| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1990 | ----- | z | ----- | z | 61.00 | 72.90 | 72.00 | 84.00 | 95.32 | 91.65 | 89.27 | 66.52 | 53.40 | 35.60 | k | 76.23 | ||||||||||
| 1991 | 33.89 | m | 49.57 | 55.41 | i | 63.33 | 68.10 | 78.67 | 94.06 | 94.10 | 84.22 | l | 69.61 | 45.65 | j | 40.68 | i | 73.92 | ||||||||
| 1992 | 39.74 | 52.66 | 65.42 | 71.27 | 82.52 | 86.10 | 87.87 | 93.26 | 80.23 | 69.84 | 45.70 | j | 40.40 | k | 72.89 | |||||||||||
| 1993 | 33.36 | i | 37.19 | a | 49.71 | 62.37 | 78.58 | 75.97 | 81.23 | 86.17 | a | 82.37 | ----- | z | 47.00 | 44.35 | 64.49 | |||||||||
| 1994 | 38.86 | j | 43.71 | 63.61 | ----- | z | 76.94 | 85.13 | 96.29 | 95.61 | 88.13 | 67.16 | 45.43 | 36.73 | i | 73.56 | ||||||||||
| 1995 | 45.29 | j | 55.71 | 57.68 | 64.83 | 72.81 | 81.33 | o | 92.13 | 90.71 | 85.10 | 66.95 | k | 53.93 | 41.32 | l | 71.61 | |||||||||
| 1996 | 43.39 | 46.48 | 57.68 | 66.07 | 71.26 | 83.24 | i | 86.84 | l | 93.90 | k | 79.59 | a | 68.90 | 54.75 | j | 45.50 | k | 61.91 | |||||||
| 1997 | 40.40 | k | 49.75 | 60.32 | 63.23 | 80.06 | 84.37 | 90.52 | j | 93.41 | i | 83.48 | i | 68.55 | 56.00 | j | 41.29 | j | 67.71 | |||||||
| 1998 | 45.37 | l | 50.86 | 57.55 | 62.70 | 70.61 | m | 79.50 | 98.52 | 98.65 | k | 86.70 | 69.19 | 55.53 | k | 41.32 | i | 72.15 | ||||||||
| 1999 | 44.35 | k | 44.22 | j | 58.19 | 61.97 | 73.84 | 83.27 | 94.16 | 95.27 | i | 84.52 | a | 72.71 | n | 61.17 | r | ----- | z | 75.99 | ||||||
| 2000 | 45.43 | q | 51.66 | 57.10 | 71.30 | 76.23 | a | 85.67 | 95.42 | 96.42 | 80.16 | k | 65.27 | a | 43.50 | j | 37.61 | m | 74.88 | |||||||
| 2001 | 36.25 | k | 41.46 | 60.52 | 63.67 | i | 78.73 | i | 83.77 | 93.14 | i | 97.84 | 87.29 | i | 69.16 | 55.93 | 41.83 | m | 68.11 | |||||||
| 2002 | 40.38 | j | 46.06 | j | 54.32 | 66.43 | 74.04 | e | 86.44 | e | 96.77 | i | 88.58 | l | 79.62 | i | 65.16 | f | 54.00 | j | 46.05 | j | 70.31 | |||
| 2003 | 43.89 | l | 49.76 | k | 61.80 | k | 65.28 | e | 73.52 | j | 87.83 | g | 101.58 | g | 96.95 | i | 84.71 | i | 74.40 | f | 51.19 | i | 47.05 | k | 65.28 | |
| 2004 | 33.11 | l | 45.05 | j | 65.57 | h | 70.05 | h | 74.40 | k | 88.23 | h | 97.55 | k | 92.95 | l | 81.85 | j | 71.05 | k | 48.68 | k | 43.06 | m | 9999.00 | |
| 2005 | 39.50 | m | 50.47 | i | 61.26 | h | 65.36 | h | 73.83 | h | 81.52 | i | 99.00 | l | 94.68 | i | 83.57 | p | 68.57 | j | 47.60 | j | 35.00 | n | 9999.00 | |
| 2006 | 45.47 | l | 47.44 | j | 55.27 | i | 65.63 | k | 78.76 | j | 87.57 | i | 101.22 | m | 93.25 | k | 81.69 | q | 66.95 | l | 56.12 | m | 40.15 | r | 9999.00 | |
| 2007 | 42.59 | i | 52.21 | i | 62.52 | j | 66.05 | i | 82.80 | k | 89.92 | r | 99.35 | n | 93.86 | i | 79.25 | r | 66.43 | j | 56.71 | m | 44.88 | o | 9999.00 | |
| 2008 | 38.18 | n | 51.93 | o | 56.27 | i | 62.87 | g | 75.76 | j | 84.82 | m | 97.61 | m | 97.95 | l | 85.41 | m | 69.48 | j | 54.82 | m | 45.20 | k | 9999.00 | |
| 2009 | 41.16 | l | 47.78 | e | 53.71 | 66.20 | 74.16 | l | 80.90 | 91.61 | 90.81 | 86.03 | 58.87 | 50.60 | 32.35 | 65.89 | ||||||||||
| 2010 | 41.71 | 45.00 | 56.52 | 62.00 | 65.61 | 78.47 | 90.84 | 88.06 | 80.37 | 68.00 | 48.53 | 37.68 | 63.57 | |||||||||||||
| 2011 | 35.35 | 43.89 | 52.03 | 57.80 | 66.39 | 76.90 | 89.71 | 93.10 | 84.57 | 65.71 | 49.13 | 41.19 | 62.98 | |||||||||||||
| 2012 | 42.39 | 48.07 | 57.23 | 67.60 | 72.42 | 81.48 | a | 95.35 | 93.45 | 82.33 | 64.45 | 51.33 | 43.39 | 66.62 | ||||||||||||
| 2013 | 24.55 | 44.93 | 57.45 | 72.50 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.31 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 37.85 | 47.25 | 57.65 | 65.33 | 73.63 | 82.04 | 92.50 | 92.60 | 84.10 | 67.02 | 50.59 | 39.79 | 64.39 | |||||||||||||
| S.D. | 7.11 | 4.75 | 3.92 | 3.99 | 4.97 | 3.46 | 4.48 | 3.36 | 3.17 | 3.01 | 3.43 | 4.89 | 1.96 | |||||||||||||
| SKEW | -1.25 | -0.27 | -0.02 | 0.33 | 0.04 | -0.36 | -1.17 | -0.35 | 0.05 | -1.56 | 0.06 | -0.66 | 0.61 | |||||||||||||
| MAX | 43.39 | 55.71 | 65.42 | 72.90 | 82.52 | 86.44 | 98.52 | 97.84 | 89.27 | 69.84 | 55.93 | 44.35 | 66.62 | |||||||||||||
| MIN | 24.55 | 37.19 | 49.71 | 57.80 | 65.61 | 75.97 | 81.23 | 86.17 | 79.59 | 58.87 | 45.43 | 32.35 | 62.98 | |||||||||||||
| NO YRS | 6 | 15 | 17 | 16 | 14 | 15 | 13 | 12 | 12 | 13 | 9 | 5 | 3 | |||||||||||||