YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1941 | 0.04 | 0.04 | a | 0.89 | 0.33 | 1.01 | 1.30 | f | 0.38 | 0.95 | 2.85 | 3.50 | 0.32 | 0.60 | 3.50 | |||||||||||
1942 | 0.10 | 0.30 | 0.20 | 1.00 | 0.10 | 0.91 | 0.40 | e | 1.09 | 2.96 | 1.62 | 0.00 | d | 1.53 | 2.96 | |||||||||||
1943 | 0.00 | 0.00 | 0.00 | 0.60 | 0.54 | 0.70 | 1.80 | 0.49 | 0.54 | 0.13 | 0.12 | 1.53 | 1.80 | |||||||||||||
1944 | 0.42 | 0.63 | 0.00 | 0.81 | 1.00 | 0.00 | k | 1.70 | 0.77 | 1.04 | x | 0.11 | 0.25 | 0.88 | 1.70 | |||||||||||
1945 | 0.31 | 0.07 | 0.33 | 0.57 | 0.20 | 0.13 | 0.47 | 3.05 | 0.83 | 0.63 | 0.00 | 0.00 | 3.05 | |||||||||||||
1946 | 0.91 | 0.07 | 0.17 | 0.27 | 0.28 | 0.66 | 0.39 | 0.82 | 1.49 | 2.85 | 0.20 | 0.33 | 2.85 | |||||||||||||
1947 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 0.00 | 0.46 | 0.43 | g | 0.46 | |||
1948 | 0.08 | 0.94 | 0.10 | 0.32 | 1.37 | 1.51 | 0.71 | 1.50 | 1.25 | 1.29 | 0.03 | 0.10 | 1.51 | |||||||||||||
1949 | 0.78 | 0.37 | 0.10 | 2.14 | 2.53 | 1.62 | 0.80 | 0.50 | 0.58 | 0.88 | 0.07 | 0.28 | 2.53 | |||||||||||||
1950 | 0.00 | 0.16 | 0.00 | 0.34 | 0.73 | 1.71 | 2.02 | 1.32 | 0.73 | 0.00 | 0.00 | 0.21 | 2.02 | |||||||||||||
1951 | 0.27 | 0.78 | 0.35 | 0.06 | 4.39 | 0.98 | 0.94 | 0.95 | 0.85 | 0.60 | 0.15 | 0.48 | 4.39 | |||||||||||||
1952 | 0.21 | 0.14 | 0.18 | 0.80 | 1.05 | 0.89 | 1.18 | 0.30 | 0.21 | 0.00 | 0.27 | 0.15 | 1.18 | |||||||||||||
1953 | 0.50 | 0.04 | 0.45 | 0.71 | 0.70 | 0.05 | 0.95 | 2.65 | 0.21 | 2.04 | 0.20 | 0.51 | 2.65 | |||||||||||||
1954 | 0.06 | 0.03 | 0.14 | 1.25 | 0.87 | 2.20 | 0.50 | 1.19 | 0.10 | 0.64 | 0.00 | 0.25 | 2.20 | |||||||||||||
1955 | 0.22 | 0.00 | 0.34 | 0.20 | 0.68 | 1.25 | 0.28 | 0.70 | 1.07 | 0.29 | 0.02 | 0.13 | 1.25 | |||||||||||||
1956 | 0.05 | 0.37 | 0.00 | 0.00 | 1.64 | 0.63 | 1.05 | 1.37 | 0.23 | 0.62 | 0.00 | 0.00 | 1.64 | |||||||||||||
1957 | 0.13 | 0.73 | 0.92 | 0.96 | 2.15 | 0.60 | 0.20 | 1.42 | 0.11 | 0.90 | 0.25 | 0.10 | 2.15 | |||||||||||||
1958 | 0.58 | 0.21 | 0.82 | 0.62 | 0.63 | 0.30 | 1.80 | 0.31 | 1.07 | 0.18 | 0.27 | 0.18 | 1.80 | |||||||||||||
1959 | 0.09 | 0.04 | 0.10 | 0.58 | 1.08 | 1.40 | 0.80 | 0.78 | 1.71 | 0.94 | 0.04 | 1.59 | 1.71 | |||||||||||||
1960 | 0.46 | 0.27 | 0.72 | 0.50 | 0.50 | 4.80 | 1.77 | 1.41 | 0.94 | 1.49 | 0.00 | 0.38 | 4.80 | |||||||||||||
1961 | 0.18 | 0.11 | 0.56 | 0.14 | 0.70 | 1.25 | 1.00 | 1.58 | 0.75 | 0.59 | 0.59 | 0.09 | 1.58 | |||||||||||||
1962 | 0.35 | 0.41 | 0.20 | 0.60 | 0.32 | 3.30 | 1.08 | 0.55 | 0.60 | 0.72 | 0.35 | 0.18 | 3.30 | |||||||||||||
1963 | 0.04 | 0.22 | 0.18 | 0.17 | 1.70 | a | 1.75 | 1.50 | 1.20 | 0.08 | 0.26 | 0.25 | 0.08 | 1.75 | ||||||||||||
1964 | 0.00 | 0.68 | 0.15 | 0.00 | 0.56 | 0.58 | 0.92 | 1.55 | 1.25 | 0.25 | 0.42 | 0.18 | 1.55 | |||||||||||||
1965 | 0.12 | 0.22 | 0.32 | 0.20 | 0.90 | 3.15 | 1.25 | 1.10 | 0.75 | 1.85 | 0.00 | 0.16 | 3.15 | |||||||||||||
1966 | 0.42 | 0.33 | 0.00 | 0.50 | 0.31 | 1.50 | 1.60 | 2.09 | 2.40 | 0.14 | 0.26 | 0.06 | 2.40 | |||||||||||||
1967 | 0.00 | 0.05 | 0.20 | 1.20 | 0.50 | 3.27 | 1.10 | 0.18 | 0.92 | 0.14 | 0.14 | 0.20 | 3.27 | |||||||||||||
1968 | 0.75 | 0.21 | 0.20 | 0.43 | 1.00 | 0.53 | 0.90 | 4.00 | 0.20 | 0.34 | 1.15 | 0.08 | 4.00 | |||||||||||||
1969 | 0.06 | 0.38 | 0.19 | 0.35 | 1.30 | 1.25 | 0.75 | 1.24 | 1.25 | 1.05 | 0.42 | 0.12 | 1.30 | |||||||||||||
1970 | 0.03 | 0.10 | 0.37 | 0.31 | 1.10 | 0.50 | 0.37 | 0.47 | 0.10 | 0.57 | 0.04 | 0.00 | 1.10 | |||||||||||||
1971 | 0.10 | 0.42 | 0.00 | 0.55 | 0.50 | 0.33 | 1.87 | 1.91 | 3.35 | 0.74 | 0.83 | 0.67 | 3.35 | |||||||||||||
1972 | 0.00 | 0.05 | 0.00 | 9999.00 | z | 1.10 | 1.57 | 1.63 | 0.35 | 0.32 | 0.76 | 0.38 | 0.14 | 1.63 | ||||||||||||
1973 | 0.39 | 0.47 | 1.37 | 0.67 | 0.73 | 0.42 | 1.38 | 0.79 | 0.59 | 0.98 | 0.00 | 0.33 | 1.38 | |||||||||||||
1974 | 0.20 | 0.38 | 2.38 | 0.03 | 1.75 | a | 0.86 | 0.08 | 1.26 | 1.08 | 1.33 | 0.14 | 0.39 | 2.38 | ||||||||||||
1975 | 0.18 | 0.41 | 0.11 | 1.10 | 0.34 | 1.34 | 1.23 | 0.52 | 0.66 | 0.00 | 0.45 | 0.01 | 1.34 | |||||||||||||
1976 | 0.00 | 0.00 | 0.31 | 0.54 | 0.37 | 0.81 | 0.33 | 1.83 | 1.02 | 0.54 | 0.31 | 0.00 | 1.83 | |||||||||||||
1977 | 0.14 | 0.12 | 0.27 | 0.82 | 0.52 | 1.27 | 1.03 | 3.80 | 9999.00 | z | 9999.00 | z | 0.21 | 0.03 | 3.80 | |||||||||||
1978 | 0.12 | 0.30 | 0.02 | 0.41 | 5.50 | 0.64 | 0.46 | 0.31 | 1.80 | 0.29 | 1.00 | 0.11 | 5.50 | |||||||||||||
1979 | 0.25 | 9999.00 | z | 0.60 | 0.50 | 1.30 | 0.98 | 0.73 | 1.08 | 0.80 | 0.78 | 0.16 | 0.06 | 1.30 | ||||||||||||
1980 | 0.29 | 0.22 | 1.23 | 1.37 | 1.80 | 1.22 | 0.09 | 1.55 | 1.01 | 1.66 | 0.25 | 0.23 | 1.80 | |||||||||||||
1981 | 0.07 | 0.06 | 0.52 | 0.22 | 0.59 | 1.07 | 2.00 | 5.65 | 1.24 | 0.80 | 0.28 | 0.00 | 5.65 | |||||||||||||
1982 | 0.10 | 0.25 | 0.11 | 0.17 | 0.43 | 0.87 | 2.25 | 0.75 | 0.83 | 0.57 | 0.20 | 0.70 | 2.25 | |||||||||||||
1983 | 1.25 | 0.90 | 0.50 | 0.20 | 1.37 | 0.57 | 1.37 | 0.12 | 0.26 | 1.03 | 0.08 | 0.10 | 1.37 | |||||||||||||
1984 | 0.30 | 0.75 | 0.50 | 0.40 | 0.17 | 3.45 | 0.88 | 0.69 | 0.27 | 0.93 | 0.59 | 0.33 | 3.45 | |||||||||||||
1985 | 0.40 | 0.28 | 1.30 | 0.52 | 1.06 | 1.46 | 2.25 | 0.42 | 2.56 | 1.36 | 0.16 | 0.18 | 2.56 | |||||||||||||
1986 | 0.00 | 0.45 | 0.15 | 0.25 | 0.49 | 2.60 | 0.52 | 1.16 | 0.58 | 0.91 | 1.30 | 0.50 | 2.60 | |||||||||||||
1987 | 0.40 | 0.15 | 0.32 | 0.10 | 2.64 | 0.48 | 1.00 | 4.10 | 1.85 | 1.53 | 0.39 | 1.64 | 4.10 | |||||||||||||
1988 | 0.13 | 0.10 | 0.60 | 1.05 | 2.38 | 1.91 | 1.28 | 0.58 | 1.85 | 0.35 | 0.05 | 0.15 | 2.38 | |||||||||||||
1989 | 0.25 | 0.30 | 0.30 | 0.23 | 0.82 | 1.35 | 0.45 | 1.35 | 1.37 | 0.22 | 0.00 | 0.30 | 1.37 | |||||||||||||
1990 | 0.72 | 1.16 | 2.70 | 0.53 | 0.59 | 0.05 | 1.91 | 1.35 | 2.20 | 0.60 | 0.33 | 0.00 | 2.70 | |||||||||||||
1991 | 0.75 | 0.00 | 0.25 | 0.00 | 1.10 | 1.04 | 1.46 | 0.49 | 0.59 | 0.33 | 0.84 | 1.10 | 1.46 | |||||||||||||
1992 | 0.17 | 0.27 | 1.15 | 0.31 | 0.96 | 0.99 | 0.76 | 1.20 | 0.12 | 0.03 | 0.35 | 0.45 | 1.20 | |||||||||||||
1993 | 0.35 | 0.20 | a | 0.22 | a | 0.16 | 0.98 | 1.05 | 1.40 | 2.45 | 1.16 | 0.75 | 0.26 | 0.36 | 2.45 | |||||||||||
1994 | 0.36 | 0.00 | 0.40 | 0.36 | 0.67 | 1.42 | 1.77 | 0.61 | 0.58 | 0.30 | 0.45 | 0.10 | 1.77 | |||||||||||||
1995 | 0.18 | 0.03 | 0.11 | 0.22 | a | 1.41 | 1.03 | 1.21 | 0.15 | 1.52 | 1.79 | 0.03 | 0.81 | 1.79 | ||||||||||||
1996 | 0.05 | 0.29 | 0.00 | 0.00 | 0.38 | 0.65 | 1.80 | 1.92 | 1.68 | 0.17 | 0.22 | 0.19 | 1.92 | |||||||||||||
1997 | 0.20 | 0.18 | 0.10 | 1.50 | 0.57 | 1.07 | 0.90 | 3.00 | 1.09 | 0.55 | 0.30 | 0.93 | 3.00 | |||||||||||||
1998 | 0.09 | 0.44 | 1.52 | 0.05 | 0.08 | 9999.00 | z | 0.91 | 0.91 | 0.25 | 4.05 | 0.97 | 0.05 | 4.05 | ||||||||||||
1999 | 0.55 | 0.00 | 0.37 | 0.77 | 1.96 | 0.65 | 1.12 | 0.83 | 2.25 | 0.37 | 0.00 | 1.77 | 2.25 | |||||||||||||
2000 | 0.20 | 0.00 | 0.90 | 0.38 | 0.85 | 9999.00 | z | 0.10 | 0.00 | 0.02 | 0.64 | 0.22 | 1.08 | 1.08 | ||||||||||||
2001 | 0.83 | 9999.00 | z | 1.10 | 0.17 | 1.74 | 1.70 | 0.51 | 0.77 | 0.12 | 0.05 | 0.62 | 0.21 | 1.74 | ||||||||||||
2002 | 0.56 | 0.03 | 0.60 | 0.40 | 0.10 | 0.85 | 1.58 | 1.43 | 0.70 | 0.90 | 0.34 | 0.55 | 1.58 | |||||||||||||
2003 | 0.00 | 9999.00 | z | 0.18 | 0.00 | 0.12 | 1.30 | 0.10 | 2.20 | 0.60 | 0.10 | 0.27 | 9999.00 | z | 2.20 | |||||||||||
2004 | 0.50 | 0.60 | 1.00 | 0.87 | 0.39 | 0.97 | 0.93 | 0.84 | 1.77 | 2.33 | 0.50 | 0.20 | 2.33 | |||||||||||||
2005 | 0.30 | b | 0.60 | 1.20 | a | 0.77 | 0.77 | 9999.00 | z | 9999.00 | z | 2.00 | a | 0.05 | 0.25 | 0.30 | 0.03 | 2.00 | ||||||||
2006 | 0.03 | 0.10 | 0.68 | 0.41 | 0.34 | 1.00 | 1.82 | 1.50 | 0.90 | 0.63 | 0.20 | 0.90 | 1.82 | |||||||||||||
2007 | 0.40 | 0.22 | 3.10 | 0.35 | 1.67 | 1.11 | 0.80 | 1.00 | 1.47 | 0.20 | 0.10 | 0.90 | 3.10 | |||||||||||||
2008 | 0.00 | 0.35 | 0.35 | 0.35 | 0.81 | 0.58 | 0.33 | 2.24 | 0.66 | 1.59 | 0.25 | 0.00 | 2.24 | |||||||||||||
2009 | 0.02 | 0.00 | a | 0.70 | 0.71 | 0.30 | 0.57 | 0.66 | 0.90 | 1.05 | 1.41 | 0.15 | 0.20 | 1.41 | ||||||||||||
2010 | 0.80 | 9999.00 | z | 0.30 | 1.50 | 1.00 | 0.43 | 1.70 | 1.53 | 0.10 | 1.20 | 0.95 | 0.10 | 1.70 | ||||||||||||
2011 | 0.00 | 0.45 | 0.05 | 0.00 | 0.00 | 0.93 | 0.76 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 0.93 | ||||||||
2012 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 0.47 | 0.95 | 1.50 | 9999.00 | z | 0.45 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 1.50 | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.27 | 0.28 | 0.51 | 0.51 | 1.01 | 1.20 | 1.04 | 1.31 | 0.99 | 0.84 | 0.30 | 0.39 | 2.37 | |||||||||||||
S.D. | 0.27 | 0.26 | 0.61 | 0.42 | 0.91 | 0.86 | 0.58 | 1.03 | 0.77 | 0.80 | 0.29 | 0.45 | 1.05 | |||||||||||||
SKEW | 1.31 | 1.20 | 2.30 | 1.38 | 2.61 | 1.87 | 0.22 | 1.85 | 1.02 | 1.83 | 1.54 | 1.64 | 1.31 | |||||||||||||
MAX | 1.25 | 1.16 | 3.10 | 2.14 | 5.50 | 4.80 | 2.25 | 5.65 | 3.35 | 4.05 | 1.30 | 1.77 | 5.65 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.05 | 0.08 | 0.00 | 0.02 | 0.00 | 0.00 | 0.00 | 1.10 | |||||||||||||
NO YRS | 70 | 66 | 70 | 70 | 71 | 66 | 69 | 70 | 67 | 69 | 70 | 68 | 57 |