YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1958 | ----- | z | ----- | z | ----- | z | ----- | z | 0.49 | 0.03 | 0.00 | 0.00 | 0.32 | 0.01 | 0.09 | 0.12 | ----- | z | ||||||||
1959 | 1.08 | 1.07 | 0.15 | 0.18 | 0.05 | 0.00 | 0.00 | 0.00 | 2.60 | 0.01 | 0.00 | 0.21 | 2.60 | |||||||||||||
1960 | 1.03 | 0.80 | 0.13 | 0.71 | 0.14 | 0.00 | 0.00 | 0.00 | 0.01 | 0.00 | 0.82 | 0.38 | 1.03 | |||||||||||||
1961 | 0.78 | 0.52 | 0.69 | 0.50 | 0.11 | 0.18 | 0.00 | 0.00 | 0.00 | 0.03 | 0.79 | 0.34 | 0.79 | |||||||||||||
1962 | 1.15 | 1.00 | 0.84 | 0.05 | 0.02 | 0.07 | 0.00 | 0.02 | 0.00 | 0.59 | 0.32 | 1.41 | 1.41 | |||||||||||||
1963 | 1.54 | 0.63 | 1.34 | 0.66 | 0.11 | 0.00 | 0.00 | 0.02 | 0.20 | 0.90 | 0.88 | 0.26 | 1.54 | |||||||||||||
1964 | 0.85 | 0.07 | 0.73 | 0.22 | 0.25 | 0.29 | 0.00 | 0.20 | 0.00 | 0.51 | 0.85 | 0.85 | 0.85 | |||||||||||||
1965 | 0.37 | 0.23 | 0.51 | 0.43 | 0.00 | 0.00 | 0.00 | 0.32 | 0.02 | 0.13 | 1.29 | 1.03 | 1.29 | |||||||||||||
1966 | 1.08 | 0.28 | 0.10 | 0.09 | 0.01 | 0.01 | 0.23 | 0.00 | 0.16 | 0.00 | 0.46 | 1.79 | 1.79 | |||||||||||||
1967 | 1.12 | 0.31 | 0.76 | 0.83 | 0.09 | 0.46 | 0.00 | 0.00 | 0.16 | 0.08 | 1.10 | 0.59 | 1.12 | |||||||||||||
1968 | 0.50 | 0.24 | 0.85 | 0.30 | 0.03 | 0.00 | 0.00 | 0.06 | 0.00 | 0.16 | 0.71 | 0.52 | 0.85 | |||||||||||||
1969 | 1.38 | 0.93 | 0.53 | 0.69 | 0.00 | 0.02 | 0.00 | 0.00 | 0.00 | 0.50 | 0.69 | 1.59 | 1.59 | |||||||||||||
1970 | 1.75 | 0.80 | 0.94 | 0.00 | 0.00 | 0.29 | 0.00 | 0.00 | 0.00 | 0.24 | 2.23 | a | 0.88 | 2.23 | a | |||||||||||
1971 | 0.00 | 0.33 | 0.53 | 0.76 | 0.20 | 0.01 | 0.00 | 0.00 | 0.09 | 0.00 | 0.45 | 1.81 | c | 1.81 | c | |||||||||||
1972 | 0.42 | 0.47 | 0.06 | 0.14 | 0.00 | 0.00 | 0.02 | 0.00 | 0.00 | 0.80 | 1.07 | 0.90 | 1.07 | |||||||||||||
1973 | 1.03 | 1.63 | 1.40 | 0.04 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.96 | 0.77 | 2.72 | 2.72 | |||||||||||||
1974 | 1.31 | 0.51 | 2.08 | 2.09 | 0.00 | 0.29 | 0.35 | 0.00 | 0.00 | 0.78 | 0.13 | 0.70 | 2.09 | |||||||||||||
1975 | 0.85 | 1.38 | 1.26 | 0.45 | 0.00 | 0.00 | 0.02 | 0.39 | 0.00 | 0.90 | 0.50 | 0.16 | 1.38 | |||||||||||||
1976 | 0.21 | 0.56 | 0.89 | 0.41 | 0.00 | 0.05 | 0.00 | 0.54 | 0.58 | 0.30 | 0.30 | 1.59 | 1.59 | |||||||||||||
1977 | 1.85 | 0.13 | 0.65 | 0.13 | 0.48 | 0.00 | 0.00 | 0.00 | 0.10 | 0.00 | 0.29 | 2.95 | 2.95 | |||||||||||||
1978 | 1.34 | d | 1.48 | a | 1.61 | b | 1.37 | a | 0.00 | 0.00 | 0.00 | 0.00 | 0.28 | 0.00 | 1.31 | ----- | z | ----- | z | |||||||
1979 | 1.27 | b | 1.90 | d | 0.69 | c | 0.32 | 0.04 | 0.00 | 0.15 | 0.00 | 0.00 | 0.54 | 0.83 | a | 1.24 | b | 1.90 | l | |||||||
1980 | 1.99 | a | 1.49 | b | 0.80 | a | 0.31 | 0.14 | a | 0.00 | 0.67 | 0.00 | 0.00 | 0.00 | 0.00 | 1.02 | 1.99 | e | ||||||||
1981 | 1.52 | 0.82 | 0.63 | a | 0.80 | 0.00 | b | 0.00 | 0.00 | 0.00 | 0.00 | 1.18 | 1.31 | c | 1.08 | 1.52 | f | |||||||||
1982 | 1.29 | 1.95 | 1.14 | 0.87 | ----- | z | 0.18 | 0.00 | 0.00 | 0.00 | b | 0.58 | 1.62 | a | 1.50 | ----- | z | |||||||||
1983 | 1.43 | 0.76 | a | 0.94 | 0.83 | 0.22 | 0.00 | 0.00 | 0.23 | 1.03 | 0.35 | 1.60 | 0.82 | b | 1.60 | c | ||||||||||
1984 | 0.08 | 0.39 | 0.41 | 0.21 | 0.00 | 0.07 | 0.00 | 0.00 | 0.00 | 0.69 | 0.96 | 0.86 | 0.96 | |||||||||||||
1985 | 0.24 | 1.04 | 0.72 | 0.00 | 0.00 | 0.10 | 0.00 | 0.00 | 0.00 | ----- | z | 1.29 | a | 0.34 | a | ----- | z | |||||||||
1986 | 0.70 | 0.94 | 2.00 | a | 0.66 | 0.00 | 0.00 | 0.00 | 0.00 | 0.60 | 0.00 | 0.00 | 0.22 | 2.00 | a | |||||||||||
1987 | 1.26 | 2.38 | 0.92 | ----- | z | 0.00 | ----- | z | 0.00 | 0.00 | 0.00 | 0.55 | 0.67 | 0.12 | i | ----- | z | |||||||||
1988 | 0.56 | 0.77 | 0.08 | 0.40 | 0.30 | 0.31 | 0.00 | 0.00 | 0.00 | 0.08 | 0.41 | 1.08 | b | 1.08 | b | |||||||||||
1989 | 0.49 | 1.02 | 0.64 | b | 0.27 | 0.04 | 0.00 | 0.00 | ----- | z | 0.45 | 0.78 | 1.15 | 0.07 | ----- | z | ||||||||||
1990 | 1.29 | 0.73 | 0.64 | 0.42 | ----- | z | 0.00 | 0.00 | 0.00 | 0.08 | 0.15 | 0.28 | 0.20 | ----- | z | |||||||||||
1991 | 0.22 | 0.64 | 1.43 | 0.19 | a | 0.03 | 0.00 | 0.00 | 0.05 | a | 0.08 | 0.69 | 0.00 | a | 1.82 | 1.82 | c | |||||||||
1992 | 1.07 | 1.33 | a | 0.83 | b | 0.07 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.39 | 0.00 | 0.93 | 1.33 | c | ||||||||||
1993 | 1.29 | 1.07 | b | 1.37 | b | 0.19 | 0.53 | 0.18 | 0.00 | 0.00 | 0.00 | 0.13 | 0.31 | 0.87 | a | 1.37 | e | |||||||||
1994 | 1.45 | a | 1.16 | a | 0.41 | 0.70 | 0.74 | 0.02 | a | 0.00 | 0.00 | 0.07 | 0.36 | 0.88 | d | 0.35 | c | 1.45 | j | |||||||
1995 | 1.84 | e | 0.30 | 1.87 | c | 0.45 | b | 0.22 | b | 0.47 | 0.00 | 0.00 | 0.00 | 0.00 | 0.14 | 0.65 | 1.87 | l | ||||||||
1996 | 0.86 | 0.88 | 1.01 | 0.33 | 0.85 | 0.01 | 0.01 | 0.02 | 0.06 | 0.37 | 2.05 | 1.59 | 2.05 | |||||||||||||
1997 | 1.05 | 0.09 | 0.08 | 0.19 | 0.05 | 0.07 | 0.00 | 0.00 | 0.00 | 0.06 | 2.05 | 1.23 | 2.05 | |||||||||||||
1998 | 1.16 | 2.38 | 0.58 | 0.50 | 0.61 | 0.06 | 0.00 | 0.00 | 0.04 | 0.55 | 0.78 | 0.31 | 2.38 | |||||||||||||
1999 | 0.85 | 0.84 | 0.64 | 0.54 | 0.02 | 0.21 | 0.00 | 0.02 | 0.04 | 0.11 | 0.37 | 0.11 | 0.85 | |||||||||||||
2000 | 2.96 | 1.34 | 1.23 | 0.39 | 0.11 | 0.02 | 0.00 | 0.19 | 0.06 | 0.72 | 0.15 | 0.27 | 2.96 | |||||||||||||
2001 | 0.66 | 0.63 | 0.85 | 0.75 | 0.01 | 0.01 | 0.00 | 0.00 | 0.16 | 0.08 | 0.90 | 0.83 | 0.90 | |||||||||||||
2002 | 0.31 | 0.48 | 0.64 | 0.11 | 0.06 | 0.00 | 0.00 | 0.02 | 0.00 | 0.00 | 1.34 | 0.74 | 1.34 | |||||||||||||
2003 | 1.00 | 0.50 | 0.58 | 0.46 | 0.22 | 0.02 | 0.00 | 0.07 | 0.01 | 0.29 | 0.24 | 1.33 | 1.33 | |||||||||||||
2004 | 0.57 | 1.11 | 0.28 | 0.02 | 0.03 | 0.00 | 0.03 | 0.00 | 0.02 | 0.84 | 0.21 | 1.17 | 1.17 | |||||||||||||
2005 | 0.65 | 0.90 | 1.82 | 0.40 | 0.38 | 0.20 | 0.03 | 0.01 | 0.02 | 0.07 | 0.28 | 1.08 | 1.82 | |||||||||||||
2006 | 1.38 | 0.23 | 0.77 | 1.06 | 0.49 | 0.00 | 0.00 | 0.00 | 0.00 | 0.12 | 1.34 | a | 1.15 | 1.38 | a | |||||||||||
2007 | 0.44 | 0.50 | 0.28 | 0.36 | 0.11 | 0.00 | 0.00 | 0.01 | 0.49 | 0.46 | 0.40 | 0.52 | 0.52 | |||||||||||||
2008 | 1.26 | 0.96 | 0.25 | 0.12 | 0.00 | 0.04 | 0.02 | 0.00 | 0.03 | 0.21 | i | 0.73 | e | 0.83 | 1.26 | n | ||||||||||
2009 | 0.86 | 1.15 | b | 0.77 | 0.13 | 0.23 | 0.06 | 0.00 | 0.35 | 0.10 | 1.05 | 0.18 | 0.65 | c | 1.15 | e | ||||||||||
2010 | 1.10 | 1.00 | 0.91 | 1.35 | 0.27 | 0.03 | 0.02 | 0.04 | 0.00 | 0.30 | 0.62 | 1.08 | 1.35 | |||||||||||||
2011 | 0.78 | 0.79 | s | 1.35 | q | 0.13 | b | 0.37 | x | 0.18 | y | ----- | z | ----- | z | ----- | z | ----- | z | 0.61 | u | ----- | z | ----- | z | |
2012 | 0.90 | g | 0.31 | d | 1.63 | a | 0.66 | b | 0.12 | a | 0.00 | d | 0.00 | k | 0.03 | b | 0.00 | e | 0.15 | n | 2.48 | 1.13 | ----- | z | ||
2013 | 0.73 | 0.38 | 0.35 | 0.14 | 0.00 | 0.00 | r | 0.00 | 0.04 | 0.14 | 0.18 | 0.45 | 0.29 | 0.73 | r | |||||||||||
2014 | 0.10 | 1.60 | 0.55 | 0.40 | 0.01 | 0.00 | 0.01 | 0.00 | 0.15 | 0.41 | 1.35 | 2.30 | 2.30 | |||||||||||||
2015 | 0.00 | 0.58 | 0.14 | 0.37 | 0.10 | 0.15 | 0.04 | 0.05 | 0.00 | 0.20 | 1.60 | k | 0.95 | 1.60 | k | |||||||||||
2016 | 1.22 | 0.70 | 1.13 | 0.25 | 0.08 | 0.01 | 0.00 | 0.04 | 0.00 | 1.35 | 0.52 | c | 0.00 | v | 1.35 | y | ||||||||||
2017 | 1.56 | 2.05 | 0.63 | 0.40 | 0.03 | a | 0.07 | b | 0.00 | k | 0.01 | f | 0.04 | 0.23 | a | 0.55 | 0.07 | 2.05 | u | |||||||
2018 | 0.90 | h | 0.17 | 0.53 | b | 1.76 | 0.05 | c | 0.00 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.98 | 0.86 | 0.80 | 0.47 | 0.14 | 0.07 | 0.03 | 0.05 | 0.14 | 0.37 | 0.75 | 0.92 | 1.59 | |||||||||||||
S.D. | 0.56 | 0.56 | 0.49 | 0.42 | 0.20 | 0.12 | 0.10 | 0.11 | 0.38 | 0.35 | 0.59 | 0.64 | 0.62 | |||||||||||||
SKEW | 0.56 | 0.91 | 0.74 | 1.79 | 1.85 | 1.96 | 4.90 | 2.85 | 5.15 | 0.82 | 0.94 | 1.01 | 0.56 | |||||||||||||
MAX | 2.96 | 2.38 | 2.08 | 2.09 | 0.85 | 0.47 | 0.67 | 0.54 | 2.60 | 1.35 | 2.48 | 2.95 | 2.96 | |||||||||||||
MIN | 0.00 | 0.07 | 0.06 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.07 | 0.52 | |||||||||||||
YRS | 58 | 59 | 59 | 59 | 58 | 57 | 57 | 57 | 59 | 56 | 58 | 56 | 39 |