| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1991 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 1.38 | 1.75 | 0.69 | 0.42 | 0.00 | 0.66 | 1.36 | c | 0.41 | 6.67 | ||||||||
| 1992 | 0.38 | b | 0.07 | 0.75 | 1.29 | 0.39 | 0.54 | 0.97 | 0.00 | 0.38 | 1.13 | 0.42 | 1.52 | e | 7.84 | |||||||||||
| 1993 | 2.07 | 0.93 | 1.17 | 0.55 | 2.64 | 2.04 | 0.56 | 0.84 | 0.00 | 0.77 | 0.27 | 0.80 | 12.64 | |||||||||||||
| 1994 | 0.04 | 0.66 | 0.44 | 0.78 | 0.63 | 0.61 | a | 0.66 | 0.00 | 0.74 | 0.91 | 0.75 | 0.16 | 6.38 | ||||||||||||
| 1995 | 1.90 | a | 0.83 | a | 0.86 | a | 1.37 | a | 0.96 | 1.20 | 1.18 | 0.06 | 0.25 | 0.22 | 0.91 | 1.91 | 11.65 | |||||||||
| 1996 | 1.91 | 1.42 | 0.72 | 0.85 | 0.00 | z | 0.15 | 0.00 | 0.22 | 0.08 | 0.21 | 4.04 | a | 3.84 | a | 13.44 | ||||||||||
| 1997 | 1.70 | 0.71 | 0.18 | 0.63 | 1.33 | 1.30 | 0.92 | 0.46 | 0.86 | 0.67 | a | 0.00 | z | 0.09 | 8.85 | |||||||||||
| 1998 | 1.20 | 0.92 | 0.00 | z | 0.58 | 0.00 | z | 0.57 | 0.00 | z | 0.48 | 0.46 | 0.20 | 2.95 | 0.93 | 8.29 | ||||||||||
| 1999 | 1.21 | 1.54 | 0.50 | 0.00 | z | 0.00 | 1.29 | 0.11 | 3.32 | 0.00 | 1.17 | 0.15 | 0.19 | 9.48 | ||||||||||||
| 2000 | 2.08 | 0.86 | 0.47 | 0.61 | 0.42 | 0.01 | 0.11 | 0.00 | 0.40 | 0.88 | 0.26 | a | 0.12 | 6.22 | ||||||||||||
| 2001 | 0.14 | 0.86 | 0.26 | 0.81 | 0.07 | 0.62 | 1.35 | 0.08 | 0.99 | 0.24 | b | 1.75 | 1.36 | a | 8.53 | |||||||||||
| 2002 | 0.99 | 0.04 | 0.31 | 0.19 | 0.21 | 0.00 | z | 0.02 | 0.50 | 0.18 | 0.28 | 0.07 | 1.18 | 3.97 | ||||||||||||
| 2003 | 1.01 | 0.00 | z | 0.41 | 1.06 | 1.57 | 0.00 | 0.00 | 0.37 | 0.00 | z | 0.31 | 0.43 | a | 2.07 | a | 7.23 | |||||||||
| 2004 | 1.12 | a | 1.57 | 0.26 | 0.44 | 1.86 | 0.55 | 0.19 | 0.66 | 0.06 | 1.06 | 0.45 | 0.00 | z | 8.22 | |||||||||||
| 2005 | 0.51 | 0.33 | 0.81 | 1.89 | 3.13 | 0.58 | 0.00 | z | 0.00 | 0.26 | 0.83 | 1.32 | a | 2.36 | c | 12.02 | ||||||||||
| 2006 | 1.74 | a | 0.85 | 0.64 | a | 1.35 | 1.18 | 1.83 | 0.30 | 0.33 | 1.13 | 0.27 | 1.47 | 0.00 | z | 11.09 | ||||||||||
| 2007 | 0.56 | b | 0.55 | a | 0.12 | 0.67 | 0.19 | 0.96 | 0.61 | 0.00 | z | 0.16 | 1.70 | a | 1.57 | 0.74 | 7.83 | |||||||||
| 2008 | 1.46 | 0.22 | b | 0.03 | 0.27 | 1.12 | 0.38 | 0.05 | 0.40 | 0.05 | 0.00 | z | 0.29 | 1.08 | 5.35 | |||||||||||
| 2009 | 0.58 | 0.50 | 0.60 | 0.85 | 0.59 | 2.82 | 0.02 | 0.93 | 0.00 | 0.95 | 0.53 | a | 0.35 | a | 8.72 | |||||||||||
| 2010 | 1.28 | 0.31 | 0.32 | 1.63 | 0.83 | 0.84 | 0.42 | 0.28 | 1.25 | 1.27 | 0.82 | 1.70 | 10.95 | |||||||||||||
| 2011 | 0.27 | 1.23 | 0.24 | 0.38 | 1.50 | a | 0.59 | 0.46 | 0.23 | 0.02 | 0.40 | 0.45 | 0.40 | 6.17 | ||||||||||||
| 2012 | 1.29 | 0.82 | 1.58 | 1.02 | b | 0.26 | 1.30 | 0.43 | 0.09 | a | 0.14 | 0.82 | 0.99 | a | 1.56 | 10.30 | ||||||||||
| 2013 | 0.06 | 0.01 | 0.34 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.41 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 1.07 | 0.73 | 0.52 | 0.86 | 1.01 | 0.95 | 0.45 | 0.46 | 0.35 | 0.71 | 1.01 | 1.14 | 8.94 | |||||||||||||
| S.D. | 0.67 | 0.47 | 0.37 | 0.46 | 0.85 | 0.72 | 0.41 | 0.71 | 0.40 | 0.42 | 0.98 | 0.94 | 2.36 | |||||||||||||
| SKEW | -0.05 | 0.19 | 1.24 | 0.63 | 0.97 | 0.90 | 0.66 | 3.30 | 1.05 | 0.43 | 1.76 | 1.14 | 0.19 | |||||||||||||
| MAX | 2.08 | 1.57 | 1.58 | 1.89 | 3.13 | 2.82 | 1.35 | 3.32 | 1.25 | 1.70 | 4.04 | 3.84 | 12.64 | |||||||||||||
| MIN | 0.04 | 0.01 | 0.03 | 0.19 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.07 | 0.09 | 6.17 | |||||||||||||
| NO YRS | 22 | 21 | 21 | 20 | 20 | 21 | 20 | 21 | 21 | 21 | 21 | 20 | 10 | |||||||||||||