| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1989 | ----- | z | ----- | z | ----- | z | ----- | z | 52.87 | 62.67 | 69.11 | v | 64.62 | w | 60.65 | 48.92 | 40.53 | 31.66 | 49.55 | |||||||
| 1990 | 34.29 | 32.82 | 41.65 | 52.10 | 54.40 | 60.50 | 70.23 | 69.39 | 67.42 | 46.55 | 39.67 | 21.90 | a | 49.24 | ||||||||||||
| 1991 | 25.68 | 39.88 | 38.87 | 46.53 | 51.94 | 57.62 | 67.53 | 72.11 | 62.22 | 49.29 | 35.93 | 32.73 | 48.36 | |||||||||||||
| 1992 | 31.98 | 40.71 | 47.11 | 50.33 | 58.26 | 65.82 | 66.21 | 69.66 | 58.97 | 49.69 | 35.20 | 27.32 | 50.11 | |||||||||||||
| 1993 | 24.44 | 27.84 | 43.10 | 46.00 | 59.25 | a | 59.72 | ----- | z | 62.18 | c | 58.67 | 51.29 | 31.24 | a | 32.81 | 45.14 | |||||||||
| 1994 | 36.18 | 32.02 | 42.34 | 49.58 | 56.69 | 58.54 | p | 70.66 | 71.60 | 64.07 | 48.97 | 33.42 | 28.81 | 48.58 | ||||||||||||
| 1995 | 31.44 | 38.75 | 40.23 | 46.47 | 55.52 | 58.82 | 66.34 | 62.84 | 62.52 | 44.29 | 39.97 | ----- | z | 49.74 | ||||||||||||
| 1996 | 30.68 | a | 30.34 | 38.10 | p | 47.37 | 50.24 | 61.30 | 72.11 | 70.16 | 57.07 | 48.32 | 37.28 | 31.37 | 48.75 | |||||||||||
| 1997 | 28.97 | 34.12 | 39.45 | 44.82 | 57.10 | 60.05 | 65.18 | 70.00 | 60.95 | 47.76 | 39.22 | 28.15 | 47.98 | |||||||||||||
| 1998 | 31.69 | 33.84 | 40.08 | 49.22 | 55.76 | 59.98 | 72.71 | 71.53 | 65.82 | 46.94 | 39.80 | 30.02 | 49.78 | |||||||||||||
| 1999 | 34.32 | 35.23 | 40.35 | 44.93 | 51.31 | 58.62 | 66.37 | 71.82 | 60.60 | 49.76 | 42.87 | 33.23 | 49.12 | |||||||||||||
| 2000 | 32.40 | 37.52 | 41.23 | 50.30 | 54.81 | 60.05 | 68.50 | 69.89 | 57.17 | 47.11 | 32.10 | 28.26 | 48.28 | |||||||||||||
| 2001 | 30.42 | 32.41 | a | 41.47 | 43.83 | 55.90 | 59.83 | 67.37 | 72.06 | 65.57 | 48.42 | 40.38 | a | ----- | z | 50.70 | ||||||||||
| 2002 | ----- | z | ----- | z | ----- | z | 46.88 | 53.03 | 60.22 | 68.94 | 65.94 | 61.20 | 46.29 | 39.27 | 33.00 | 52.75 | ||||||||||
| 2003 | 34.98 | 34.39 | 42.31 | 47.87 | 53.63 | 63.83 | 75.35 | 73.69 | 63.28 | 53.05 | 33.43 | 30.69 | 50.54 | |||||||||||||
| 2004 | 29.86 | c | 33.57 | 45.02 | 49.95 | b | 53.79 | 62.52 | 71.40 | 71.71 | 58.25 | 47.04 | f | 36.57 | 33.32 | 49.63 | ||||||||||
| 2005 | 32.40 | 36.73 | 44.73 | 47.68 | 55.90 | 60.83 | g | 69.66 | 70.34 | o | 60.08 | 52.89 | 36.83 | 27.37 | 46.43 | |||||||||||
| 2006 | 37.23 | 32.75 | 40.19 | 48.65 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.70 | |||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 31.68 | 34.56 | 41.87 | 47.79 | 54.73 | 60.77 | 69.24 | 69.64 | 61.44 | 48.72 | 37.28 | 30.04 | 49.18 | |||||||||||||
| S.D. | 3.45 | 3.46 | 2.30 | 2.27 | 2.44 | 2.14 | 2.87 | 3.39 | 3.05 | 2.34 | 3.34 | 3.14 | 0.93 | |||||||||||||
| SKEW | -0.49 | 0.13 | 0.85 | 0.05 | -0.02 | 0.89 | 0.49 | -1.23 | 0.36 | 0.27 | -0.31 | -1.08 | 0.12 | |||||||||||||
| MAX | 37.23 | 40.71 | 47.11 | 52.10 | 59.25 | 65.82 | 75.35 | 73.69 | 67.42 | 53.05 | 42.87 | 33.32 | 50.54 | |||||||||||||
| MIN | 24.44 | 27.84 | 38.87 | 43.83 | 50.24 | 57.62 | 65.18 | 62.18 | 57.07 | 44.29 | 31.24 | 21.90 | 47.98 | |||||||||||||
| NO YRS | 16 | 16 | 15 | 17 | 17 | 15 | 15 | 15 | 17 | 16 | 17 | 15 | 8 | |||||||||||||