| 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 | 1.90 | 1.12 | 0.77 | 1.69 | 2.47 | 0.41 | 8.36 | |||||||
| 1910 | 0.10 | 0.12 | 0.04 | 0.70 | 0.04 | 0.25 | 1.30 | 5.95 | 0.87 | 0.49 | 0.20 | 0.27 | 10.33 | |||||||||||||
| 1911 | 0.14 | 1.81 | 0.27 | 0.57 | 0.60 | 0.85 | 2.75 | 4.54 | 1.95 | 1.64 | 0.30 | 1.75 | 17.17 | |||||||||||||
| 1912 | 0.06 | 1.51 | 0.40 | 0.63 | 1.63 | z | 1.04 | 2.99 | 3.74 | 0.81 | 0.09 | 0.00 | 0.29 | 11.56 | ||||||||||||
| 1913 | 0.37 | 0.51 | 0.31 | 4.57 | y | 1.96 | 4.70 | 0.49 | 1.94 | 1.06 | 0.21 | 2.13 | 2.62 | 16.30 | ||||||||||||
| 1914 | 0.19 | a | 0.27 | 0.32 | 1.90 | a | 7.55 | a | 1.78 | 5.77 | 2.20 | 0.72 | 3.74 | 0.00 | 1.10 | 25.54 | ||||||||||
| 1915 | 0.54 | 0.64 | 0.79 | 5.88 | 1.39 | 0.45 | 3.85 | 2.37 | 1.40 | 0.34 | 0.00 | 0.30 | 17.95 | |||||||||||||
| 1916 | 1.71 | 0.00 | 0.24 | 2.10 | 0.45 | 0.55 | 1.63 | 4.06 | 0.69 | 0.54 | 0.12 | 0.91 | 13.00 | |||||||||||||
| 1917 | 1.05 | 0.21 | 1.09 | 0.03 | 0.90 | 0.00 | 0.90 | 6.49 | 2.82 | 0.23 | 0.25 | 0.00 | z | 13.97 | ||||||||||||
| 1918 | 0.13 | 0.09 | 0.16 | 0.70 | 0.28 | 0.80 | 1.96 | 1.64 | 1.60 | 2.28 | 0.30 | 2.60 | 12.54 | |||||||||||||
| 1919 | 0.04 | 0.00 | 3.62 | 2.97 | 5.34 | 4.20 | 3.57 | 2.85 | 3.16 | 2.04 | 0.55 | 0.90 | 29.24 | |||||||||||||
| 1920 | 0.52 | 0.15 | 0.25 | 0.00 | 2.08 | 3.29 | 0.59 | 3.05 | 2.36 | 3.31 | 0.82 | 0.10 | 16.52 | |||||||||||||
| 1921 | 1.24 | 0.23 | 0.78 | 0.00 | 8.82 | 5.85 | 4.01 | 2.49 | 0.22 | 0.36 | 0.00 | 0.00 | 24.00 | |||||||||||||
| 1922 | 0.25 | 0.34 | 1.70 | 1.95 | 1.36 | 1.86 | 2.32 | 1.06 | 1.67 | 0.34 | 0.93 | 0.00 | 13.78 | |||||||||||||
| 1923 | 0.00 | 0.70 | 1.07 | 3.21 | 0.52 | 4.88 | 0.89 | 5.04 | 1.74 | 6.43 | 1.67 | 2.62 | 28.77 | |||||||||||||
| 1924 | 0.00 | 0.07 | 0.43 | 0.59 | 1.77 | 3.45 | 1.84 | 3.01 | 1.26 | 1.48 | 0.00 | 1.03 | 14.93 | |||||||||||||
| 1925 | 0.80 | 0.00 | 0.00 | 0.42 | 1.48 | 1.30 | 2.78 | 3.37 | 2.10 | 1.98 | 0.10 | 0.40 | 14.73 | |||||||||||||
| 1926 | 0.45 | 0.00 | 1.98 | 3.53 | 5.84 | 1.62 | 3.53 | 0.71 | 1.77 | 0.59 | 0.00 | 0.84 | a | 20.86 | ||||||||||||
| 1927 | 0.00 | 0.10 | 0.08 | 0.00 | z | 0.00 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | 0.00 | 0.04 | 0.22 | ||||||||
| 1928 | 0.00 | 0.74 | 0.07 | 1.87 | 3.21 | 2.78 | 1.59 | 2.92 | 0.12 | 2.64 | 1.99 | 1.00 | 18.93 | |||||||||||||
| 1929 | 0.00 | 0.36 | 2.05 | 0.48 | 2.63 | a | 0.38 | 0.70 | 1.90 | a | 0.67 | 0.67 | x | 1.32 | 0.10 | a | 10.59 | |||||||||
| 1930 | 0.18 | 0.00 | 0.46 | 0.22 | 0.69 | 2.53 | 3.03 | 1.79 | 0.38 | 2.26 | a | 0.95 | 0.26 | 12.75 | ||||||||||||
| 1931 | 0.70 | 1.71 | 1.83 | 1.82 | 1.46 | 0.13 | 2.71 | 1.74 | 0.87 | 0.91 | 0.19 | 0.31 | 14.38 | |||||||||||||
| 1932 | 1.20 | 0.47 | 0.00 | z | 1.33 | 1.93 | 2.99 | 1.65 | 1.48 | 3.11 | 0.49 | 0.00 | 0.68 | 15.33 | ||||||||||||
| 1933 | 0.02 | 0.37 | 0.00 | 0.25 | 1.43 | 1.63 | 3.46 | 8.70 | 0.00 | 0.20 | 0.81 | 0.00 | 16.87 | |||||||||||||
| 1934 | 0.00 | 0.08 | 0.08 | 0.06 | 0.54 | 1.90 | 1.44 | 2.12 | 0.00 | 0.55 | 0.73 | 0.03 | 7.53 | |||||||||||||
| 1935 | 0.40 | 0.00 | 0.47 | 0.02 | 3.35 | 0.74 | 1.71 | 3.19 | 0.97 | 0.27 | 1.15 | 0.24 | 12.51 | |||||||||||||
| 1936 | 0.81 | 0.12 | 0.00 | 0.00 | 2.53 | 1.18 | 4.87 | 2.12 | 1.65 | 0.15 | 0.00 | 0.39 | 13.82 | |||||||||||||
| 1937 | 0.06 | 0.29 | 1.38 | 1.14 | 4.50 | 1.51 | 0.45 | 1.90 | 2.00 | 2.19 | 0.04 | 0.56 | 16.02 | |||||||||||||
| 1938 | 0.25 | 1.74 | 0.25 | 0.60 | 3.46 | 2.56 | 1.96 | 0.20 | 1.94 | 1.27 | z | 0.26 | 0.71 | 13.93 | ||||||||||||
| 1939 | 1.08 | 0.97 | 0.59 | 0.93 | 2.54 | 0.00 | 1.72 | 1.55 | 1.35 | 0.98 | 0.30 | 1.15 | 13.16 | |||||||||||||
| 1940 | 0.33 | 0.67 | 0.92 | 0.68 | 3.04 | 0.33 | 0.63 | 2.55 | 0.55 | 0.00 | 3.12 | 0.39 | 13.21 | |||||||||||||
| 1941 | 0.36 | 0.38 | 2.86 | 3.03 | 7.78 | 3.95 | 3.43 | 1.70 | 6.13 | 5.56 | 0.18 | 0.10 | 35.46 | |||||||||||||
| 1942 | 0.05 | 0.00 | 0.95 | 5.24 | 1.55 | 0.78 | 1.15 | 1.41 | 2.75 | 2.60 | 0.00 | 0.55 | 17.03 | |||||||||||||
| 1943 | 0.00 | 0.00 | 0.00 | 0.20 | 1.54 | 3.28 | 2.34 | 0.80 | 0.05 | 0.12 | 0.18 | 5.08 | 13.59 | |||||||||||||
| 1944 | 0.58 | 0.55 | 0.00 | 0.92 | 4.12 | 1.00 | 1.81 | 4.81 | 1.03 | 0.27 | 0.31 | 0.79 | 16.19 | |||||||||||||
| 1945 | 0.40 | 0.00 | 0.30 | 0.48 | 1.97 | 0.36 | 1.26 | 4.35 | 1.80 | 1.47 | 0.00 | 0.00 | 12.39 | |||||||||||||
| 1946 | 0.00 | 0.02 | 0.00 | 0.00 | 1.24 | 0.28 | 1.56 | 1.06 | 1.80 | 1.22 | 0.00 | z | 0.00 | 7.18 | ||||||||||||
| 1947 | 0.10 | 0.10 | 0.85 | 0.00 | 5.11 | 0.00 | 1.10 | z | 1.63 | 0.00 | 0.16 | 0.65 | 1.10 | 9.70 | ||||||||||||
| 1948 | 0.53 | 1.09 | 1.18 | 0.00 | 1.44 | j | 1.43 | d | 1.53 | 3.21 | 0.00 | 0.47 | 1.06 | 0.00 | 10.50 | |||||||||||
| 1949 | 0.93 | 1.23 | 0.40 | 1.90 | 1.88 | 4.95 | 5.49 | 1.58 | 2.10 | 0.28 | 0.04 | 0.33 | 21.11 | |||||||||||||
| 1950 | 0.00 | 0.00 | 0.00 | 0.43 | 0.28 | 2.29 | 8.86 | 1.93 | 2.47 | 0.20 | 0.00 | 0.18 | a | 16.64 | ||||||||||||
| 1951 | 0.62 | 0.08 | 0.68 | 0.15 | 1.29 | 2.18 | 1.08 | 0.05 | 0.13 | 0.78 | 0.10 | 0.20 | 7.34 | |||||||||||||
| 1952 | 0.33 | 0.27 | 0.94 | 2.23 | 0.32 | 1.49 | 2.47 | 2.56 | 0.46 | 0.00 | 1.00 | 0.43 | 12.50 | |||||||||||||
| 1953 | 0.18 | 0.33 | 0.39 | 0.11 | 1.48 | 0.26 | 3.85 | 2.80 | 0.00 | 0.56 | 0.53 | 0.96 | 11.45 | |||||||||||||
| 1954 | 0.20 | 0.12 | 0.02 | 0.32 | 2.81 | 0.18 | 1.70 | 1.54 | 1.66 | 3.00 | 0.53 | 0.01 | 12.09 | |||||||||||||
| 1955 | 0.26 | 0.07 | 0.09 | 0.70 | 2.47 | a | 0.35 | 2.75 | 1.14 | 3.23 | 0.14 | 0.10 | 0.15 | 11.45 | ||||||||||||
| 1956 | 0.00 | 0.66 | a | 0.05 | a | 0.30 | 2.56 | 1.74 | 2.97 | 1.82 | 0.00 | 0.00 | z | 0.00 | z | 0.00 | z | 10.10 | ||||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 0.37 | 0.41 | 0.66 | 1.12 | 2.40 | 1.74 | 2.42 | 2.56 | 1.37 | 1.23 | 0.55 | 0.69 | 16.27 | |||||||||||||
| S.D. | 0.40 | 0.50 | 0.79 | 1.37 | 2.08 | 1.53 | 1.61 | 1.67 | 1.18 | 1.44 | 0.73 | 0.94 | 6.04 | |||||||||||||
| SKEW | 1.35 | 1.53 | 1.84 | 1.78 | 1.43 | 0.93 | 1.70 | 1.49 | 1.44 | 1.82 | 1.76 | 2.75 | 1.37 | |||||||||||||
| MAX | 1.71 | 1.81 | 3.62 | 5.88 | 8.82 | 5.85 | 8.86 | 8.70 | 6.13 | 6.43 | 3.12 | 5.08 | 35.46 | |||||||||||||
| MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.45 | 0.05 | 0.00 | 0.00 | 0.00 | 0.00 | 7.34 | |||||||||||||
| NO YRS | 47 | 47 | 46 | 45 | 45 | 46 | 46 | 47 | 47 | 45 | 46 | 46 | 36 | |||||||||||||