YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | ----- | z | 0.00 | 0.26 | 0.09 | 0.05 | 0.00 | 0.46 | 1.32 | 0.98 | 1.15 | 0.95 | 0.11 | 5.37 | a | |||||||||||
1940 | 0.68 | 0.41 | 0.06 | 0.00 | 0.98 | 0.66 | 0.50 | 0.26 | 0.15 | 0.54 | 0.66 | 0.28 | 5.18 | |||||||||||||
1941 | 0.43 | 0.45 | 1.63 | 0.74 | a | 1.65 | 0.26 | 1.14 | a | 2.40 | a | 3.88 | 1.40 | 0.43 | 0.56 | 14.97 | ||||||||||
1942 | 0.07 | 0.44 | 0.00 | 0.62 | 0.00 | 0.08 | 0.97 | 4.29 | 0.58 | 1.41 | 0.00 | 1.23 | a | 9.69 | ||||||||||||
1943 | 0.02 | 0.00 | 0.00 | 0.00 | 0.04 | 1.64 | 1.19 | 0.15 | 1.73 | 0.00 | 0.91 | 0.55 | 6.23 | |||||||||||||
1944 | 0.37 | 0.35 | 0.10 | 0.00 | 0.59 | 0.54 | 1.47 | 1.33 | 1.32 | 1.10 | 0.61 | 0.55 | 8.33 | |||||||||||||
1945 | 0.12 | 0.01 | 0.56 | 0.28 | 0.00 | 0.04 | 0.40 | 0.27 | 0.00 | 3.63 | 0.00 | 0.00 | 5.31 | |||||||||||||
1946 | 0.52 | 0.00 | 0.03 | 0.37 | 0.56 | 0.17 | 0.42 | 0.39 | 1.19 | ----- | z | 0.11 | 1.13 | 4.89 | a | |||||||||||
1947 | 0.77 | 0.00 | 0.26 | 0.01 | 0.52 | 0.67 | 0.09 | 1.67 | 0.00 | 0.35 | 0.38 | 0.50 | 5.22 | |||||||||||||
1948 | 0.20 | 0.62 | 0.00 | 0.00 | 0.03 | 0.72 | 1.16 | 0.70 | 0.00 | 0.49 | 0.00 | 0.62 | 4.54 | |||||||||||||
1949 | 2.17 | 0.15 | 0.00 | 0.12 | 0.84 | 0.50 | 1.05 | 0.36 | 1.10 | 1.36 | 0.00 | 0.66 | 8.31 | |||||||||||||
1950 | 0.91 | 0.31 | 0.00 | 0.00 | 0.00 | 0.00 | 2.68 | 0.00 | 1.93 | 0.42 | 0.00 | 0.00 | 6.25 | |||||||||||||
1951 | 0.28 | 0.81 | 0.42 | 0.00 | 0.00 | 0.06 | 0.96 | 1.80 | 0.00 | 0.50 | 0.00 | 0.75 | 5.58 | |||||||||||||
1952 | 0.00 | 0.32 | 0.49 | 1.14 | 0.51 | 0.84 | 1.65 | 1.32 | 0.00 | 0.00 | 0.00 | 0.40 | 6.67 | |||||||||||||
1953 | 0.00 | 0.10 | 0.42 | 0.71 | 0.28 | 0.33 | 1.36 | 0.21 | 0.00 | 0.52 | 0.00 | 0.10 | 4.03 | |||||||||||||
1954 | 0.05 | 0.00 | 0.06 | 0.00 | 0.50 | 0.21 | 0.75 | 3.73 | 0.46 | a | 0.34 | 0.00 | 0.00 | 6.10 | ||||||||||||
1955 | 0.43 | 0.03 | 0.12 | 0.00 | 0.09 | 0.11 | 2.33 | 1.98 | 0.12 | 0.83 | 0.00 | 0.15 | 6.19 | |||||||||||||
1956 | 0.36 | 0.54 | 0.00 | 0.02 | 0.00 | 1.09 | 0.51 | 0.72 | 0.13 | 0.00 | 0.00 | 0.20 | 3.57 | |||||||||||||
1957 | 0.15 | 0.55 | 0.07 | 0.06 | 0.07 | 0.02 | 1.22 | 1.86 | 0.40 | 1.96 | 0.74 | 0.00 | 7.10 | |||||||||||||
1958 | 0.93 | 1.11 | 2.08 | 0.15 | 0.59 | 1.42 | 0.87 | 1.41 | 5.14 | 1.75 | 0.17 | 0.00 | 15.62 | |||||||||||||
1959 | 0.08 | 0.00 | 0.06 | 0.01 | 0.06 | 0.43 | 0.49 | 1.54 | 0.04 | 0.62 | 0.14 | 0.37 | 3.84 | |||||||||||||
1960 | 0.75 | 0.41 | 0.08 | 0.00 | 0.00 | 0.55 | 2.95 | 0.71 | 0.22 | 0.90 | 0.04 | 1.42 | 8.03 | |||||||||||||
1961 | 0.67 | 0.00 | 0.22 | 0.00 | 0.00 | 0.03 | 0.48 | 2.04 | 0.95 | 0.08 | 0.86 | 0.41 | 5.74 | |||||||||||||
1962 | 0.80 | 0.57 | 0.08 | 0.04 | 0.00 | 0.00 | 2.41 | 0.06 | 4.25 | 0.83 | 0.32 | 0.07 | 9.43 | |||||||||||||
1963 | 0.19 | 0.48 | 0.00 | 0.00 | 0.00 | 0.06 | 0.43 | 1.17 | 1.45 | 0.71 | 0.61 | 0.07 | 5.17 | |||||||||||||
1964 | 0.03 | 0.00 | 0.76 | 0.06 | 0.01 | 0.00 | 0.76 | 1.82 | 0.31 | 0.36 | 0.00 | 0.44 | 4.55 | |||||||||||||
1965 | 0.07 | 0.57 | 0.05 | 0.00 | 0.03 | 0.61 | 0.16 | 1.89 | 2.69 | 0.22 | 0.00 | 0.81 | 7.10 | |||||||||||||
1966 | 0.24 | 0.22 | 0.10 | 1.56 | 0.52 | 3.88 | 0.74 | 2.63 | 1.48 | 0.02 | 0.06 | 0.09 | 11.54 | |||||||||||||
1967 | 0.00 | 0.06 | 0.06 | 0.02 | 0.22 | 1.30 | 1.70 | 0.30 | 0.35 | 0.00 | 0.24 | 0.95 | 5.20 | |||||||||||||
1968 | 0.46 | 1.45 | 1.08 | 0.12 | 0.04 | 0.03 | 6.00 | 2.27 | 0.30 | 0.07 | 1.86 | 0.33 | 14.01 | |||||||||||||
1969 | 0.05 | 0.18 | 0.20 | 0.00 | 0.41 | 0.04 | 1.14 | 0.77 | 0.52 | 0.31 | 0.85 | 0.58 | 5.05 | |||||||||||||
1970 | 0.00 | 0.71 | 0.52 | 0.00 | 0.08 | 0.28 | 1.40 | 1.63 | 0.71 | 0.60 | 0.00 | 0.03 | 5.96 | |||||||||||||
1971 | 0.16 | 0.00 | 0.00 | 0.40 | 0.35 | 0.30 | 1.92 | 0.89 | 0.51 | 1.05 | 0.22 | ----- | z | 5.80 | a | |||||||||||
1972 | 0.22 | 0.04 | 0.00 | 0.00 | 0.03 | 2.51 | 1.00 | 3.61 | 3.44 | 1.54 | 0.67 | 0.19 | 13.25 | |||||||||||||
1973 | 1.10 | 2.29 | 0.23 | 0.00 | 0.56 | 0.16 | 2.09 | 0.08 | 0.00 | 0.04 | 0.02 | 0.00 | 6.57 | |||||||||||||
1974 | 0.24 | 0.00 | 0.00 | 0.00 | 0.31 | 0.10 | 2.13 | 0.86 | 9.52 | 2.26 | 0.50 | 0.88 | 16.80 | |||||||||||||
1975 | 0.58 | 1.03 | 0.21 | 0.00 | 0.02 | 0.00 | 1.29 | 0.48 | 2.11 | 0.09 | 0.00 | 0.84 | 6.65 | |||||||||||||
1976 | 0.37 | 0.53 | 0.00 | 0.31 | 0.80 | 0.93 | 1.92 | 0.33 | 2.07 | 1.25 | 0.68 | b | 0.64 | 9.83 | ||||||||||||
1977 | 0.66 | 0.00 | 0.45 | 0.24 | 0.02 | 0.36 | 1.52 | 1.73 | 1.28 | 2.58 | 0.03 | 0.19 | 9.06 | |||||||||||||
1978 | 0.36 | 0.48 | 0.06 | 0.00 | 0.78 | 0.80 | 0.35 | 1.48 | 3.10 | 2.01 | 1.04 | 0.25 | 10.71 | |||||||||||||
1979 | 0.80 | 0.69 | 0.00 | 0.21 | 0.59 | 0.25 | 1.37 | 3.42 | 0.60 | 0.00 | 0.00 | 0.24 | 8.17 | |||||||||||||
1980 | 0.27 | 0.92 | 0.12 | 0.54 | 0.07 | 0.00 | 0.76 | 1.76 | 2.77 | 0.76 | 0.37 | 0.05 | 8.39 | |||||||||||||
1981 | 1.25 | 0.31 | 0.34 | 0.83 | 0.76 | 0.15 | 1.26 | 2.95 | 0.72 | 1.21 | 0.15 | 0.04 | 9.97 | |||||||||||||
1982 | 0.49 | a | 0.37 | 0.00 | 0.11 | 0.46 | 0.12 | 0.86 | 0.40 | 1.04 | 2.26 | 0.36 | 2.80 | 9.27 | ||||||||||||
1983 | 1.16 | 0.59 | 0.31 | 1.60 | 0.39 | 0.46 | 0.21 | 1.09 | 0.81 | 2.18 | 0.51 | 0.06 | 9.37 | |||||||||||||
1984 | 0.34 | b | 0.00 | 0.53 | 0.00 | 0.10 | 2.24 | 0.50 | 3.76 | 0.93 | 2.36 | c | 0.54 | 1.27 | 12.57 | |||||||||||
1985 | 0.90 | 0.11 | 0.42 | 0.12 | 0.01 | 0.44 | 2.00 | 1.03 | 2.33 | 1.61 | 0.16 | 0.00 | 9.13 | |||||||||||||
1986 | 0.00 | 0.31 | 0.46 | c | 0.02 | 1.36 | 2.38 | 2.68 | 2.42 | 0.49 | 0.79 | 1.19 | 1.55 | l | 12.10 | a | ||||||||||
1987 | 0.00 | 0.13 | a | 0.29 | 0.38 | 0.05 | 2.76 | 0.61 | 1.65 | 1.40 | 0.22 | a | 0.79 | 0.99 | n | 8.28 | a | |||||||||
1988 | 0.13 | 0.54 | a | 0.05 | 0.19 | 0.00 | 0.34 | 2.35 | 3.28 | 1.27 | 0.28 | 0.19 | 0.01 | w | 8.62 | a | ||||||||||
1989 | 0.22 | 0.88 | 0.43 | a | 0.00 | 1.19 | 0.01 | 1.39 | 1.88 | 1.36 | 0.65 | 0.00 | 0.00 | q | 8.01 | a | ||||||||||
1990 | 0.45 | b | 0.12 | 0.62 | a | 0.80 | 0.39 | 0.00 | 2.18 | 2.15 | 4.61 | 0.58 | 1.56 | d | 0.23 | m | 13.46 | a | ||||||||
1991 | 1.16 | n | 0.61 | 0.08 | 0.09 | 0.24 | 0.30 | 1.87 | 3.85 | 2.03 | 0.19 | 0.76 | 3.38 | 13.40 | a | |||||||||||
1992 | 1.74 | t | 0.29 | 0.78 | 0.46 | 2.46 | 0.03 | 0.00 | 1.83 | 1.05 | 0.63 | 0.40 | ----- | z | 7.93 | b | ||||||||||
1993 | 1.44 | 0.27 | 0.00 | 0.12 | 0.03 | 0.89 | a | 1.18 | 1.94 | 0.46 | ----- | z | 0.52 | 0.76 | 7.61 | a | ||||||||||
1994 | 0.03 | 0.62 | ----- | z | 0.06 | ----- | z | ----- | z | 1.11 | ----- | z | 0.64 | 0.71 | 0.54 | y | 1.55 | y | 3.17 | f | ||||||
1995 | ----- | z | 0.95 | t | ----- | z | 0.05 | 0.16 | 0.72 | 0.66 | 0.72 | 3.00 | u | ----- | z | 0.41 | 0.00 | 2.72 | e | |||||||
1996 | 0.29 | 0.23 | 0.00 | ----- | z | 0.00 | 1.25 | x | 1.78 | 2.74 | 3.07 | 0.00 | 0.29 | 0.00 | 8.40 | b | ||||||||||
1997 | 0.80 | c | 0.59 | 0.57 | ----- | z | ----- | z | ----- | z | 0.73 | 2.92 | y | ----- | z | ----- | z | 0.95 | 0.49 | x | 3.64 | g | ||||
1998 | 1.03 | c | 0.14 | 0.25 | 0.00 | 0.05 | 0.36 | 1.65 | 1.47 | 0.59 | 2.01 | 0.30 | 0.17 | q | 7.85 | a | ||||||||||
1999 | 0.08 | 0.00 | 0.06 | 0.00 | 0.11 | 1.12 | 1.58 | 0.60 | 0.96 | 0.57 | 0.00 | ----- | z | 5.08 | a | |||||||||||
2000 | 0.00 | 0.01 | 0.10 | 0.20 | b | 0.00 | 2.81 | 1.12 | 0.25 | 0.00 | 0.82 | b | 1.06 | 0.00 | 6.37 | |||||||||||
2001 | 0.08 | 0.17 | 0.39 | 0.00 | 0.04 | 0.25 | 0.38 | a | 0.93 | 0.76 | c | 0.00 | 0.58 | e | 0.06 | 3.64 | ||||||||||
2002 | 0.13 | n | 1.34 | b | 0.00 | c | 0.04 | b | 0.00 | 0.20 | 3.15 | a | 1.03 | a | 0.09 | b | 1.42 | f | 0.00 | n | 1.46 | q | 5.85 | d | ||
2003 | 0.31 | k | 2.69 | i | 0.22 | h | 0.00 | d | 0.00 | b | 0.68 | 0.26 | 0.26 | c | 0.15 | c | 0.39 | h | 0.60 | l | 0.00 | w | 1.35 | f | ||
2004 | 0.42 | h | 0.01 | h | 0.94 | f | 1.27 | b | 0.41 | ----- | z | 2.58 | 1.99 | 1.68 | y | 0.47 | 3.05 | 0.20 | r | 9.77 | f | |||||
2005 | 0.30 | l | ----- | z | 0.02 | h | 0.17 | g | 1.05 | f | 0.00 | e | 0.46 | e | 1.48 | q | ----- | z | ----- | z | 0.00 | 0.00 | u | 0.46 | i | |
2006 | ----- | z | 0.10 | i | 0.00 | h | 0.02 | d | 0.17 | d | 0.22 | a | ----- | z | 3.82 | 4.30 | a | 0.98 | d | 0.00 | k | 0.00 | q | 9.51 | f | |
2007 | 1.91 | k | 0.08 | 0.00 | c | 0.25 | 1.57 | c | 0.82 | 2.02 | 0.82 | 2.00 | 0.09 | d | 1.25 | d | 0.42 | o | 8.90 | b | ||||||
2008 | 0.03 | k | 0.00 | i | 0.00 | 0.00 | 0.05 | c | 0.02 | 8.64 | a | 2.62 | 1.91 | 0.52 | d | 0.19 | n | 0.25 | s | 13.76 | d | |||||
2009 | 0.02 | l | 0.01 | i | 0.11 | 0.00 | ----- | z | 2.51 | 0.99 | c | 0.49 | h | 2.59 | d | ----- | z | ----- | z | ----- | z | 6.20 | g | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.43 | 0.38 | 0.26 | 0.21 | 0.33 | 0.62 | 1.41 | 1.54 | 1.39 | 0.84 | 0.44 | 0.48 | 7.92 | |||||||||||||
S.D. | 0.44 | 0.42 | 0.37 | 0.37 | 0.47 | 0.83 | 1.29 | 1.10 | 1.61 | 0.79 | 0.54 | 0.65 | 3.29 | |||||||||||||
SKEW | 1.51 | 1.93 | 2.78 | 2.29 | 2.21 | 1.98 | 3.24 | 0.67 | 2.41 | 1.20 | 2.21 | 2.65 | 0.97 | |||||||||||||
MAX | 2.17 | 2.29 | 2.08 | 1.60 | 2.46 | 3.88 | 8.64 | 4.29 | 9.52 | 3.63 | 3.05 | 3.38 | 16.80 | |||||||||||||
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 | 3.57 | |||||||||||||
YRS | 59 | 64 | 65 | 68 | 67 | 67 | 70 | 67 | 67 | 63 | 65 | 52 | 46 |