| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.66 | 28.66 | ||
| 1994 | 30.63 | a | 26.46 | a | 37.35 | ----- | z | 47.31 | 58.73 | 63.92 | 63.71 | 52.58 | 41.44 | 25.97 | 27.52 | 43.24 | ||||||||||
| 1995 | 25.16 | 33.86 | 29.98 | 34.60 | 41.08 | 49.82 | 58.34 | 60.45 | 56.07 | 47.87 | 43.55 | 30.50 | 42.61 | |||||||||||||
| 1996 | 32.73 | 30.71 | 32.66 | 39.60 | 47.52 | 56.02 | 63.48 | 62.13 | 53.12 | 42.63 | 34.64 | a | 31.03 | 43.85 | ||||||||||||
| 1997 | 27.98 | 28.89 | 38.69 | 39.08 | 51.08 | 54.17 | 59.47 | 61.56 | ----- | z | 43.34 | 35.98 | 22.37 | 42.06 | ||||||||||||
| 1998 | 29.10 | 23.54 | 31.35 | 32.27 | 38.79 | 49.95 | 60.97 | 61.89 | ----- | z | ----- | z | 34.55 | 27.47 | 38.99 | |||||||||||
| 1999 | 30.93 | a | 25.14 | c | 33.55 | 32.97 | 46.68 | 53.12 | 60.34 | b | 57.28 | a | 54.60 | 47.45 | a | 38.72 | a | 31.92 | a | 42.73 | ||||||
| 2000 | 31.05 | a | 28.88 | 32.17 | a | 41.65 | 49.95 | 57.22 | ----- | z | 60.23 | a | 52.45 | 41.98 | 30.26 | a | 34.72 | a | 41.87 | |||||||
| 2001 | 24.27 | 23.59 | a | ----- | z | 34.72 | a | 52.95 | 58.07 | 59.56 | 63.48 | 56.10 | 48.56 | 35.32 | b | 26.59 | b | 43.93 | ||||||||
| 2002 | 25.60 | a | 31.28 | a | 29.53 | 39.78 | 45.63 | 57.58 | 63.71 | 60.21 | 53.73 | 42.26 | 36.63 | 26.10 | 42.67 | |||||||||||
| 2003 | 34.32 | 27.33 | a | 34.79 | 33.18 | 46.26 | 56.35 | 63.29 | 60.56 | 57.02 | 50.55 | 29.68 | 26.69 | 43.34 | ||||||||||||
| 2004 | 26.45 | 24.14 | 38.00 | 40.28 | 47.06 | 56.07 | 62.03 | 60.40 | 53.73 | 39.48 | 30.53 | 29.33 | a | 42.29 | ||||||||||||
| 2005 | 25.71 | b | 27.57 | 31.31 | 34.45 | 45.76 | 50.95 | 64.60 | 60.19 | 49.68 | 44.48 | e | 39.12 | a | 30.56 | e | 42.03 | |||||||||
| 2006 | 26.40 | 27.82 | 24.03 | 34.60 | 47.11 | 56.87 | 63.77 | 58.50 | 53.43 | 42.13 | 40.77 | h | 30.03 | a | 42.25 | |||||||||||
| 2007 | 23.62 | a | 30.02 | 36.89 | 40.93 | 49.10 | 57.88 | 65.63 | 64.11 | 52.20 | 43.21 | 38.72 | c | 25.86 | b | 44.01 | ||||||||||
| 2008 | 23.57 | b | 26.43 | b | 33.92 | a | 39.50 | 45.69 | 56.45 | 64.60 | 65.66 | l | 55.13 | 44.42 | a | 38.14 | a | 28.60 | a | 41.49 | ||||||
| 2009 | 30.02 | 26.73 | 31.18 | 37.97 | 51.55 | 50.93 | 63.32 | 59.94 | 57.58 | 41.27 | 36.93 | 25.25 | a | 42.72 | ||||||||||||
| 2010 | 26.68 | a | 27.86 | 29.76 | 32.40 | 40.63 | 55.40 | 61.37 | 59.37 | 56.12 | 44.95 | 33.45 | a | 30.55 | 41.54 | |||||||||||
| 2011 | 28.63 | l | 22.98 | e | 30.83 | e | 37.23 | d | 41.31 | b | 52.53 | 60.98 | a | 61.93 | c | 55.79 | b | 46.44 | 33.39 | g | 28.35 | a | 43.84 | |||
| 2012 | 35.30 | a | 29.17 | b | 35.23 | 41.08 | 49.85 | 57.40 | a | 62.69 | b | 63.95 | c | 59.06 | f | 48.26 | 38.33 | 26.79 | 44.37 | |||||||
| 2013 | 24.97 | 29.50 | 38.84 | 36.00 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 10.00 | z | 31.10 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 28.13 | 27.59 | 33.16 | 37.02 | 46.60 | 55.03 | 62.34 | 61.11 | 54.33 | 44.48 | 35.33 | 28.44 | 42.78 | |||||||||||||
| S.D. | 3.60 | 2.84 | 3.81 | 3.33 | 3.89 | 2.93 | 2.05 | 1.90 | 2.09 | 3.06 | 4.33 | 2.76 | 0.77 | |||||||||||||
| SKEW | 0.52 | 0.16 | -0.32 | -0.10 | -0.43 | -0.62 | -0.36 | -0.01 | -0.39 | 0.38 | -0.40 | 0.09 | 0.16 | |||||||||||||
| MAX | 35.30 | 33.86 | 38.84 | 41.65 | 52.95 | 58.73 | 65.63 | 64.11 | 57.58 | 50.55 | 43.55 | 34.72 | 44.01 | |||||||||||||
| MIN | 23.57 | 22.98 | 24.03 | 32.27 | 38.79 | 49.82 | 58.34 | 57.28 | 49.68 | 39.48 | 25.97 | 22.37 | 41.54 | |||||||||||||
| NO YRS | 19 | 20 | 19 | 18 | 19 | 19 | 18 | 18 | 16 | 18 | 17 | 20 | 10 | |||||||||||||