 0.00 | z | 0.00 | z | 2.71 | 4.08 | 9.84 | |||||||||||
| 1956 | 3.66 | 0.93 | 0.12 | 0.00 | 0.73 | 0.97 | 0.19 | 0.21 | 0.55 | 0.29 | 0.14 | 0.28 | x | 7.79 | ||||||||||||
| 1957 | 0.75 | b | 1.03 | 1.67 | g | 0.97 | 0.84 | 0.26 | 0.00 | 0.13 | 0.75 | 1.67 | 0.00 | e | 0.59 | 6.99 | ||||||||||
| 1958 | 1.56 | 1.26 | 0.80 | 0.46 | 0.00 | 0.35 | 1.38 | 0.04 | 0.00 | 0.08 | 0.90 | 0.44 | 7.27 | |||||||||||||
| 1959 | 1.52 | 1.48 | 0.49 | 0.00 | 0.08 | 0.29 | 0.00 | 0.00 | 0.63 | 0.00 | e | 0.25 | 0.13 | 4.87 | ||||||||||||
| 1960 | 0.77 | 1.52 | 0.58 | 0.96 | 0.32 | 0.00 | 0.00 | 0.29 | 0.20 | 0.00 | 1.74 | 0.38 | z | 6.38 | ||||||||||||
| 1961 | 0.53 | 1.86 | 1.41 | 0.73 | 0.62 | 0.35 | 0.17 | 0.00 | 0.00 | 0.21 | 0.62 | j | 1.24 | 7.12 | ||||||||||||
| 1962 | 0.07 | 1.09 | 0.21 | 0.52 | 0.82 | 0.00 | 0.00 | 0.22 | 0.33 | 1.41 | 0.00 | z | 0.30 | 4.97 | ||||||||||||
| 1963 | 0.65 | 1.26 | 0.94 | 1.48 | 0.44 | 0.00 | 1.16 | 0.17 | 0.06 | 0.00 | 1.44 | 0.77 | w | 7.60 | ||||||||||||
| 1964 | 0.63 | 0.00 | 0.11 | 0.06 | 0.00 | 0.82 | 0.09 | 0.00 | 0.00 | 0.25 | 0.26 | v | 4.85 | 6.81 | ||||||||||||
| 1965 | 0.00 | z | 0.00 | z | 0.00 | z | 0.14 | 0.00 | 0.48 | 0.55 | 0.08 | 0.00 | 0.00 | z | 0.00 | z | 0.00 | z | 1.25 | |||||||
| 1966 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.15 | 0.02 | 0.78 | 0.00 | 0.59 | 0.35 | 2.54 | 1.71 | 6.14 | |||||||||
| 1967 | 0.00 | z | 0.01 | 0.90 | 1.31 | 0.16 | 0.67 | 0.00 | 0.00 | 0.02 | 0.47 | 0.29 | 0.84 | 4.67 | ||||||||||||
| 1968 | 2.20 | 0.88 | 0.09 | 0.02 | 0.25 | 0.00 | 0.04 | 1.69 | 0.28 | 0.72 | 1.83 | 2.93 | 10.93 | |||||||||||||
| 1969 | 1.96 | a | 1.82 | 0.27 | 0.09 | 0.54 | 0.41 | 0.00 | 0.02 | 0.29 | 0.21 | 0.21 | 3.01 | 8.83 | ||||||||||||
| 1970 | 4.89 | 0.51 | 0.62 | 0.00 | z | 0.00 | z | 0.05 | 0.00 | 0.00 | 0.09 | 0.38 | 0.90 | 2.16 | 9.60 | |||||||||||
| 1971 | 1.87 | 0.00 | a | 2.33 | 1.22 | 0.37 | 0.19 | 0.00 | 0.00 | 0.72 | 0.15 | 1.25 | 2.02 | 10.12 | ||||||||||||
| 1972 | 1.11 | 0.78 | 1.21 | 0.15 | 0.74 | 0.38 | 0.11 | 0.60 | 0.06 | 0.05 | 1.04 | 2.01 | 8.24 | |||||||||||||
| 1973 | 1.43 | 0.44 | 0.00 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.99 | 0.97 | 4.45 | 3.36 | 11.66 | |||||||||||||
| 1974 | 3.10 | 0.91 | 1.44 | 1.55 | 0.51 | 0.13 | 0.28 | 0.00 | 0.00 | 0.58 | 0.66 | 1.65 | 10.81 | |||||||||||||
| 1975 | 3.14 | 2.47 | 0.61 | 0.40 | 0.15 | 0.24 | 0.12 | 1.46 | 0.00 | 0.91 | 1.05 | 0.76 | 11.31 | |||||||||||||
| 1976 | 0.81 | 0.94 | 0.37 | 0.71 | 0.08 | 0.06 | 0.23 | p | 0.56 | h | 0.14 | 0.03 | 0.03 | 0.12 | 3.29 | |||||||||||
| 1977 | 0.21 | 0.66 | 0.47 | 0.00 | 0.46 | 0.48 | 0.00 | 0.65 | 0.59 | 0.29 | 1.02 | 2.89 | 7.72 | |||||||||||||
| 1978 | 3.61 | 1.49 | 0.54 | 0.48 | 0.12 | 0.30 | 0.82 | 0.20 | 0.32 | 0.00 | 0.97 | 0.00 | z | 8.85 | ||||||||||||
| 1979 | 0.90 | 0.91 | 0.53 | 0.40 | 0.18 | 0.04 | 0.00 | 0.59 | 0.19 | 1.09 | 0.18 | k | 1.24 | 6.07 | ||||||||||||
| 1980 | 2.92 | 2.10 | 0.36 | 0.18 | d | 0.88 | 1.42 | 0.00 | 0.15 | 0.02 | b | 0.27 | b | 1.01 | 3.90 | 13.21 | ||||||||||
| 1981 | 0.16 | e | 0.00 | z | 0.16 | 0.00 | 0.00 | z | 0.52 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.84 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 1.50 | 1.00 | 0.64 | 0.53 | 0.29 | 0.57 | 0.20 | 0.22 | 0.24 | 0.51 | 1.11 | 1.69 | 9.36 | |||||||||||||
| S.D. | 1.14 | 0.78 | 0.57 | 0.53 | 0.30 | 0.72 | 0.35 | 0.37 | 0.27 | 0.58 | 0.96 | 1.24 | 2.41 | |||||||||||||
| SKEW | 1.01 | 1.36 | 1.24 | 0.68 | 0.80 | 1.66 | 1.99 | 2.49 | 0.94 | 1.20 | 1.44 | 0.51 | -0.44 | |||||||||||||
| MAX | 4.89 | 3.99 | 2.33 | 1.72 | 0.99 | 2.80 | 1.38 | 1.69 | 0.99 | 1.97 | 4.45 | 4.85 | 13.21 | |||||||||||||
| MIN | 0.07 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 4.87 | |||||||||||||
| NO YRS | 43 | 44 | 43 | 42 | 43 | 46 | 45 | 45 | 44 | 41 | 38 | 40 | 14 | |||||||||||||