YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1978 | ----- | z | ----- | z | ----- | z | ----- | z | 1.24 | ----- | z | 0.22 | ----- | z | ----- | z | ----- | z | ----- | z | 0.64 | ----- | z | |||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.83 | 0.19 | 0.70 | 0.45 | 0.99 | 1.54 | 0.92 | ----- | z | |||||||
1980 | 0.38 | ----- | z | ----- | z | 1.72 | 1.90 | 0.09 | 0.96 | 0.76 | 0.69 | 0.18 | 0.26 | 0.02 | ----- | z | ||||||||||
1981 | 0.03 | 0.57 | 1.18 | 0.49 | 0.58 | 0.54 | 0.87 | 0.60 | 0.30 | 1.21 | 0.31 | 0.44 | 1.21 | |||||||||||||
1982 | 0.15 | 0.57 | 0.38 | 0.35 | 1.43 | 0.71 | 1.72 | 1.13 | 0.63 | 0.36 | 0.29 | 1.27 | 1.72 | |||||||||||||
1983 | 0.03 | 0.12 | 3.30 | 0.97 | 1.38 | 2.40 | 0.95 | 0.33 | 0.17 | 0.09 | 1.08 | 0.26 | 3.30 | |||||||||||||
1984 | 0.20 | 1.01 | 0.77 | 1.46 | 0.49 | 0.31 | 0.63 | 1.05 | 0.67 | 2.50 | 0.15 | 0.30 | 2.50 | |||||||||||||
1985 | 0.10 | 1.14 | a | 0.91 | 0.96 | 0.57 | 1.37 | 0.91 | 1.00 | 0.60 | 0.27 | 0.97 | 0.47 | 1.37 | a | |||||||||||
1986 | 0.64 | 0.30 | b | 0.23 | 2.43 | 0.92 | 0.73 | 0.81 | 0.45 | 0.12 | 0.93 | 0.86 | 0.39 | 2.43 | b | |||||||||||
1987 | 0.43 | 0.46 | 0.59 | 0.88 | 1.57 | 0.94 | 0.66 | 0.95 | 0.09 | 0.98 | 1.80 | 1.42 | 1.80 | |||||||||||||
1988 | 0.23 | 0.52 | 0.97 | 0.76 | 1.37 | a | 0.48 | 0.30 | 1.19 | 1.09 | 0.09 | 0.42 | 0.75 | b | 1.37 | c | ||||||||||
1989 | 0.76 | 0.41 | 0.32 | 0.48 | 0.52 | 0.94 | 0.87 | 0.35 | 0.52 | 0.44 | 0.48 | 0.30 | 0.94 | |||||||||||||
1990 | 0.52 | 0.39 | 2.12 | 0.43 | 1.14 | 0.27 | 0.53 | 0.60 | 0.56 | 0.80 | 0.63 | 0.09 | 2.12 | |||||||||||||
1991 | 0.40 | 0.16 | 0.41 | 0.83 | 1.31 | 1.29 | 1.43 | 0.71 | 0.15 | 0.36 | 1.00 | 0.02 | 1.43 | |||||||||||||
1992 | 0.28 | ----- | z | ----- | z | 0.12 | 0.76 | 0.80 | 0.92 | 1.91 | 1.45 | 0.18 | 1.05 | 0.52 | ----- | z | ||||||||||
1993 | 0.09 | 0.28 | 1.07 | 0.62 | 0.37 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||||
1994 | ----- | z | ----- | z | 0.62 | 0.84 | 0.46 | 0.15 | 0.71 | 0.33 | 0.37 | 0.34 | 0.41 | 0.21 | ----- | z | ||||||||||
1995 | 0.32 | 0.38 | 0.77 | 1.01 | 1.21 | 0.92 | 0.44 | 0.33 | 0.86 | 0.62 | 0.58 | 0.14 | 1.21 | |||||||||||||
1996 | 0.54 | 0.11 | 1.16 | 0.53 | 1.22 | 0.88 | 0.52 | 0.36 | 0.73 | 0.32 | 0.43 | 0.39 | 1.22 | |||||||||||||
1997 | 0.21 | 0.83 | 0.56 | 1.40 | 0.28 | 1.20 | 0.75 | 2.10 | 0.54 | 2.30 | 0.87 | 0.33 | 2.30 | |||||||||||||
1998 | 0.74 | 0.11 | 1.48 | 2.15 | 0.61 | 0.50 | 0.50 | 0.62 | 0.52 | 0.39 | 0.41 | 0.46 | 2.15 | |||||||||||||
1999 | 0.53 | a | 0.27 | 0.20 | 1.64 | 1.46 | 0.41 | 0.98 | 2.13 | 0.55 | 0.65 | 0.75 | 0.89 | 2.13 | a | |||||||||||
2000 | 0.41 | 0.26 | 0.97 | a | 0.64 | 0.65 | 0.51 | 1.44 | 0.85 | 0.66 | 0.27 | 0.51 | ----- | z | ----- | z | ||||||||||
2001 | 0.34 | 0.36 | 0.54 | 1.77 | 0.95 | 0.66 | 0.69 | 1.30 | 0.90 | 0.13 | 0.35 | 0.41 | 1.77 | |||||||||||||
2002 | 0.34 | 0.11 | 0.56 | 0.09 | 1.15 | 0.48 | 0.55 | 0.43 | 1.02 | 0.88 | 0.10 | 0.01 | 1.15 | |||||||||||||
2003 | 0.29 | 0.58 | e | 2.40 | 0.55 | 0.80 | 0.39 | 0.53 | 0.71 | 0.25 | 0.05 | 0.28 | 0.47 | 2.40 | e | |||||||||||
2004 | 0.50 | 0.50 | 0.85 | 1.30 | 0.70 | 1.04 | 0.80 | 1.26 | 0.49 | 0.80 | 0.49 | 0.25 | 1.30 | |||||||||||||
2005 | 0.48 | 0.13 | 0.40 | 1.65 | 0.48 | 0.36 | 0.47 | 1.75 | 0.36 | 1.73 | 0.50 | 0.41 | 1.75 | |||||||||||||
2006 | 0.35 | 0.17 | 0.53 | 0.23 | 0.26 | 0.21 | 0.99 | 0.45 | 0.78 | 1.25 | 0.75 | 1.57 | 1.57 | |||||||||||||
2007 | 0.70 | 0.57 | 0.51 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.05 | 0.24 | ----- | z | ||
2010 | 0.13 | 0.64 | 1.51 | 1.23 | 0.62 | 0.84 | 0.53 | 0.37 | 0.07 | ----- | z | 0.08 | 0.27 | ----- | z | |||||||||||
2011 | 0.48 | 0.68 | ----- | z | 0.61 | 0.87 | 1.44 | 0.78 | 0.26 | a | 0.78 | 0.80 | 0.76 | 1.19 | ----- | z | ||||||||||
2012 | 0.24 | 0.87 | 0.14 | 0.78 | 0.60 | a | 1.06 | 0.66 | 0.45 | 1.15 | 0.53 | 0.18 | 0.17 | 1.15 | a | |||||||||||
2013 | 0.33 | 0.54 | 0.82 | 0.55 | 0.90 | 0.20 | 0.46 | 1.02 | 2.46 | 0.37 | 0.15 | 0.22 | 2.46 | |||||||||||||
2014 | 0.46 | 0.09 | 0.69 | 0.74 | 1.16 | 0.47 | 1.16 | 1.12 | 0.63 | a | 0.86 | 0.15 | 0.55 | 1.16 | a | |||||||||||
2015 | 0.31 | 0.62 | 0.47 | 2.06 | 1.20 | 1.52 | 0.57 | 0.70 | 0.20 | 1.16 | 0.76 | 0.69 | 2.06 | |||||||||||||
2016 | 0.25 | 0.65 | 1.06 | 1.42 | 0.51 | 0.70 | 0.63 | 1.25 | 0.14 | 0.25 | 0.44 | 0.52 | 1.42 | |||||||||||||
2017 | 0.23 | 0.35 | 1.30 | 1.60 | 1.41 | b | 0.18 | g | 1.05 | 0.70 | 0.84 | 0.79 | 0.23 | 0.17 | 1.60 | i | ||||||||||
2018 | 0.32 | 0.33 | 1.13 | 0.69 | 1.33 | 0.60 | 1.57 | 0.96 | 1.48 | 0.45 | 0.39 | 0.05 | 1.57 | |||||||||||||
2019 | 0.77 | 0.50 | 1.54 | 0.56 | 1.05 | 0.42 | 0.60 | a | 0.49 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||||||
2020 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.37 | 0.45 | 0.94 | 0.99 | 0.93 | 0.77 | 0.77 | 0.86 | 0.65 | 0.69 | 0.58 | 0.47 | 1.72 | |||||||||||||
S.D. | 0.20 | 0.26 | 0.66 | 0.59 | 0.41 | 0.50 | 0.35 | 0.50 | 0.47 | 0.58 | 0.40 | 0.39 | 0.56 | |||||||||||||
SKEW | 0.38 | 0.66 | 1.69 | 0.65 | 0.21 | 1.20 | 0.88 | 1.08 | 1.71 | 1.52 | 1.14 | 1.28 | 0.88 | |||||||||||||
MAX | 0.77 | 1.14 | 3.30 | 2.43 | 1.90 | 2.40 | 1.72 | 2.13 | 2.46 | 2.50 | 1.80 | 1.57 | 3.30 | |||||||||||||
MIN | 0.03 | 0.09 | 0.14 | 0.09 | 0.26 | 0.09 | 0.19 | 0.26 | 0.07 | 0.05 | 0.08 | 0.01 | 0.94 | |||||||||||||
YRS | 37 | 35 | 34 | 37 | 38 | 36 | 38 | 37 | 36 | 35 | 37 | 37 | 27 |