YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1899 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.18 | 0.57 | 1.01 | 0.15 | 0.46 | ----- | z | |||||
1900 | 0.20 | 0.20 | 0.50 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1914 | 0.52 | 0.48 | 0.44 | 0.81 | 0.52 | 0.68 | 0.57 | 0.38 | 0.54 | 0.35 | 0.05 | 0.31 | 0.81 | |||||||||||||
1915 | 0.45 | 0.37 | 0.15 | 0.72 | n | 0.35 | 0.64 | 0.14 | 0.62 | 0.57 | 0.50 | 0.45 | 0.28 | 0.72 | n | |||||||||||
1916 | 0.59 | 0.55 | 0.70 | 0.44 | 0.51 | x | 0.00 | 0.19 | 0.69 | 0.72 | 0.42 | 0.41 | 0.42 | 0.72 | x | |||||||||||
1917 | 0.19 | 0.23 | a | 0.53 | 0.34 | 1.07 | 0.28 | 0.23 | p | 0.48 | 0.30 | ----- | z | 0.18 | 0.32 | ----- | z | |||||||||
1918 | 0.60 | 0.85 | a | 1.31 | 0.25 | 0.50 | 0.30 | 0.23 | 0.24 | 0.73 | 0.95 | b | 0.53 | b | 0.30 | 1.31 | e | |||||||||
1919 | 0.31 | 0.27 | 0.51 | 1.05 | 0.60 | 0.09 | ----- | 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 | 0.24 | 0.46 | 0.19 | 0.78 | 0.12 | 1.60 | 0.54 | ----- | z | |||||||
1935 | 1.50 | 0.52 | 0.47 | 1.16 | 0.92 | 0.09 | 2.00 | 0.40 | 0.90 | 0.25 | 0.37 | 0.81 | 2.00 | |||||||||||||
1936 | 0.79 | 1.60 | 0.40 | 0.32 | 0.51 | 0.52 | 0.44 | 0.50 | 0.40 | 0.40 | 0.55 | 0.51 | 1.60 | |||||||||||||
1937 | 0.23 | 0.95 | 0.19 | 0.68 | 1.00 | 0.29 | 0.58 | 0.68 | 0.31 | 0.98 | 0.50 | 0.60 | 1.00 | |||||||||||||
1938 | 0.18 | 0.24 | 0.52 | 0.93 | 0.73 | 0.54 | 0.28 | 0.22 | 0.39 | 0.45 | 0.53 | 0.68 | 0.93 | |||||||||||||
1939 | 0.60 | 0.67 | 0.42 | 0.18 | 0.22 | 0.25 | 0.59 | 0.28 | 0.76 | 0.21 | 0.19 | 0.36 | 0.76 | |||||||||||||
1940 | 0.45 | 0.33 | 0.39 | 0.26 | 0.34 | 0.05 | 0.33 | 0.40 | 0.47 | 0.44 | 0.64 | 0.18 | 0.64 | |||||||||||||
1941 | 0.45 | 0.40 | 0.85 | 0.90 | 0.65 | u | 0.30 | 0.33 | 0.33 | 1.38 | 0.60 | a | 0.21 | 0.50 | a | 1.38 | w | |||||||||
1942 | 0.45 | 0.35 | l | 0.65 | 0.96 | b | 0.15 | 0.50 | 0.25 | 0.37 | 0.32 | 0.75 | 0.60 | 0.29 | 0.96 | n | ||||||||||
1943 | 0.74 | 0.85 | 1.10 | a | ----- | z | 0.80 | 1.81 | 0.64 | 0.60 | 0.48 | 0.55 | 0.47 | 0.15 | ----- | z | ||||||||||
1944 | 0.40 | 0.37 | 0.66 | 0.50 | 0.15 | 0.62 | 0.26 | 0.40 | 0.06 | 0.40 | 0.35 | 0.35 | 0.66 | |||||||||||||
1945 | 0.55 | 0.55 | 0.35 | 0.75 | 0.52 | 0.06 | 1.00 | 0.67 | 0.75 | 0.80 | 0.55 | 0.95 | 1.00 | |||||||||||||
1946 | 0.55 | a | 0.35 | a | 0.25 | 0.75 | u | 0.77 | 0.33 | 0.30 | 0.59 | 0.35 | 0.44 | 0.61 | a | 0.60 | a | 0.77 | y | |||||||
1947 | 0.76 | 1.12 | 0.27 | 0.40 | 0.36 | 1.30 | 0.26 | 0.71 | u | 0.94 | 0.75 | 0.49 | 0.32 | r | ----- | z | ||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.28 | 0.32 | 0.82 | 0.55 | 0.57 | ----- | z | |||||
1949 | 0.29 | a | 0.15 | 0.63 | 0.40 | 0.31 | a | 1.11 | 1.06 | 0.75 | 0.53 | 0.48 | g | 0.26 | 0.20 | 1.11 | i | |||||||||
1950 | 0.65 | g | 0.33 | 0.43 | 0.30 | 0.70 | 0.06 | 0.27 | 0.32 | 0.61 | 0.25 | 0.34 | 0.42 | 0.70 | g | |||||||||||
1951 | 1.10 | 0.43 | 0.33 | 0.42 | 0.46 | 0.25 | 0.52 | 0.81 | 0.42 | 0.63 | 0.47 | 1.52 | 1.52 | |||||||||||||
1952 | 0.43 | 0.28 | 0.53 | 0.31 | 0.56 | 0.27 | 0.46 | 0.43 | 0.31 | 0.00 | 0.29 | 0.17 | 0.56 | |||||||||||||
1953 | 0.16 | 0.42 | 0.84 | 0.45 | 0.44 | 0.51 | 0.40 | 0.38 | 0.07 | 0.42 | 0.39 | 0.19 | 0.84 | |||||||||||||
1954 | 0.53 | 0.24 | 0.29 | 0.36 | 0.31 | 0.11 | 0.25 | 0.40 | 0.59 | 0.76 | 0.45 | 0.66 | 0.76 | |||||||||||||
1955 | 0.14 | 0.68 | 0.46 | 0.11 | 0.52 | 0.40 | 0.37 | 0.97 | 0.13 | 0.61 | b | 0.87 | d | 0.18 | 0.97 | f | ||||||||||
1956 | 0.31 | 0.36 | 0.29 | 0.66 | 0.25 | 0.18 | 0.57 | 0.37 | 0.12 | 0.33 | 0.38 | 0.57 | 0.66 | |||||||||||||
1957 | 0.78 | 0.14 | 0.50 | 1.22 | 1.36 | 0.86 | 0.43 | 0.40 | 0.21 | 0.32 | 0.51 | 0.22 | 1.36 | |||||||||||||
1958 | 0.15 | 0.27 | 0.35 | 0.55 | 0.22 | 0.66 | 0.11 | 0.18 | 0.32 | 0.31 | 0.38 | 0.23 | 0.66 | |||||||||||||
1959 | 0.30 | 0.46 | 0.53 | 0.82 | 1.20 | 0.72 | 0.50 | 0.79 | 0.97 | 1.00 | 0.58 | 0.17 | 1.20 | |||||||||||||
1960 | 0.31 | 0.55 | 0.42 | a | 0.30 | 0.49 | 0.42 | 0.60 | 0.46 | 0.22 | 0.41 | 0.39 | 0.56 | 0.60 | a | |||||||||||
1961 | 0.16 | 0.38 | 0.29 | 0.33 | 0.62 | 0.08 | 0.31 | 0.39 | 1.24 | 1.06 | 0.46 | 0.34 | 1.24 | |||||||||||||
1962 | 0.53 | 0.70 | 0.28 | 1.03 | 0.94 | 0.15 | 0.14 | 0.32 | 0.33 | 0.35 | 0.36 | 0.35 | 1.03 | |||||||||||||
1963 | 0.42 | 0.32 | 0.89 | 0.15 | 0.25 | 0.62 | 0.17 | 0.65 | 0.58 | 1.13 | 0.31 | 0.40 | 1.13 | |||||||||||||
1964 | 0.32 | 0.46 | 0.37 | 0.37 | 0.47 | 0.63 | 0.78 | 1.29 | 0.30 | 0.28 | 0.56 | 1.14 | 1.29 | |||||||||||||
1965 | 0.44 | 0.30 | 1.73 | 0.32 | 0.36 | 0.58 | 0.59 | 0.95 | 0.88 | 0.15 | 0.73 | 0.55 | 1.73 | |||||||||||||
1966 | 0.25 | ----- | z | 0.28 | 0.71 | 0.76 | 0.39 | 0.43 | 0.47 | 0.45 | 0.88 | 0.74 | 2.06 | ----- | z | |||||||||||
1967 | 0.24 | 0.40 | 0.61 | 0.77 | 0.35 | 0.29 | 0.38 | 0.41 | 0.36 | 0.65 | 0.63 | 0.34 | 0.77 | |||||||||||||
1968 | 0.26 | 0.32 | 0.63 | 0.70 | 0.37 | 0.15 | 0.42 | 0.67 | 0.61 | 0.82 | 0.40 | 0.35 | 0.82 | |||||||||||||
1969 | 1.20 | 0.18 | 0.32 | 0.24 | 0.52 | 1.26 | 0.42 | 0.54 | 0.47 | 1.05 | 0.42 | 0.60 | 1.26 | |||||||||||||
1970 | 0.62 | 0.26 | 0.37 | 0.78 | 0.23 | 0.47 | 0.48 | 0.60 | 0.69 | 0.83 | 0.47 | 0.36 | 0.83 | |||||||||||||
1971 | 0.48 | 0.44 | 0.63 | 0.58 | 0.29 | 0.10 | 0.53 | 0.97 | 0.62 | 0.88 | 0.26 | 0.48 | 0.97 | |||||||||||||
1972 | 0.48 | 0.21 | 0.57 | ----- | z | 0.37 | 0.43 | 0.09 | 0.36 | 0.78 | 0.79 | 0.27 | 1.03 | ----- | z | |||||||||||
1973 | 0.28 | 0.22 | 0.34 | 1.14 | 0.71 | 1.03 | 0.63 | 0.27 | 0.33 | 0.33 | 0.59 | 0.59 | 1.14 | |||||||||||||
1974 | 0.58 | 0.52 | 0.84 | 0.32 | 0.10 | 0.54 | 0.80 | 0.37 | 0.44 | 0.45 | 0.46 | 0.42 | 0.84 | |||||||||||||
1975 | 0.90 | 0.66 | 0.96 | 0.37 | 0.46 | 0.72 | 0.50 | 0.27 | 0.47 | 0.60 | 0.50 | 0.31 | 0.96 | |||||||||||||
1976 | 0.35 | 0.66 | a | 0.67 | 0.35 | 0.15 | 0.37 | 0.61 | 0.52 | 0.53 | 0.19 | 0.28 | 0.14 | 0.67 | a | |||||||||||
1977 | 0.41 | 0.80 | 0.32 | 0.26 | 0.30 | 0.18 | 0.86 | 0.43 | 0.89 | b | 0.71 | 0.67 | 0.77 | 0.89 | b | |||||||||||
1978 | 1.16 | 0.46 | d | ----- | z | ----- | z | ----- | z | 0.07 | 0.50 | 0.59 | 0.64 | 1.02 | 0.65 | 0.92 | ----- | z | ||||||||
1979 | 0.49 | 0.70 | b | 0.45 | i | 0.56 | 0.98 | 1.07 | 0.34 | ----- | z | 0.13 | 0.81 | 0.72 | a | ----- | z | ----- | z | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.49 | 0.47 | 0.54 | 0.55 | 0.52 | 0.46 | 0.48 | 0.50 | 0.52 | 0.58 | 0.48 | 0.51 | 1.00 | |||||||||||||
S.D. | 0.29 | 0.27 | 0.29 | 0.30 | 0.29 | 0.38 | 0.31 | 0.23 | 0.28 | 0.29 | 0.23 | 0.36 | 0.35 | |||||||||||||
SKEW | 1.43 | 1.78 | 1.85 | 0.64 | 0.91 | 1.37 | 2.60 | 1.16 | 0.75 | 0.10 | 2.15 | 2.23 | 1.06 | |||||||||||||
MAX | 1.50 | 1.60 | 1.73 | 1.22 | 1.36 | 1.81 | 2.00 | 1.29 | 1.38 | 1.13 | 1.60 | 2.06 | 2.00 | |||||||||||||
MIN | 0.14 | 0.14 | 0.15 | 0.11 | 0.10 | 0.00 | 0.09 | 0.18 | 0.06 | 0.00 | 0.05 | 0.14 | 0.56 | |||||||||||||
YRS | 50 | 49 | 49 | 45 | 47 | 51 | 49 | 50 | 52 | 50 | 52 | 50 | 33 |