YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1905 | ----- | z | 0.40 | 0.50 | 0.30 | 0.70 | 0.10 | 0.30 | 0.80 | 1.20 | 0.20 | 0.30 | 0.20 | a | ----- | z | ||||||||||
1906 | 0.30 | 0.20 | 1.20 | a | 1.40 | b | 0.75 | 0.09 | 0.70 | 0.30 | 0.70 | a | 0.40 | 1.70 | a | 0.27 | 1.70 | e | ||||||||
1907 | 0.40 | a | 0.50 | 0.25 | b | 0.25 | 0.50 | c | 0.50 | 0.27 | 0.60 | 0.15 | 0.23 | 0.60 | 0.30 | 0.60 | f | |||||||||
1908 | 0.40 | 0.60 | 0.25 | 0.20 | 0.60 | 0.60 | 0.05 | 0.50 | 0.70 | 0.60 | 1.20 | 0.80 | 1.20 | |||||||||||||
1909 | 0.75 | 0.60 | 0.20 | 0.20 | 0.25 | ----- | z | 0.70 | 1.37 | 0.73 | 0.00 | 0.07 | c | ----- | z | ----- | z | |||||||||
1910 | 0.60 | 0.60 | a | 0.30 | 0.05 | 0.10 | a | 0.40 | 0.50 | y | 0.25 | u | 0.35 | 0.80 | a | 0.60 | y | 0.60 | a | ----- | z | |||||
1911 | 1.00 | a | 0.60 | t | 0.30 | 0.25 | 0.60 | 0.75 | 0.50 | 0.19 | 2.00 | 0.50 | ----- | z | ----- | z | ----- | z | ||||||||
1912 | ----- | z | ----- | z | 0.80 | p | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.19 | v | ----- | z |
1915 | 0.62 | w | 0.65 | 0.71 | b | 0.33 | 1.02 | 1.16 | 0.22 | 0.40 | 0.79 | ----- | z | 0.93 | 0.45 | a | ----- | z | ||||||||
1916 | 0.80 | k | 0.25 | a | 0.75 | 0.20 | 0.00 | 0.00 | 0.70 | 1.00 | 0.52 | 1.35 | 0.10 | 1.35 | a | 1.35 | m | |||||||||
1917 | 0.30 | 0.80 | 0.19 | 0.60 | ----- | z | ----- | z | 1.98 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||||
1918 | 0.05 | x | 0.40 | w | 0.68 | a | 0.09 | 0.25 | 0.50 | 1.17 | 0.13 | 0.17 | 0.22 | 0.25 | t | 0.27 | ----- | z | ||||||||
1919 | ----- | z | 0.30 | x | 0.07 | 0.14 | b | 0.18 | 0.17 | 0.76 | u | 0.19 | 0.42 | 0.07 | ----- | z | ----- | z | ----- | z | ||||||
1920 | ----- | z | 0.40 | 0.34 | d | 0.25 | 0.37 | 0.21 | 0.09 | 0.91 | s | 0.13 | 0.85 | 0.06 | 0.29 | x | ----- | z | ||||||||
1921 | 0.95 | 0.15 | 0.14 | 0.87 | 0.29 | 0.65 | 1.20 | 0.75 | 0.34 | 1.07 | 0.20 | 0.35 | 1.20 | |||||||||||||
1922 | 0.21 | 0.56 | 0.31 | 0.18 | 0.35 | 0.06 | 0.15 | 1.13 | 0.24 | 0.26 | 1.70 | a | 0.40 | s | 1.70 | t | ||||||||||
1923 | 0.39 | b | 0.30 | 0.15 | a | 0.70 | 0.33 | ----- | z | 1.03 | 0.42 | 0.51 | 0.70 | a | 0.20 | a | 0.30 | ----- | z | |||||||
1924 | 0.18 | 0.08 | 0.22 | 0.00 | 0.44 | 0.00 | 1.02 | 0.65 | 0.85 | 1.77 | 0.37 | 0.38 | 1.77 | |||||||||||||
1925 | 0.11 | 0.20 | 0.12 | 0.40 | ----- | z | ----- | z | 0.95 | r | 1.63 | 0.60 | 2.50 | 0.39 | ----- | z | ----- | z | ||||||||
1926 | 0.03 | 0.22 | 0.12 | 0.78 | 0.31 | 0.00 | y | 0.18 | 0.25 | 0.40 | 0.24 | 0.26 | 0.35 | a | ----- | z | ||||||||||
1927 | 0.19 | a | 0.37 | 0.84 | 0.24 | 0.10 | 0.52 | 0.16 | 0.49 | 1.77 | 1.08 | 0.37 | 0.15 | 1.77 | a | |||||||||||
1928 | ----- | z | 0.54 | y | 0.38 | ----- | z | 0.50 | 0.22 | 0.24 | 1.01 | 0.61 | 2.18 | 0.39 | 0.34 | ----- | z | |||||||||
1929 | 0.25 | 0.27 | 0.32 | 0.35 | 0.40 | ----- | z | 0.94 | 0.49 | 1.58 | ----- | z | 0.02 | 0.05 | ----- | z | ||||||||||
1930 | 0.47 | u | 0.30 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | 0.70 | 0.05 | 0.07 | 0.53 | 1.10 | 0.27 | 0.60 | 0.01 | ----- | z | ||||||||
1959 | 0.35 | 0.80 | 0.45 | 0.81 | 0.54 | 0.30 | 0.23 | 0.58 | 1.07 | 0.25 | 0.38 | 0.45 | 1.07 | |||||||||||||
1960 | 0.60 | 0.50 | d | 0.30 | 0.30 | 0.50 | 0.11 | 0.20 | 0.70 | 0.32 | 1.00 | 0.76 | 0.20 | 1.00 | d | |||||||||||
1961 | 0.00 | 0.10 | 0.45 | 0.35 | 0.35 | ----- | z | 0.29 | 0.83 | 1.12 | 0.34 | 0.60 | 0.35 | ----- | z | |||||||||||
1962 | 0.30 | 0.80 | ----- | z | 0.00 | 0.07 | 0.19 | 0.60 | 0.63 | 0.93 | 1.32 | 0.35 | 0.10 | ----- | z | |||||||||||
1963 | 0.08 | 0.12 | 0.28 | 0.65 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | 0.45 | 0.30 | 0.40 | 1.05 | 0.60 | 0.40 | 0.20 | 0.70 | ----- | z | ||||||||
1967 | 0.57 | 0.00 | 0.04 | 0.20 | 0.75 | 0.47 | 0.63 | 0.25 | 0.40 | 0.00 | 0.10 | 0.40 | 0.75 | |||||||||||||
1968 | 0.10 | 0.10 | 0.85 | 1.01 | 1.10 | 1.43 | 0.38 | 1.20 | 0.46 | 0.62 | 0.50 | 0.24 | 1.43 | |||||||||||||
1969 | 1.46 | 1.63 | 0.60 | 1.09 | 0.70 | 0.85 | 0.46 | 0.85 | 0.66 | 0.38 | 0.35 | 0.00 | 1.63 | |||||||||||||
1970 | 0.50 | 0.08 | 0.71 | 0.30 | 0.00 | 1.60 | 0.40 | 0.45 | 0.56 | 0.46 | 0.50 | 0.19 | 1.60 | |||||||||||||
1971 | 0.20 | 0.47 | 0.32 | 0.42 | 0.48 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.10 | 0.41 | ----- | z | |||||||
1972 | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | b | 0.25 | 0.10 | 0.56 | 0.98 | 1.25 | 0.46 | 0.59 | ----- | z | |||||||
1973 | 0.35 | 0.21 | 0.43 | 0.40 | ----- | z | 0.66 | 0.89 | 0.49 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||||||
1974 | ----- | z | ----- | z | 0.00 | n | 0.23 | 0.00 | 0.04 | 0.48 | 0.20 | 0.21 | 2.23 | a | 0.22 | 0.37 | ----- | z | ||||||||
1975 | 0.24 | 0.19 | 0.49 | 0.23 | 0.58 | 0.74 | 0.76 | 0.04 | 0.12 | 0.17 | 0.43 | 0.43 | 0.76 | |||||||||||||
1976 | 0.07 | 0.47 | 0.41 | 0.67 | 0.47 | 0.05 | 0.36 | 0.30 | 0.62 | 0.00 | 0.00 | 0.00 | 0.67 | |||||||||||||
1977 | 0.36 | 0.05 | 0.05 | 0.03 | 0.77 | a | 0.25 | 0.54 | 0.64 | 0.30 | 1.02 | 0.65 | 0.21 | 1.02 | a | |||||||||||
1978 | 0.72 | 0.40 | 0.66 | 0.77 | 0.42 | a | 0.09 | 0.47 | 0.84 | 0.30 | 0.84 | a | 1.52 | a | 0.84 | 1.52 | c | |||||||||
1979 | 0.24 | ----- | z | 0.67 | 0.24 | a | 0.40 | 0.00 | 0.00 | 0.57 | 0.03 | 0.37 | 0.07 | 0.53 | ----- | z | ||||||||||
1980 | 0.60 | a | 1.13 | a | 0.34 | 0.25 | 0.30 | 0.00 | 0.89 | 0.27 | 1.24 | 0.60 | 0.91 | 0.01 | 1.24 | b | ||||||||||
1981 | 0.07 | 0.58 | 0.29 | b | 0.73 | 0.95 | 0.22 | 0.44 | a | 0.59 | 1.88 | b | 1.12 | a | 0.24 | 0.42 | 1.88 | f | ||||||||
1982 | 0.40 | d | 0.07 | 0.74 | 0.02 | 0.60 | 0.40 | a | 1.03 | 1.19 | a | 1.16 | b | 0.65 | 0.87 | 0.27 | 1.19 | h | ||||||||
1983 | 0.33 | 0.40 | 0.22 | 0.77 | 0.70 | 0.21 | 1.02 | 1.54 | 1.39 | 0.68 | 0.73 | c | 0.93 | a | 1.54 | d | ||||||||||
1984 | 0.40 | 0.25 | 0.22 | a | 0.42 | a | 0.16 | 1.17 | c | 0.50 | 0.50 | a | 0.33 | d | 0.68 | 0.50 | c | 0.45 | 1.17 | m | ||||||
1985 | 0.55 | 0.07 | 0.52 | 1.08 | a | 0.70 | 0.61 | b | 0.71 | 0.00 | 1.99 | c | 0.32 | 0.45 | b | 0.26 | b | 1.99 | j | |||||||
1986 | 0.14 | 0.43 | a | 0.24 | b | 0.96 | a | 0.60 | 0.24 | 0.40 | 0.42 | 0.92 | 0.44 | b | 0.39 | 0.20 | 0.96 | f | ||||||||
1987 | 0.23 | 0.78 | a | 0.67 | a | 0.25 | a | 0.70 | b | 0.12 | 0.53 | c | 1.01 | a | 0.14 | 1.28 | 1.11 | a | 0.72 | a | 1.28 | k | ||||
1988 | 0.35 | 0.03 | 0.37 | 1.10 | 0.49 | 0.57 | 0.10 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.38 | 0.40 | 0.41 | 0.45 | 0.46 | 0.40 | 0.53 | 0.63 | 0.73 | 0.72 | 0.51 | 0.38 | 1.26 | |||||||||||||
S.D. | 0.29 | 0.32 | 0.25 | 0.35 | 0.27 | 0.39 | 0.39 | 0.39 | 0.52 | 0.60 | 0.43 | 0.28 | 0.36 | |||||||||||||
SKEW | 1.57 | 1.53 | 0.88 | 0.85 | 0.14 | 1.36 | 1.24 | 0.69 | 0.93 | 1.26 | 1.34 | 1.28 | -0.15 | |||||||||||||
MAX | 1.46 | 1.63 | 1.20 | 1.40 | 1.10 | 1.60 | 1.98 | 1.63 | 2.00 | 2.50 | 1.70 | 1.35 | 1.77 | |||||||||||||
MIN | 0.00 | 0.00 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 0.00 | 0.00 | 0.00 | 0.67 | |||||||||||||
YRS | 40 | 43 | 46 | 47 | 47 | 42 | 46 | 45 | 46 | 44 | 43 | 41 | 16 |