| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1990 | ----- | z | ----- | z | 45.00 | 57.18 | 57.16 | 67.25 | 78.16 | 74.31 | 68.83 | 49.89 | 40.28 | 25.08 | k | 59.79 | ||||||||||
| 1991 | 23.67 | m | 38.29 | 39.95 | l | 48.18 | 54.76 | 62.32 | 74.19 | 73.98 | 64.03 | l | 51.44 | 35.75 | j | 30.11 | i | 57.59 | ||||||||
| 1992 | 30.98 | 40.62 | i | 47.65 | 53.93 | 63.42 | 69.63 | 70.48 | 71.98 | 60.93 | 51.71 | 36.47 | j | 29.90 | p | 57.86 | ||||||||||
| 1993 | 23.79 | n | 28.80 | a | 40.16 | 49.45 | 62.13 | 61.33 | 65.03 | 67.42 | a | 61.22 | ----- | z | 31.12 | 33.34 | i | 51.85 | ||||||||
| 1994 | 32.50 | j | 32.27 | 46.15 | ----- | z | 60.97 | 66.85 | 75.90 | 74.18 | 65.63 | 50.26 | 34.48 | i | 27.27 | i | 59.03 | |||||||||
| 1995 | 34.98 | j | 41.54 | 43.66 | i | 49.21 | a | 57.90 | 65.54 | p | 73.21 | 68.68 | 63.95 | 48.65 | k | 41.95 | b | 30.32 | n | 56.63 | ||||||
| 1996 | 33.86 | j | 33.31 | k | 44.02 | 50.08 | 56.58 | 65.45 | i | 67.97 | l | 71.16 | l | 59.48 | a | 50.53 | 41.03 | j | 34.78 | k | 52.14 | |||||
| 1997 | 29.70 | k | 36.38 | 43.90 | 47.95 | 61.19 | 66.12 | 70.48 | j | 71.09 | i | 64.07 | i | 49.31 | 41.56 | l | 31.26 | l | 50.81 | |||||||
| 1998 | 36.18 | l | 39.46 | 43.05 | 48.57 | 57.69 | m | 62.65 | 77.77 | i | 73.75 | k | 65.20 | 47.90 | 39.61 | k | 27.67 | j | 51.14 | |||||||
| 1999 | 31.83 | k | 32.28 | j | 40.22 | f | 44.10 | f | 54.90 | f | 63.02 | g | 70.90 | f | 70.86 | i | 57.59 | h | 47.62 | n | 41.85 | t | ----- | z | 9999.00 | |
| 2000 | 31.25 | q | 35.92 | i | 42.50 | h | 54.46 | g | 60.24 | h | 67.08 | f | 74.98 | g | 73.44 | f | 59.24 | k | 48.57 | h | 31.88 | j | 29.22 | m | 9999.00 | |
| 2001 | 25.62 | k | 28.90 | h | 43.87 | a | 47.19 | i | 59.11 | i | 64.59 | h | 72.43 | i | 73.56 | g | 63.36 | i | 48.15 | d | 41.98 | h | 32.94 | n | 46.01 | |
| 2002 | 31.40 | j | 31.19 | j | 39.60 | 50.12 | 58.75 | e | 69.22 | e | 76.23 | i | 68.55 | l | 59.14 | i | 48.42 | f | 36.62 | j | 35.42 | k | 54.42 | |||
| 2003 | 35.84 | l | 35.91 | k | 45.95 | k | 50.80 | e | 56.81 | j | 70.50 | g | 81.50 | g | 76.05 | i | 62.98 | i | 54.58 | f | 35.17 | i | 34.58 | m | 50.80 | |
| 2004 | 25.74 | l | 34.47 | j | 47.00 | h | 52.23 | h | 58.25 | k | 68.36 | h | 75.60 | k | 72.47 | m | 61.40 | j | 51.90 | k | 36.45 | k | 31.14 | m | 9999.00 | |
| 2005 | 29.28 | m | 32.45 | i | 44.28 | h | 49.66 | h | 58.48 | i | 63.60 | i | 75.92 | l | 72.30 | i | 59.46 | p | 49.33 | j | 34.30 | j | 24.24 | n | 9999.00 | |
| 2006 | 34.37 | l | 31.47 | j | 41.16 | i | 48.47 | k | 58.50 | j | 67.64 | i | 77.03 | m | 68.90 | k | 57.88 | q | 47.21 | l | 40.74 | m | 26.08 | r | 9999.00 | |
| 2007 | 27.41 | i | 38.11 | i | 44.71 | j | 48.48 | i | 63.35 | k | 70.88 | r | 80.68 | n | 72.73 | i | 60.46 | r | 50.14 | j | 40.44 | m | 34.38 | o | 9999.00 | |
| 2008 | 27.79 | n | 37.32 | o | 41.05 | i | 44.85 | g | 59.12 | j | 66.59 | m | 76.47 | m | 75.50 | l | 62.85 | m | 51.02 | j | 42.32 | m | 31.92 | k | 9999.00 | |
| 2009 | 31.87 | l | 35.76 | e | 39.09 | d | 49.78 | 57.71 | l | 67.77 | 72.40 | 72.73 | 65.62 | 46.11 | 37.90 | 24.23 | 51.14 | |||||||||
| 2010 | 35.00 | 37.12 | 43.52 | 47.95 | 53.69 | 65.00 | 72.73 | 70.66 | 62.10 | 53.82 | 38.05 | 30.69 | 50.86 | |||||||||||||
| 2011 | 28.19 | 34.14 | 42.69 | 45.62 | 53.45 | 62.72 | 72.06 | 74.18 | 65.98 | 51.97 | 38.50 | 27.98 | 49.79 | |||||||||||||
| 2012 | 32.31 | 36.36 | 44.74 | 52.35 | 57.94 | 65.71 | a | 77.76 | 73.97 | 63.37 | 48.60 | 40.98 | 35.06 | 52.43 | ||||||||||||
| 2013 | 15.74 | 35.68 | 43.19 | 54.00 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.54 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 28.45 | 35.98 | 43.33 | 50.08 | 58.16 | 65.55 | 73.19 | 72.21 | 63.85 | 49.97 | 38.40 | 29.49 | 51.03 | |||||||||||||
| S.D. | 7.51 | 3.45 | 2.40 | 2.87 | 3.28 | 2.78 | 3.80 | 2.51 | 2.74 | 2.12 | 3.56 | 4.56 | 1.33 | |||||||||||||
| SKEW | -1.12 | -0.51 | -0.29 | 1.04 | 0.06 | -0.09 | -0.70 | -0.89 | 0.08 | -0.02 | -1.26 | 0.10 | 0.25 | |||||||||||||
| MAX | 35.00 | 41.54 | 47.65 | 57.18 | 63.42 | 69.63 | 78.16 | 74.31 | 68.83 | 53.82 | 41.95 | 35.06 | 52.43 | |||||||||||||
| MIN | 15.74 | 28.80 | 39.09 | 45.62 | 53.45 | 61.33 | 65.03 | 67.42 | 59.48 | 46.11 | 31.12 | 24.23 | 49.79 | |||||||||||||
| NO YRS | 5 | 11 | 14 | 14 | 12 | 12 | 10 | 10 | 11 | 12 | 7 | 4 | 3 | |||||||||||||