| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1980 | ----- | z | ----- | z | ----- | z | ----- | z | 50.84 | 54.13 | 65.73 | 61.03 | 55.58 | 44.47 | 35.77 | 29.00 | 49.57 | |||||||||
| 1981 | 30.11 | 29.20 | 37.53 | 44.60 | 49.11 | 56.57 | 64.15 | 66.50 | 55.52 | 42.29 | 35.57 | 29.05 | 45.02 | |||||||||||||
| 1982 | 18.27 | 24.68 | 35.27 | 39.03 | 49.10 | 57.75 | 64.84 | 64.29 | 52.92 | 43.48 | 29.02 | 22.77 | 41.79 | |||||||||||||
| 1983 | 28.73 | 33.32 | 39.13 | 40.82 | 51.55 | 54.98 | 61.08 | 64.61 | 53.83 | 47.19 | 35.62 | 22.19 | 44.42 | |||||||||||||
| 1984 | 16.98 | 23.09 | 35.82 | 40.70 | 49.92 | 54.43 | 66.95 | 64.90 | 52.70 | 39.69 | 33.60 | 18.95 | 41.48 | |||||||||||||
| 1985 | 16.81 | 22.95 | 31.31 | 46.27 | 51.05 | 59.08 | 70.69 | 61.37 | 48.90 | 41.71 | 20.92 | 11.90 | 40.25 | |||||||||||||
| 1986 | 27.39 | 33.54 | 42.24 | 42.57 | 51.74 | 63.13 | 61.58 | 69.23 | 50.80 | 46.85 | 36.30 | 26.68 | 46.00 | |||||||||||||
| 1987 | 19.76 | 32.62 | 38.76 | 48.93 | 54.11 | 61.02 | 63.19 | 65.13 | 60.50 | ----- | z | ----- | z | ----- | z | 49.34 | ||||||||||
| 1988 | ----- | z | 32.57 | 37.47 | 45.03 | 51.13 | 60.62 | 68.69 | 64.50 | 55.60 | 52.95 | 33.03 | 22.02 | 47.60 | ||||||||||||
| 1989 | 19.22 | a | 18.52 | 38.06 | 47.42 | 49.68 | 60.17 | 65.87 | 61.76 | 56.10 | 44.65 | 33.07 | 27.13 | 43.47 | ||||||||||||
| 1990 | 30.02 | 27.12 | 38.52 | ----- | z | 48.61 | 59.08 | 69.58 | 65.68 | 61.35 | 42.90 | 33.92 | 16.87 | 44.88 | ||||||||||||
| 1991 | 25.63 | 37.25 | 35.58 | 40.30 | 47.74 | 54.42 | 68.35 | 66.98 | 59.15 | 44.98 | 35.50 | 28.76 | 45.39 | |||||||||||||
| 1992 | 27.71 | 37.10 | 41.81 | 46.57 | 57.24 | 62.40 | 64.65 | 66.03 | 55.90 | 47.40 | 30.08 | 19.77 | 46.39 | |||||||||||||
| 1993 | 14.81 | 18.38 | 33.37 | 41.70 | 54.34 | 54.37 | 56.66 | 60.31 | 56.30 | 46.55 | 27.18 | 28.52 | 41.04 | |||||||||||||
| 1994 | 31.84 | 29.02 | 39.71 | 44.43 | 53.39 | 58.57 | 69.92 | 66.18 | 58.62 | 43.21 | 26.07 | 22.77 | 45.31 | |||||||||||||
| 1995 | ----- | z | ----- | z | 37.79 | 41.45 | 51.48 | e | ----- | z | 64.48 | f | 60.44 | 56.35 | 41.34 | 38.53 | 28.37 | 44.47 | ||||||||
| 1996 | 26.85 | 29.74 | d | 38.95 | 42.37 | d | 48.39 | 57.92 | 68.77 | c | 64.56 | 52.78 | 44.42 | a | 35.87 | 29.65 | 45.02 | |||||||||
| 1997 | 27.52 | 31.62 | 39.00 | 41.75 | 54.74 | 57.33 | 64.02 | 64.65 | 56.78 | 43.31 | 36.28 | 24.56 | 45.13 | |||||||||||||
| 1998 | 31.53 | 29.64 | 37.82 | 42.88 | 48.08 | 55.82 | 68.90 | 66.82 | 60.08 | 42.42 | 34.87 | 22.85 | 45.14 | |||||||||||||
| 1999 | 28.00 | 25.86 | 33.95 | 40.97 | 48.23 | 57.18 | 62.50 | 63.50 | 54.23 | 45.15 | 39.28 | 26.39 | 43.77 | |||||||||||||
| 2000 | 27.21 | 34.91 | 36.87 | 47.40 | 51.52 | 59.77 | 65.76 | 65.29 | 54.27 | 44.44 | 28.62 | 24.18 | 45.02 | |||||||||||||
| 2001 | 19.71 | 23.98 | 38.18 | 39.88 | 53.45 | 56.95 | 65.18 | 68.31 | 58.37 | 45.40 | 34.33 | 22.48 | 43.85 | |||||||||||||
| 2002 | 22.90 | 23.73 | 33.31 | 43.55 | 49.87 | 60.50 | 70.11 | 61.29 | 55.60 | 40.98 | 34.28 | 29.68 | 43.82 | |||||||||||||
| 2003 | 33.13 | 30.82 | 40.02 | 40.08 | 51.58 | 60.72 | 71.42 | 66.29 | 58.47 | 48.92 | 31.10 | 30.16 | 46.89 | |||||||||||||
| 2004 | 22.55 | 23.60 | 40.26 | 46.50 | 50.34 | 60.32 | 68.31 | 66.23 | 54.25 | 45.69 | 34.95 | 30.39 | 45.28 | |||||||||||||
| 2005 | 23.24 | 29.82 | 40.31 | 43.47 | 52.90 | 55.33 | 68.24 | 66.89 | 54.48 | 45.92 | 34.13 | 21.76 | 44.71 | |||||||||||||
| 2006 | 26.44 | 25.71 | 34.74 | 44.58 | 54.50 | 62.50 | 72.52 | 64.55 | 56.87 | 44.05 | 35.67 | 25.34 | 45.62 | |||||||||||||
| 2007 | 24.27 | 32.79 | 40.97 | 43.03 | 52.89 | 59.72 | 72.15 | 65.27 | 54.25 | 42.45 | 34.35 | 20.37 | 45.21 | |||||||||||||
| 2008 | 16.81 | 24.31 | 31.69 | 37.83 | 51.50 | 57.47 | 67.61 | 65.24 | 56.50 | 45.58 | 37.63 | 22.50 | 42.89 | |||||||||||||
| 2009 | 28.35 | 28.50 | 35.53 | 41.28 | 53.27 | 58.82 | 68.40 | 65.03 | 59.78 | 41.15 | 31.78 | 20.37 | 44.36 | |||||||||||||
| 2010 | 30.52 | 31.98 | 36.85 | 40.52 | 46.19 | 57.43 | 65.69 | 62.76 | 56.47 | 49.11 | 31.33 | 23.77 | 44.39 | |||||||||||||
| 2011 | 20.00 | 24.55 | 34.79 | 39.13 | k | 46.66 | 54.92 | 64.32 | a | 66.19 | 61.00 | 44.35 | a | 31.38 | 24.98 | a | 43.01 | |||||||||
| 2012 | 28.05 | 32.02 | 38.40 | 45.26 | a | 50.74 | 56.47 | 69.90 | 67.83 | a | 60.03 | 46.19 | 37.64 | a | 27.56 | 46.68 | ||||||||||
| 2013 | 16.68 | 31.93 | 38.95 | 51.25 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.19 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 24.55 | 28.59 | 37.36 | 43.04 | 51.09 | 58.12 | 66.74 | 64.84 | 56.19 | 44.66 | 33.36 | 24.43 | 44.38 | |||||||||||||
| S.D. | 5.32 | 4.89 | 2.76 | 2.78 | 2.53 | 2.58 | 3.54 | 2.25 | 2.95 | 2.73 | 3.89 | 4.31 | 1.68 | |||||||||||||
| SKEW | -0.28 | -0.26 | -0.42 | 0.28 | 0.17 | 0.12 | -0.64 | -0.47 | -0.19 | 0.76 | -1.21 | -0.70 | -0.90 | |||||||||||||
| MAX | 33.13 | 37.25 | 42.24 | 48.93 | 57.24 | 63.13 | 72.52 | 69.23 | 61.35 | 52.95 | 39.28 | 30.39 | 46.89 | |||||||||||||
| MIN | 14.81 | 18.38 | 31.31 | 37.83 | 46.19 | 54.13 | 56.66 | 60.31 | 48.90 | 39.69 | 20.92 | 11.90 | 40.25 | |||||||||||||
| NO YRS | 31 | 32 | 33 | 30 | 33 | 32 | 32 | 33 | 33 | 32 | 32 | 32 | 27 | |||||||||||||