YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1894 | ----- | z | ----- | z | ----- | z | 0.47 | 0.12 | 0.33 | 0.18 | 0.50 | 1.13 | ----- | z | 0.20 | 0.19 | ----- | z | ||||||||
1895 | 0.20 | 0.20 | 0.22 | ----- | z | ----- | z | ----- | z | 0.34 | v | 0.43 | 0.69 | 0.14 | ----- | z | ----- | z | ----- | z | ||||||
1896 | ----- | z | ----- | z | ----- | z | ----- | z | 0.20 | ----- | z | ----- | z | 0.50 | 1.00 | ----- | z | ----- | z | ----- | z | ----- | z | |||
1897 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1898 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 0.84 | 1.10 | 0.12 | 0.40 | ----- | z | ||||
1911 | 1.53 | 0.32 | 0.17 | 0.37 | 0.36 | 0.82 | ----- | z | 0.26 | 0.91 | 1.50 | 0.53 | 0.40 | ----- | z | |||||||||||
1912 | 0.40 | 0.23 | 0.38 | 0.50 | 0.25 | ----- | z | 0.70 | ----- | z | 0.50 | 0.69 | 0.20 | 0.25 | ----- | z | ||||||||||
1913 | 0.28 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | 0.13 | 0.33 | 0.70 | 0.20 | 0.50 | 0.32 | 0.28 | 0.75 | ----- | z | ||||||||
1937 | 0.15 | ----- | z | 0.35 | 0.31 | 0.50 | 0.26 | 0.64 | 0.28 | 0.31 | 0.50 | 0.35 | 0.55 | ----- | z | |||||||||||
1938 | 0.11 | 0.22 | 0.74 | 0.25 | 1.53 | 0.48 | 0.09 | 0.61 | 0.60 | 0.12 | 0.83 | 0.12 | r | 1.53 | r | |||||||||||
1939 | 0.15 | 0.16 | 0.38 | a | 0.14 | 0.22 | 0.21 | 0.22 | 0.13 | 0.98 | 0.32 | 0.23 | 0.12 | 0.98 | a | |||||||||||
1940 | 0.23 | 0.30 | 0.42 | a | 0.56 | 0.30 | 0.07 | 0.24 | 0.45 | 0.46 | 0.88 | 0.27 | 0.16 | 0.88 | a | |||||||||||
1941 | 0.21 | 0.17 | 0.56 | 0.44 | b | 0.27 | 0.31 | 0.88 | n | 0.38 | 0.67 | 1.19 | o | 0.14 | 0.19 | ----- | z | |||||||||
1942 | 0.27 | o | 0.18 | 0.15 | 0.34 | 0.32 | 0.29 | 0.55 | 0.13 | 0.37 | 0.97 | u | 0.19 | 0.13 | ----- | z | ||||||||||
1943 | 0.20 | 0.27 | 0.23 | 0.26 | 0.70 | 1.33 | 0.04 | 0.61 | 0.04 | 0.36 | 0.19 | 0.18 | 1.33 | |||||||||||||
1944 | 0.29 | 0.21 | 0.29 | 0.79 | 1.64 | 0.36 | 0.16 | a | 0.40 | 0.69 | 0.20 | 0.63 | 0.29 | 1.64 | a | |||||||||||
1945 | 0.29 | 0.76 | 0.90 | 0.31 | 1.14 | 1.62 | 0.81 | 0.61 | 0.22 | 0.25 | 0.45 | 0.17 | 1.62 | |||||||||||||
1946 | 0.08 | 0.19 | 0.38 | 0.60 | 0.69 | 0.69 | 0.42 | 1.45 | 0.25 | 0.95 | 0.45 | 0.21 | 1.45 | |||||||||||||
1947 | 0.17 | 0.42 | 0.20 | 0.32 | 0.38 | 0.95 | 0.52 | 0.47 | 0.74 | 0.47 | 0.20 | 0.27 | 0.95 | |||||||||||||
1948 | 0.19 | a | 0.20 | 0.23 | 0.40 | 0.09 | 0.44 | 0.22 | 0.25 | 0.49 | 0.53 | 0.19 | 0.63 | 0.63 | a | |||||||||||
1949 | 0.40 | 0.16 | 0.50 | 0.39 | 0.75 | 0.62 | 0.23 | 0.36 | 0.44 | 0.71 | 0.17 | 0.21 | 0.75 | |||||||||||||
1950 | 0.64 | 0.08 | 0.17 | 1.24 | 0.33 | 0.12 | 0.29 | 0.15 | 0.35 | 0.56 | 0.43 | 0.37 | 1.24 | |||||||||||||
1951 | 0.57 | 0.38 | 0.15 | 0.72 | 0.88 | 0.29 | 0.37 | 0.69 | 0.11 | 0.65 | 0.20 | 1.13 | 1.13 | |||||||||||||
1952 | 0.36 | 0.12 | b | 0.41 | 0.32 | 1.05 | 0.69 | 0.16 | 0.72 | 0.05 | 0.00 | 0.14 | 0.33 | 1.05 | b | |||||||||||
1953 | 0.18 | e | 0.12 | 0.28 | 0.58 | a | 0.45 | 0.32 | e | 0.56 | 1.72 | 0.07 | 0.42 | 0.53 | 0.15 | 1.72 | k | |||||||||
1954 | 0.26 | 0.25 | 0.31 | 0.09 | 1.02 | 0.26 | 0.29 | 1.11 | 0.73 | a | 0.57 | 0.46 | c | 0.08 | e | 1.11 | i | |||||||||
1955 | 0.41 | 0.32 | 0.08 | 0.25 | 0.34 | j | 0.15 | e | 0.19 | b | 1.11 | 0.48 | 0.38 | a | 0.45 | 0.36 | h | ----- | z | |||||||
1956 | 0.75 | e | 0.32 | 0.15 | 0.22 | 0.20 | 0.00 | f | 0.52 | 0.25 | 0.06 | 0.64 | 0.35 | 0.31 | d | 0.75 | o | |||||||||
1957 | 0.41 | d | 0.32 | 0.44 | 0.30 | 0.94 | 0.89 | 0.33 | 0.40 | 0.12 | 0.60 | 0.33 | 0.17 | a | 0.94 | e | ||||||||||
1958 | 0.08 | 0.24 | 0.36 | 0.21 | 0.15 | 0.13 | 0.06 | 0.19 | 0.68 | 0.09 | 0.41 | 0.19 | 0.68 | |||||||||||||
1959 | 0.14 | 0.16 | 0.31 | 0.30 | 0.24 | 0.65 | 0.50 | 0.93 | 0.60 | 1.29 | 0.43 | 0.17 | 1.29 | |||||||||||||
1960 | 0.12 | 0.38 | 0.29 | 0.26 | 0.21 | 0.28 | 0.31 | 0.30 | 0.19 | 0.35 | 0.39 | 0.19 | 0.39 | |||||||||||||
1961 | 0.09 | 0.16 | 0.29 | 0.41 | 0.76 | 0.17 | 0.13 | 0.28 | 1.25 | 0.19 | 0.23 | 0.20 | 1.25 | |||||||||||||
1962 | 0.52 | 0.66 | 0.09 | 0.62 | 0.13 | 0.16 | 0.08 | 0.20 | 0.31 | 0.38 | 0.62 | 0.23 | 0.66 | |||||||||||||
1963 | 0.07 | 0.22 | 0.39 | 1.07 | 0.08 | 0.55 | 0.18 | 1.10 | 0.74 | 0.34 | 0.45 | 0.15 | 1.10 | |||||||||||||
1964 | 0.26 | 0.10 | 0.17 | 0.29 | 0.20 | 0.43 | 0.26 | 0.79 | 0.60 | ----- | z | 0.55 | 0.46 | ----- | z | |||||||||||
1965 | 0.41 | 0.19 | 0.12 | 0.57 | 0.63 | 0.22 | 0.28 | 0.52 | ----- | z | 0.10 | 0.71 | 0.37 | ----- | z | |||||||||||
1966 | 0.11 | 0.15 | 0.27 | 0.31 | 0.38 | 0.05 | 0.39 | 0.34 | 0.57 | 1.47 | 0.11 | 0.73 | 1.47 | |||||||||||||
1967 | 0.30 | 0.14 | 0.26 | 0.33 | 0.66 | 0.42 | 1.05 | 0.75 | 0.60 | 0.40 | 0.61 | 0.48 | 1.05 | |||||||||||||
1968 | 0.34 | 0.22 | 0.17 | 0.51 | 0.39 | 0.18 | 0.30 | 0.53 | 0.21 | 0.61 | 0.31 | 0.22 | 0.61 | |||||||||||||
1969 | 0.29 | 0.32 | 0.18 | 0.30 | 0.01 | 1.12 | 0.63 | 0.85 | 0.36 | 0.78 | 0.43 | 0.44 | 1.12 | |||||||||||||
1970 | 0.21 | 0.28 | 0.14 | 0.28 | 0.15 | 0.96 | 0.37 | 1.96 | 0.38 | 0.98 | 0.88 | 0.14 | 1.96 | |||||||||||||
1971 | 0.35 | 0.35 | 0.36 | 0.56 | 0.45 | 0.04 | 0.03 | 0.06 | 0.54 | 0.60 | 0.39 | 0.41 | 0.60 | |||||||||||||
1972 | 0.13 | 0.36 | 0.12 | 0.26 | 0.22 | 0.22 | 0.18 | 0.38 | 0.52 | 0.44 | 0.31 | 0.44 | 0.52 | |||||||||||||
1973 | 0.18 | 0.08 | 0.37 | 0.17 | 0.54 | ----- | z | 0.49 | 0.29 | 0.33 | 0.29 | 1.10 | 0.34 | ----- | z | |||||||||||
1974 | 0.48 | 0.33 | 0.42 | 0.28 | 0.00 | 0.84 | 0.30 | 0.14 | 0.42 | 0.58 | 0.14 | 0.25 | 0.84 | |||||||||||||
1975 | 0.31 | 0.31 | 0.27 | 0.28 | 0.43 | 0.17 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||||
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.82 | 0.34 | 0.55 | 0.31 | 0.37 | ----- | z | ----- | z | ----- | z | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.31 | 0.26 | 0.30 | 0.41 | 0.47 | 0.47 | 0.35 | 0.55 | 0.50 | 0.54 | 0.39 | 0.32 | 1.05 | |||||||||||||
S.D. | 0.25 | 0.14 | 0.17 | 0.23 | 0.39 | 0.37 | 0.23 | 0.42 | 0.29 | 0.35 | 0.22 | 0.21 | 0.39 | |||||||||||||
SKEW | 3.03 | 1.74 | 1.48 | 1.77 | 1.30 | 1.22 | 0.95 | 1.59 | 0.48 | 1.05 | 1.14 | 1.87 | 0.37 | |||||||||||||
MAX | 1.53 | 0.76 | 0.90 | 1.24 | 1.64 | 1.62 | 1.05 | 1.96 | 1.25 | 1.50 | 1.10 | 1.13 | 1.96 | |||||||||||||
MIN | 0.07 | 0.08 | 0.08 | 0.09 | 0.00 | 0.04 | 0.03 | 0.06 | 0.04 | 0.00 | 0.11 | 0.08 | 0.39 | |||||||||||||
YRS | 42 | 41 | 42 | 42 | 43 | 41 | 41 | 44 | 45 | 41 | 43 | 41 | 26 |