YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.99 | ----- | z | |
1941 | 0.67 | w | 0.96 | 0.61 | 0.31 | ----- | z | ----- | z | ----- | z | 0.15 | ----- | z | 0.22 | 0.19 | 1.76 | ----- | z | |||||||
1942 | 0.00 | 0.19 | 0.45 | 0.17 | ----- | z | ----- | z | ----- | z | 0.37 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||||
1943 | 1.53 | 0.32 | ----- | z | ----- | z | 0.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.18 | ----- | z | ||||
1944 | 0.11 | ----- | 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | ----- | z | ||||||
1949 | 0.02 | 0.20 | b | 0.08 | 0.00 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 0.72 | 0.72 | b | |||||||||||
1950 | 0.07 | 0.23 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.54 | 0.00 | 0.05 | 0.01 | 0.54 | |||||||||||||
1951 | 0.24 | 0.00 | 0.05 | 0.03 | 0.37 | 0.00 | 0.04 | 0.00 | 0.00 | 0.04 | 0.04 | 0.53 | 0.53 | |||||||||||||
1952 | 0.94 | a | ----- | z | 1.05 | 0.04 | 0.05 | 0.00 | 0.00 | 0.00 | 0.12 | 0.00 | 0.66 | 0.28 | ----- | z | ||||||||||
1953 | 0.02 | 0.00 | 0.19 | 0.07 | 0.00 | d | 0.00 | 0.00 | 0.12 | 0.00 | 0.00 | 0.09 | 0.00 | a | 0.19 | e | ||||||||||
1954 | 0.70 | 1.08 | 0.18 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.03 | 0.00 | 0.62 | 0.28 | 1.08 | |||||||||||||
1955 | 0.28 | 0.02 | 0.00 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.11 | 0.38 | a | 0.38 | a | |||||||||||
1956 | 0.79 | 0.00 | 0.00 | 0.57 | 0.19 | 0.00 | 0.02 | 0.00 | 0.00 | 0.28 | 0.00 | 0.00 | 0.79 | |||||||||||||
1957 | 0.64 | 0.60 | 0.09 | 0.01 | 0.09 | 0.00 | 0.08 | 0.00 | 0.00 | 0.01 | 0.34 | 0.36 | 0.64 | |||||||||||||
1958 | 0.63 | 0.70 | 0.18 | 0.34 | 0.00 | 0.00 | 0.00 | 0.00 | 0.13 | 0.48 | 0.00 | 0.00 | 0.70 | |||||||||||||
1959 | 0.52 | 0.79 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.60 | 0.02 | 0.08 | 0.41 | 0.79 | |||||||||||||
1960 | 0.17 | 0.90 | 0.00 | 0.09 | 0.04 | 0.00 | 0.07 | 0.00 | 0.13 | 0.00 | 0.57 | 0.01 | 0.90 | |||||||||||||
1961 | 0.36 | 0.02 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.23 | 0.00 | 0.11 | 0.95 | 0.61 | 0.95 | |||||||||||||
1962 | 0.51 | 0.74 | 0.12 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.74 | |||||||||||||
1963 | 0.09 | 0.64 | 0.52 | 0.04 | 0.00 | 0.03 | 0.00 | 0.22 | 0.30 | 0.58 | 0.25 | 0.01 | 0.64 | |||||||||||||
1964 | 0.26 | 0.00 | 0.07 | 0.00 | 0.00 | ----- | z | 0.00 | 0.00 | 0.00 | 0.06 | 0.14 | 0.14 | ----- | z | |||||||||||
1965 | 0.05 | 0.11 | 0.42 | 1.11 | 0.00 | ----- | z | 0.19 | 0.65 | 0.00 | 0.00 | 0.91 | 1.20 | ----- | z | |||||||||||
1966 | 0.11 | 0.02 | 0.00 | 0.00 | ----- | z | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.31 | 0.76 | ----- | z | |||||||||||
1967 | 0.31 | 0.00 | 0.00 | 0.17 | 0.00 | 0.04 | 0.49 | 0.19 | 0.26 | 0.00 | 0.91 | 0.04 | 0.91 | |||||||||||||
1968 | 0.00 | 1.35 | 0.29 | 0.02 | 0.00 | ----- | z | 0.84 | 0.01 | 0.00 | 0.12 | 0.00 | 0.10 | ----- | z | |||||||||||
1969 | 0.53 | 0.99 | 0.21 | 0.00 | 0.06 | 0.11 | 0.95 | 0.00 | 0.03 | 0.00 | 0.31 | 0.00 | 0.99 | |||||||||||||
1970 | 0.07 | 0.77 | 0.57 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.93 | 0.30 | 0.93 | |||||||||||||
1971 | 0.02 | 0.00 | 0.00 | 0.00 | 0.26 | 0.00 | 0.08 | 0.00 | 0.00 | 0.04 | 0.00 | 0.36 | 0.36 | |||||||||||||
1972 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 0.05 | 0.80 | 0.09 | 0.80 | |||||||||||||
1973 | 0.00 | 0.78 | 0.18 | 0.00 | 0.44 | ----- | z | ----- | z | 0.13 | 0.00 | 0.00 | 0.12 | ----- | z | ----- | z | |||||||||
1974 | 1.17 | 0.00 | 0.55 | 0.14 | 0.04 | 0.00 | 0.36 | 0.26 | 0.11 | 0.70 | 0.19 | 0.55 | 1.17 | |||||||||||||
1975 | 0.00 | 0.00 | 0.01 | c | 0.26 | 0.00 | 0.00 | 0.00 | 0.00 | 0.60 | 0.00 | 0.00 | 0.00 | 0.60 | c | |||||||||||
1976 | 0.00 | 2.13 | 0.10 | 0.16 | 0.00 | 0.00 | 0.12 | 0.00 | 1.25 | 0.00 | 0.00 | 0.00 | 2.13 | |||||||||||||
1977 | 0.78 | 0.00 | 0.85 | 0.00 | 0.65 | 0.00 | 0.00 | 2.20 | 0.00 | 0.00 | 0.00 | 1.24 | 2.20 | |||||||||||||
1978 | 0.88 | 1.35 | 1.40 | ----- | z | 0.00 | 0.00 | 0.00 | 0.00 | 0.49 | 0.28 | 0.12 | 0.26 | ----- | z | |||||||||||
1979 | 0.88 | b | 0.11 | 0.55 | 0.00 | 0.00 | 0.00 | 0.08 | 0.04 | ----- | z | 0.00 | 0.00 | 0.00 | ----- | z | ||||||||||
1980 | 0.50 | y | 2.05 | v | ----- | z | 0.56 | 0.02 | 0.00 | ----- | z | ----- | z | 0.00 | 0.00 | 0.00 | 0.00 | ----- | z | |||||||
1981 | 0.25 | ----- | z | 0.54 | 0.00 | 0.12 | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 0.55 | 0.00 | ----- | z | |||||||||||
1982 | 0.16 | f | 0.57 | 0.60 | 0.25 | 0.05 | 0.20 | 0.00 | a | 0.02 | 0.29 | a | 0.01 | 0.00 | c | 0.28 | b | 0.60 | m | |||||||
1983 | 0.80 | 1.27 | 2.01 | 0.04 | 0.00 | 0.00 | 0.00 | 1.75 | 0.11 | a | 0.10 | 0.05 | 1.50 | 2.01 | a | |||||||||||
1984 | 0.00 | a | 0.00 | 0.03 | 0.00 | 0.00 | 0.00 | a | 0.92 | 2.39 | 0.00 | a | 0.00 | 1.04 | 0.48 | a | 2.39 | d | ||||||||
1985 | 0.18 | ----- | z | 0.00 | 0.00 | 0.00 | 0.05 | 0.00 | 0.00 | 0.01 | 0.00 | 0.27 | 0.41 | ----- | z | |||||||||||
1986 | 0.90 | 0.50 | v | 0.14 | 0.10 | 0.00 | 0.00 | a | 0.25 | 0.00 | 0.00 | 0.00 | 0.55 | 0.78 | 0.90 | w | ||||||||||
1987 | 0.35 | 0.05 | 0.42 | 0.00 | 0.06 | a | 0.12 | 0.00 | 0.00 | 0.10 | 0.22 | 0.74 | 0.73 | 0.74 | a | |||||||||||
1988 | 0.56 | 0.18 | 0.02 | 0.66 | 0.00 | 0.00 | b | ----- | z | 0.51 | ----- | z | 0.00 | 0.21 | 0.35 | ----- | z | |||||||||
1989 | 0.10 | 0.25 | 0.03 | 0.00 | 0.15 | 0.00 | 0.00 | 0.00 | 0.04 | 0.00 | 0.00 | 0.00 | 0.25 | |||||||||||||
1990 | 0.59 | 0.07 | 0.01 | 0.17 | 0.02 | 0.00 | 0.00 | 0.01 | 0.30 | 0.03 | a | 0.09 | 0.01 | 0.59 | a | |||||||||||
1991 | 0.25 | 1.99 | 0.50 | 0.00 | 0.12 | 0.00 | 0.02 | 0.00 | 0.10 | 0.00 | 0.02 | 0.47 | a | 1.99 | a | |||||||||||
1992 | 0.68 | 1.12 | 1.28 | 0.33 | 0.15 | 0.00 | 0.14 | 0.11 | 0.00 | 0.08 | 0.00 | a | 0.88 | 1.28 | a | |||||||||||
1993 | 1.02 | 1.62 | 0.15 | 0.00 | 0.02 | 0.03 | 0.00 | 0.00 | 0.00 | 0.08 | 0.07 | 0.01 | 1.62 | |||||||||||||
1994 | 0.01 | 0.25 | 0.12 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.08 | 0.05 | 0.12 | 0.25 | |||||||||||||
1995 | 1.00 | 0.12 | 0.51 | 0.00 | 0.00 | 0.02 | 0.00 | 0.11 | 0.00 | 0.00 | 0.00 | 1.01 | 1.01 | |||||||||||||
1996 | 0.17 | 0.41 | 0.06 | 0.01 | 0.00 | 0.00 | 0.08 | 0.04 | 0.00 | 0.22 | 0.30 | 0.55 | 0.55 | |||||||||||||
1997 | 0.12 | a | 0.00 | 0.00 | 0.00 | 0.00 | 0.04 | 0.05 | 0.12 | 1.04 | 0.00 | 0.33 | 0.48 | 1.04 | a | |||||||||||
1998 | 0.37 | 0.96 | 0.15 | 0.00 | 0.30 | 0.00 | 0.01 | 0.10 | 0.30 | 0.01 | 0.05 | e | 0.00 | 0.96 | e | |||||||||||
1999 | 0.24 | 0.02 | 0.09 | 0.66 | 0.00 | 0.00 | 0.50 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 0.66 | |||||||||||||
2000 | 0.03 | 0.58 | 0.58 | 0.09 | 0.00 | 0.00 | 0.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.58 | |||||||||||||
2001 | 1.02 | 1.35 | 0.23 | 0.02 | 0.02 | 0.00 | 0.23 | 0.00 | 0.00 | 0.26 | 0.32 | 0.00 | 1.35 | |||||||||||||
2002 | 0.00 | 0.00 | 0.00 | ----- | z | 0.00 | 0.00 | ----- | z | 0.00 | 0.00 | ----- | z | 0.57 | 0.84 | ----- | z | |||||||||
2003 | 0.00 | 1.34 | 0.10 | 0.07 | 0.02 | 0.20 | ----- | z | 0.07 | 0.34 | 0.00 | 0.33 | 0.54 | ----- | z | |||||||||||
2004 | 0.00 | ----- | z | ----- | z | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.39 | 0.00 | a | 0.50 | b | ----- | z | ||||||||
2005 | 0.42 | 0.55 | 0.58 | 0.08 | 0.05 | 0.00 | 0.29 | 0.31 | 0.50 | 0.46 | b | 0.00 | 0.05 | 0.58 | b | |||||||||||
2006 | 0.34 | ----- | z | 0.77 | 0.10 | 0.00 | 0.00 | 0.23 | 0.00 | 0.50 | 0.00 | 0.00 | 0.02 | ----- | z | |||||||||||
2007 | 0.04 | 0.03 | b | 0.07 | 0.00 | 0.00 | 0.00 | 0.00 | 0.35 | 0.00 | 0.00 | 0.00 | 0.18 | 0.35 | b | |||||||||||
2008 | 0.26 | b | 0.47 | 0.00 | 0.00 | 0.03 | 0.00 | 1.10 | 0.00 | 0.00 | 0.00 | 0.80 | 0.09 | b | 1.10 | d | ||||||||||
2009 | 0.17 | 0.15 | c | 0.00 | b | 0.00 | 0.00 | 0.10 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | d | 0.42 | b | 0.42 | k | ||||||||
2010 | 0.55 | c | 0.50 | a | 0.00 | 0.10 | 0.00 | 0.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.37 | 0.50 | 0.29 | 0.11 | 0.05 | 0.02 | 0.13 | 0.17 | 0.14 | 0.08 | 0.24 | 0.36 | 0.95 | |||||||||||||
S.D. | 0.37 | 0.55 | 0.39 | 0.21 | 0.12 | 0.04 | 0.26 | 0.46 | 0.26 | 0.15 | 0.31 | 0.42 | 0.55 | |||||||||||||
SKEW | 0.96 | 1.08 | 2.15 | 2.77 | 3.14 | 3.12 | 2.51 | 3.82 | 2.44 | 2.28 | 1.21 | 1.29 | 1.21 | |||||||||||||
MAX | 1.53 | 2.13 | 2.01 | 1.11 | 0.65 | 0.20 | 1.10 | 2.39 | 1.25 | 0.70 | 1.04 | 1.76 | 2.39 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | |||||||||||||
YRS | 63 | 58 | 62 | 62 | 62 | 58 | 57 | 63 | 60 | 62 | 63 | 64 | 40 |