| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1988 | ----- | z | ----- | z | ----- | z | 45.43 | i | 47.25 | a | 58.09 | a | 65.48 | b | 62.10 | b | 54.97 | 50.83 | a | 36.05 | 27.31 | 50.26 | ||||
| 1989 | 20.79 | b | 20.54 | 38.50 | a | 47.09 | c | 47.90 | k | 56.92 | e | 61.17 | m | 58.82 | 53.59 | a | 44.13 | 35.38 | b | 29.87 | 40.56 | |||||
| 1990 | 30.90 | a | 27.52 | e | 38.08 | e | 47.46 | f | 47.31 | o | 60.79 | r | 63.98 | ----- | z | 56.58 | e | 44.94 | m | 34.90 | 20.35 | a | 38.90 | |||
| 1991 | 29.52 | b | 38.48 | d | 34.92 | a | 40.98 | 45.50 | 53.45 | a | 65.27 | 63.80 | d | 57.20 | e | 54.25 | o | 38.54 | b | 31.73 | 45.40 | |||||
| 1992 | 32.78 | a | 38.43 | a | 40.50 | 45.34 | b | ----- | z | 60.67 | c | 63.37 | a | 63.85 | a | 54.58 | r | 47.12 | g | 35.93 | 23.48 | a | 44.93 | |||
| 1993 | 20.95 | c | 27.61 | 40.52 | 42.35 | 51.44 | 54.42 | 55.90 | a | 59.02 | 55.75 | 47.89 | 30.62 | 30.12 | a | 43.05 | ||||||||||
| 1994 | 33.45 | 31.93 | 40.81 | 43.83 | 52.47 | 56.28 | 67.56 | 61.10 | 56.62 | 43.76 | 27.72 | 27.60 | 45.26 | |||||||||||||
| 1995 | 34.65 | 38.50 | 37.24 | 41.23 | 50.31 | 55.42 | 61.69 | 59.11 | 56.73 | s | 45.31 | g | 43.33 | 33.00 | 45.45 | |||||||||||
| 1996 | 31.90 | 35.05 | 39.63 | 43.35 | 47.28 | k | 56.58 | j | 69.25 | z | ----- | z | ----- | z | 53.20 | z | 39.53 | 33.32 | l | 37.89 | ||||||
| 1997 | 31.52 | 33.85 | o | 41.22 | d | 40.81 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.37 | ||
| 1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.32 | m | 29.74 | b | 29.74 | |
| 2013 | 28.19 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.50 | z | 9999.00 | |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 29.61 | 32.26 | 39.05 | 43.45 | 49.39 | 56.46 | 63.32 | 61.11 | 55.78 | 46.65 | 35.78 | 28.13 | 44.15 | |||||||||||||
| S.D. | 5.17 | 6.60 | 2.06 | 2.21 | 2.92 | 2.41 | 3.76 | 2.21 | 1.33 | 3.35 | 4.63 | 4.02 | 1.57 | |||||||||||||
| SKEW | -1.05 | -0.57 | -0.83 | 0.46 | -0.34 | 0.53 | -1.09 | 0.18 | -0.68 | 0.35 | -0.21 | -0.80 | -0.01 | |||||||||||||
| MAX | 34.65 | 38.50 | 41.22 | 47.09 | 52.47 | 60.67 | 67.56 | 63.85 | 57.20 | 50.83 | 43.33 | 33.00 | 45.26 | |||||||||||||
| MIN | 20.79 | 20.54 | 34.92 | 40.98 | 45.50 | 53.45 | 55.90 | 58.82 | 53.59 | 43.76 | 27.72 | 20.35 | 43.05 | |||||||||||||
| NO YRS | 9 | 8 | 9 | 7 | 5 | 7 | 7 | 7 | 6 | 4 | 9 | 9 | 2 | |||||||||||||