| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1978 | ----- | z | ----- | z | 54.00 | 48.47 | 56.68 | 69.97 | 78.23 | 74.45 | 62.20 | 67.00 | 44.73 | 35.61 | 59.13 | |||||||||||
| 1979 | 38.71 | 37.00 | 50.42 | 49.27 | ----- | z | 73.33 | 80.42 | 74.71 | 75.38 | a | 61.58 | 45.90 | 44.10 | 57.35 | |||||||||||
| 1980 | 39.94 | 45.31 | 44.06 | 54.10 | 58.81 | 63.40 | 80.13 | 76.68 | 72.47 | 62.90 | 47.37 | 45.77 | 57.58 | |||||||||||||
| 1981 | 48.84 | 45.36 | 47.84 | 52.47 | 58.55 | 67.33 | 78.13 | 84.52 | 74.20 | 55.68 | 46.57 | 38.32 | 58.15 | |||||||||||||
| 1982 | 36.29 | 40.89 | 44.90 | 48.57 | 62.29 | 69.30 | 76.81 | 78.48 | 66.27 | 56.23 | 42.63 | 38.39 | 55.09 | |||||||||||||
| 1983 | 41.77 | 41.18 | 43.19 | 48.43 | 63.58 | 65.63 | 71.16 | 77.52 | 69.17 | 61.52 | 41.20 | 34.81 | 54.93 | |||||||||||||
| 1984 | 43.42 | 45.14 | 47.32 | 46.00 | 57.97 | 66.17 | 83.90 | 81.52 | 70.30 | 50.29 | 39.07 | 35.90 | 55.58 | |||||||||||||
| 1985 | 46.19 | 41.82 | 45.16 | 56.80 | 62.26 | 74.20 | 86.52 | 77.77 | 62.24 | a | 57.19 | 37.87 | 46.29 | 57.86 | ||||||||||||
| 1986 | 43.74 | 42.61 | 52.26 | 52.83 | 61.65 | 77.27 | 75.71 | 87.58 | 62.47 | 62.90 | 45.10 | 43.00 | 58.93 | |||||||||||||
| 1987 | 39.16 | 44.43 | 46.81 | 63.40 | 66.10 | 76.47 | 75.52 | 82.71 | 79.43 | 75.13 | 47.72 | a | 37.45 | 61.19 | ||||||||||||
| 1988 | 39.74 | 50.41 | 48.87 | 56.57 | 59.06 | 69.53 | 84.00 | 84.42 | 76.97 | 73.65 | 41.20 | 42.03 | 60.54 | |||||||||||||
| 1989 | 39.71 | 37.71 | 44.55 | 57.57 | 60.77 | 74.50 | 76.68 | 75.29 | 71.97 | 58.39 | 49.60 | 49.13 | 57.99 | |||||||||||||
| 1990 | 39.65 | 40.32 | 50.71 | 60.50 | 60.58 | 69.00 | 82.03 | 79.52 | 76.17 | 58.42 | 43.40 | 33.00 | 57.77 | |||||||||||||
| 1991 | 42.58 | 51.71 | 43.97 | 47.90 | 56.97 | 67.83 | 82.94 | 81.71 | 81.07 | 68.68 | 45.80 | 41.16 | 59.36 | |||||||||||||
| 1992 | 43.00 | 50.14 | 57.45 | 58.10 | 74.32 | 75.83 | 74.77 | 83.26 | 73.21 | p | 64.03 | 44.80 | 35.58 | 60.12 | ||||||||||||
| 1993 | 33.81 | 40.32 | 48.00 | 47.90 | 63.71 | 66.57 | 71.45 | 75.06 | 77.07 | 63.97 | 47.23 | 42.71 | 56.48 | |||||||||||||
| 1994 | 44.45 | 40.86 | 53.58 | 56.07 | 64.58 | 69.90 | 85.16 | 81.39 | 76.33 | 58.65 | 37.20 | 38.94 | 58.92 | |||||||||||||
| 1995 | 41.61 | 50.18 | 46.06 | 50.43 | 62.16 | 67.47 | 77.32 | 75.13 | 75.63 | 60.10 | 50.80 | 40.71 | 58.13 | |||||||||||||
| 1996 | 39.71 | 43.90 | 49.87 | 52.43 | 58.94 | 72.63 | 84.45 | 83.74 | 69.07 | 57.00 | 47.03 | 38.06 | 58.07 | |||||||||||||
| 1997 | 39.61 | 42.75 | 47.03 | 50.53 | 68.16 | 69.10 | 77.81 | 79.77 | 69.20 | 54.61 | 47.80 | 40.42 | 57.23 | |||||||||||||
| 1998 | 40.26 | 40.82 | 46.45 | 51.63 | 53.10 | 71.37 | 84.23 | 84.35 | 77.30 | 57.10 | 40.87 | 36.29 | 56.98 | |||||||||||||
| 1999 | 40.45 | 36.68 | 43.29 | 49.83 | 56.03 | 67.97 | 79.61 | 75.61 | 74.37 | 64.52 | 49.57 | 41.68 | 56.63 | |||||||||||||
| 2000 | 37.39 | 42.34 | 45.26 | 57.23 | 59.10 | 72.90 | 76.71 | 80.52 | 70.93 | 58.23 | 43.47 | 41.19 | 57.11 | |||||||||||||
| 2001 | 42.81 | 42.14 | 49.52 | 48.50 | 68.52 | 67.60 | 76.94 | 80.32 | 75.20 | 62.13 | 47.70 | 37.06 | 58.20 | |||||||||||||
| 2002 | 36.94 | 42.71 | 44.19 | 53.57 | 60.42 | 72.37 | 82.45 | 78.45 | 74.10 | 60.32 | 50.37 | 39.65 | 57.96 | |||||||||||||
| 2003 | 43.81 | 43.71 | 45.13 | 46.73 | 61.13 | 70.80 | 85.16 | 81.29 | 76.20 | 63.06 | 41.60 | 38.23 | 58.07 | |||||||||||||
| 2004 | 39.16 | 41.38 | 53.19 | 57.10 | 61.03 | 70.90 | 81.26 | 78.61 | 66.80 | 56.74 | 47.83 | 40.45 | 57.87 | |||||||||||||
| 2005 | 41.52 | 48.00 | 51.00 | 48.80 | 58.55 | 63.93 | 81.06 | 81.94 | 69.40 | 58.29 | 42.37 | 38.84 | 56.97 | |||||||||||||
| 2006 | 36.48 | 41.43 | 40.16 | 50.37 | 63.13 | 71.40 | 82.52 | 78.45 | 73.89 | l | 60.06 | 40.07 | 38.32 | 54.76 | ||||||||||||
| 2007 | 39.26 | 40.71 | 49.94 | 51.13 | 63.81 | 69.43 | 79.58 | 76.74 | 69.13 | 53.61 | 49.57 | 35.45 | 56.53 | |||||||||||||
| 2008 | 35.26 | 39.79 | 42.55 | 47.07 | 62.10 | 67.40 | 79.81 | 80.36 | f | 75.57 | 62.61 | 50.70 | 39.81 | 54.79 | ||||||||||||
| 2009 | 40.81 | 46.14 | 43.32 | 52.30 | 66.94 | 68.29 | f | 86.59 | i | 81.48 | 79.50 | 55.19 | 43.30 | 37.77 | 54.68 | |||||||||||
| 2010 | 42.29 | 45.00 | 49.23 | 49.17 | 54.13 | 66.87 | 83.26 | 80.87 | 71.03 | 61.10 | 50.93 | o | 37.58 | 58.23 | ||||||||||||
| 2011 | 42.87 | 41.57 | 41.23 | 45.57 | 54.42 | 66.67 | 77.16 | 82.71 | 79.90 | 60.81 | 44.00 | 46.39 | 56.94 | |||||||||||||
| 2012 | 42.94 | 42.79 | 42.65 | 53.63 | 63.26 | 66.77 | 80.55 | 85.97 | 82.10 | 62.97 | 47.03 | 36.65 | 58.94 | |||||||||||||
| 2013 | 39.90 | 42.68 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.29 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 40.69 | 43.14 | 47.23 | 52.03 | 61.26 | 69.76 | 79.81 | 80.07 | 73.00 | 60.70 | 45.04 | 39.62 | 57.72 | |||||||||||||
| S.D. | 3.08 | 3.64 | 4.02 | 4.36 | 4.42 | 3.47 | 3.84 | 3.47 | 5.32 | 5.14 | 3.74 | 3.66 | 1.41 | |||||||||||||
| SKEW | 0.14 | 0.66 | 0.48 | 0.67 | 0.59 | 0.39 | -0.33 | 0.09 | -0.42 | 0.83 | -0.32 | 0.68 | 0.28 | |||||||||||||
| MAX | 48.84 | 51.71 | 57.45 | 63.40 | 74.32 | 77.27 | 86.52 | 87.58 | 82.10 | 75.13 | 50.80 | 49.13 | 61.19 | |||||||||||||
| MIN | 33.81 | 36.68 | 40.16 | 45.57 | 53.10 | 63.40 | 71.16 | 74.45 | 62.20 | 50.29 | 37.20 | 33.00 | 54.93 | |||||||||||||
| NO YRS | 35 | 35 | 35 | 35 | 34 | 34 | 34 | 34 | 33 | 35 | 34 | 35 | 28 | |||||||||||||