YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1973 | ----- | z | ----- | z | ----- | z | ----- | z | 0.14 | 0.12 | 0.01 | 0.20 | 0.12 | 0.36 | 0.51 | 0.31 | ----- | z | ||||||||
1974 | 0.26 | 0.10 | 0.40 | 0.41 | ----- | z | 0.05 | 0.28 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||||
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.29 | 0.32 | 0.16 | 0.24 | 0.50 | ----- | z | |||||
1994 | 0.02 | 0.13 | 0.27 | 0.20 | 0.45 | 0.09 | 0.08 | 0.00 | 0.00 | 0.06 | 0.19 | e | 0.08 | c | 0.45 | h | ||||||||||
1995 | 0.27 | a | 0.13 | 0.25 | 0.59 | 0.29 | 0.20 | 0.10 | 0.13 | 0.00 | 0.12 | 0.09 | 0.50 | 0.59 | a | |||||||||||
1996 | 0.78 | 0.39 | 0.19 | 0.18 | 0.30 | 0.51 | 0.00 | 0.07 | 0.22 | 0.35 | 0.13 | 0.19 | 0.78 | |||||||||||||
1997 | 0.70 | 0.40 | 0.06 | 0.25 | 0.05 | 0.25 | 0.15 | 0.05 | 0.03 | 0.05 | 0.08 | 0.10 | 0.70 | |||||||||||||
1998 | 0.33 | 0.27 | 0.21 | 0.15 | 0.34 | 0.55 | 0.04 | 0.00 | 0.95 | 0.09 | 0.56 | 0.35 | 0.95 | |||||||||||||
1999 | 0.25 | 0.27 | 0.02 | 0.19 | 0.15 | 0.32 | 0.00 | 0.34 | 0.00 | 0.03 | 0.16 | 0.06 | 0.34 | |||||||||||||
2000 | 0.30 | 0.14 | a | 0.80 | a | 0.22 | a | 0.17 | 0.03 | 0.00 | 0.01 | 0.07 | a | 0.31 | 0.30 | 0.35 | a | 0.80 | e | |||||||
2001 | 0.22 | 0.15 | a | 0.37 | 0.23 | 0.00 | 0.05 | a | 0.40 | a | 0.01 | 0.08 | 0.03 | 0.28 | 0.26 | a | 0.40 | d | ||||||||
2002 | 0.19 | 0.18 | 0.11 | 0.17 | a | 0.04 | 0.14 | 0.00 | 0.10 | 0.17 | 0.02 | 0.10 | b | 0.07 | a | 0.19 | d | |||||||||
2003 | 0.13 | 0.07 | a | 0.08 | a | 0.08 | a | 0.50 | 0.15 | 0.12 | 0.12 | 0.20 | 0.01 | 0.25 | 0.33 | 0.50 | c | |||||||||
2004 | 0.65 | 0.19 | 0.16 | 0.18 | 0.27 | 0.00 | e | 0.20 | 0.17 | a | 0.05 | 0.83 | a | 0.16 | a | 0.20 | 0.83 | h | ||||||||
2005 | 0.10 | f | 0.10 | a | 0.00 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.41 | 0.44 | 0.29 | a | ----- | z | ||
2006 | 0.30 | c | 0.17 | 0.55 | 0.48 | c | 0.36 | 0.23 | 0.30 | 0.00 | 0.05 | a | 0.22 | 0.08 | 0.30 | a | 0.55 | h | ||||||||
2007 | 0.07 | c | 0.20 | c | 0.04 | 0.17 | 0.05 | 0.39 | 0.21 | 0.04 | 0.26 | 0.43 | 0.14 | 0.24 | 0.43 | f | ||||||||||
2008 | 0.19 | 0.10 | 0.14 | 0.02 | 0.29 | 0.35 | 0.24 | 0.05 | 0.00 | s | 0.06 | 0.31 | 0.20 | a | 0.35 | t | ||||||||||
2009 | 0.17 | 0.70 | 0.70 | 0.00 | 0.30 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.37 | 1.10 | b | 0.19 | 0.46 | ----- | z | |||
2011 | 0.26 | 0.32 | 0.26 | 0.54 | d | 0.56 | 0.26 | 0.13 | 0.14 | a | 0.13 | a | 0.34 | b | 0.07 | d | 0.11 | 0.56 | l | |||||||
2012 | 0.25 | 0.07 | c | 0.32 | 0.22 | 0.79 | 0.16 | 0.11 | 0.07 | 0.01 | 0.07 | e | 0.15 | 0.34 | h | 0.79 | p | |||||||||
2013 | 0.14 | a | 0.07 | 0.11 | 0.17 | 0.42 | 0.66 | 0.01 | a | 0.36 | 0.44 | 0.07 | 0.33 | 0.03 | g | 0.66 | i | |||||||||
2014 | 0.21 | g | 0.10 | f | 0.30 | f | 0.21 | c | 0.27 | k | 0.22 | h | 0.12 | t | 0.22 | 1.02 | 0.07 | a | 0.20 | i | 0.31 | a | ----- | z | ||
2015 | 0.08 | a | 0.19 | 0.01 | g | 0.28 | 0.70 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.28 | 0.21 | 0.27 | 0.24 | 0.29 | 0.24 | 0.13 | 0.12 | 0.22 | 0.24 | 0.23 | 0.26 | 0.56 | |||||||||||||
S.D. | 0.20 | 0.15 | 0.22 | 0.15 | 0.20 | 0.19 | 0.12 | 0.11 | 0.29 | 0.28 | 0.14 | 0.14 | 0.25 | |||||||||||||
SKEW | 1.33 | 1.88 | 1.15 | 0.92 | 0.62 | 0.79 | 0.70 | 0.85 | 1.83 | 1.82 | 0.98 | 0.18 | 0.12 | |||||||||||||
MAX | 0.78 | 0.70 | 0.80 | 0.59 | 0.79 | 0.66 | 0.40 | 0.36 | 1.02 | 1.10 | 0.56 | 0.50 | 0.95 | |||||||||||||
MIN | 0.02 | 0.07 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.07 | 0.06 | 0.19 | |||||||||||||
YRS | 20 | 21 | 19 | 21 | 19 | 19 | 19 | 20 | 20 | 22 | 21 | 20 | 8 |