YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1971 | ----- | z | ----- | z | ----- | z | ----- | z | 77.39 | 90.43 | 100.26 | 100.35 | 92.50 | 75.81 | 67.13 | 52.87 | 82.09 | d | ||||||||
1972 | 58.32 | 67.97 | 77.55 | 79.57 | 90.92 | s | ----- | z | ----- | z | ----- | z | ----- | z | 67.32 | l | 60.47 | 53.26 | 66.19 | f | ||||||
1973 | 52.61 | 57.50 | 57.94 | 69.33 | 82.52 | 91.73 | 97.45 | 93.55 | 85.93 | 76.84 | 63.63 | 60.52 | 74.13 | |||||||||||||
1974 | 51.48 | 61.36 | 66.58 | 68.87 | 79.26 | 93.40 | 93.90 | 93.55 | 91.37 | 76.13 | 65.60 | 55.19 | 74.72 | |||||||||||||
1975 | 58.81 | 59.36 | 60.94 | 61.53 | 78.32 | 88.33 | 96.77 | 93.29 | 89.63 | 74.87 | 65.57 | 61.81 | 74.10 | |||||||||||||
1976 | 60.81 | 61.79 | 63.52 | b | 67.70 | 82.42 | 87.27 | 93.55 | 88.16 | 82.13 | 75.10 | 69.10 | 60.58 | 74.34 | ||||||||||||
1977 | 54.61 | 66.18 | 59.61 | 74.57 | 70.06 | 90.87 | 94.61 | 93.06 | 86.33 | 80.71 | 70.00 | 63.65 | 75.36 | |||||||||||||
1978 | 55.26 | 60.86 | 66.10 | 67.10 | 79.68 | 90.53 | 95.16 | 94.23 | 83.03 | 83.32 | 62.03 | 53.58 | 74.24 | |||||||||||||
1979 | 49.77 | 56.39 | 63.26 | 71.97 | 80.19 | 90.57 | 95.10 | 91.45 | 92.60 | 77.52 | 63.43 | 61.48 | 74.48 | |||||||||||||
1980 | 60.16 | 62.79 | 61.23 | 70.93 | 73.26 | 85.07 | 96.96 | e | 94.32 | 88.43 | 78.65 | 69.57 | 65.68 | 75.59 | ||||||||||||
1981 | 61.16 | 63.36 | 63.48 | 76.00 | 81.61 | 94.80 | 96.61 | 97.94 | 90.33 | 74.13 | 69.10 | 61.94 | 77.54 | |||||||||||||
1982 | 54.61 | 62.36 | 61.87 | 69.83 | 82.17 | a | 87.83 | 94.55 | 94.68 | 85.55 | a | 74.61 | 60.20 | 54.93 | a | 73.60 | ||||||||||
1983 | 59.03 | 58.82 | 61.42 | 64.70 | 80.84 | 89.33 | 95.26 | 91.97 | 92.43 | 75.81 | 64.93 | 60.35 | 74.57 | |||||||||||||
1984 | 60.61 | 63.72 | 70.06 | 72.57 | 89.32 | 91.57 | 98.35 | 96.55 | 91.63 | 72.26 | 61.83 | 48.70 | a | 76.43 | ||||||||||||
1985 | 55.42 | 61.52 | a | 63.60 | a | 79.50 | 84.32 | 96.83 | 101.00 | 98.39 | 83.41 | a | 78.16 | 62.13 | 58.26 | 76.88 | ||||||||||
1986 | 63.45 | 62.82 | 69.71 | 73.90 | 84.29 | 96.30 | 96.48 | 101.61 | 82.77 | 75.45 | 66.63 | 56.42 | 77.49 | |||||||||||||
1987 | 54.26 | 60.89 | 63.29 | 80.50 | 81.87 | 94.87 | 94.87 | 98.16 | 90.38 | a | 81.03 | 60.57 | 50.84 | 75.96 | ||||||||||||
1988 | 54.23 | 63.34 | 69.00 | 73.21 | a | 81.90 | 91.03 | 102.29 | 96.81 | 90.70 | 85.77 | 66.00 | 55.84 | 77.51 | ||||||||||||
1989 | 54.00 | 58.75 | 71.61 | 83.23 | 83.61 | 93.53 | 102.13 | 95.32 | 89.20 | 76.97 | 69.60 | 61.74 | 78.31 | |||||||||||||
1990 | 57.29 | 57.07 | 70.26 | 77.14 | a | 80.23 | 94.13 | 100.42 | 95.48 | 91.20 | 81.84 | 65.27 | 53.10 | 76.95 | ||||||||||||
1991 | 54.52 | 68.61 | 57.97 | 70.90 | 77.65 | 88.73 | 98.19 | 95.77 | 92.33 | 83.29 | 66.93 | 56.40 | a | 75.94 | ||||||||||||
1992 | 54.90 | 60.52 | 62.68 | 77.57 | 87.45 | 90.53 | 94.77 | 98.74 | 92.43 | 79.71 | 63.43 | 51.65 | 76.20 | |||||||||||||
1993 | 52.13 | 56.54 | 69.19 | 75.73 | 83.55 | 89.60 | 95.10 | 96.84 | 90.53 | 78.32 | 63.53 | 57.16 | 75.69 | |||||||||||||
1994 | 61.55 | 55.86 | 69.39 | 75.83 | 82.19 | 97.37 | 101.58 | 100.52 | 90.13 | 75.35 | 57.27 | 56.61 | 76.97 | |||||||||||||
1995 | 53.90 | 67.54 | 63.10 | 71.27 | 77.19 | 88.50 | 98.77 | 99.58 | 93.47 | 81.87 | 73.52 | a | 60.03 | a | 77.39 | |||||||||||
1996 | 62.00 | 62.72 | 67.00 | 77.57 | 84.94 | 95.41 | a | 102.42 | 100.26 | 89.27 | ----- | z | ----- | z | ----- | z | 82.40 | c | ||||||||
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 95.47 | a | 97.52 | 89.27 | 75.74 | 66.77 | 52.77 | 79.59 | f | |||||
1998 | 58.87 | 53.64 | 62.29 | 64.22 | c | 70.32 | 82.61 | b | 98.43 | a | 98.84 | 83.86 | b | 74.23 | 64.63 | 55.90 | 72.32 | |||||||||
1999 | 61.39 | 59.79 | 64.65 | 64.87 | 78.74 | 88.00 | 94.07 | a | 94.42 | 89.70 | 82.68 | 68.93 | 58.97 | 75.52 | ||||||||||||
2000 | 60.26 | 59.83 | 65.58 | 75.87 | 84.06 | 93.30 | 96.52 | b | 96.27 | a | 88.63 | 75.03 | a | 59.73 | 60.84 | 76.33 | ||||||||||
2001 | 52.81 | 54.52 | a | 66.80 | a | 68.23 | 88.87 | 92.70 | 94.55 | 98.55 | 91.90 | 82.68 | 65.90 | 54.17 | a | 75.97 | ||||||||||
2002 | 56.06 | 63.29 | 63.77 | 74.73 | 80.81 | 94.20 | 100.45 | 98.00 | 90.67 | 77.17 | a | 67.57 | 55.87 | a | 76.88 | |||||||||||
2003 | 64.73 | a | 57.79 | 65.52 | 64.77 | 80.48 | 91.53 | 99.58 | 96.06 | 93.73 | 86.26 | 58.53 | 56.00 | 76.25 | ||||||||||||
2004 | 56.77 | 54.45 | 72.97 | 73.53 | 81.03 | 91.67 | 96.35 | 95.19 | 87.90 | 73.10 | 59.60 | 55.16 | 74.81 | |||||||||||||
2005 | 54.45 | 55.21 | 61.87 | 68.67 | 74.81 | j | 85.93 | 98.81 | 94.74 | h | 83.75 | b | 75.17 | a | 66.67 | 59.29 | 70.98 | b | ||||||||
2006 | 56.65 | 61.79 | d | 58.23 | 67.23 | 84.74 | 94.28 | a | 100.32 | 95.45 | 89.23 | 75.13 | a | 68.34 | a | 57.17 | b | 75.71 | ||||||||
2007 | 55.58 | 61.39 | 71.61 | 74.60 | 83.70 | d | 92.87 | 99.90 | 98.16 | 86.43 | 75.23 | 70.47 | 52.90 | a | 76.90 | |||||||||||
2008 | 52.48 | 60.28 | 66.87 | 73.10 | 77.42 | 92.57 | 98.29 | 98.39 | 91.77 | 78.48 | h | 68.03 | ----- | z | 77.92 | b | ||||||||||
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 84.07 | 100.84 | 96.23 | 93.77 | 74.30 | a | 68.13 | 54.67 | a | 81.71 | e | |||||
2010 | 56.17 | a | 57.89 | 63.45 | 67.96 | c | 74.43 | a | 90.55 | a | 100.65 | e | 97.40 | a | 92.28 | e | ----- | z | ----- | z | ----- | z | 77.87 | c | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 56.79 | 60.50 | 65.24 | 72.13 | 80.86 | 91.13 | 97.71 | 96.34 | 89.25 | 77.78 | 65.28 | 56.93 | 75.78 | |||||||||||||
S.D. | 3.64 | 3.75 | 4.47 | 5.13 | 4.37 | 3.47 | 2.70 | 2.81 | 3.34 | 3.68 | 3.78 | 3.87 | 1.37 | |||||||||||||
SKEW | 0.30 | 0.20 | 0.54 | 0.01 | -0.55 | -0.42 | 0.17 | -0.53 | -0.72 | 0.74 | -0.22 | 0.16 | -0.39 | |||||||||||||
MAX | 64.73 | 68.61 | 77.55 | 83.23 | 89.32 | 97.37 | 102.42 | 101.61 | 93.77 | 86.26 | 73.52 | 65.68 | 78.31 | |||||||||||||
MIN | 49.77 | 53.64 | 57.94 | 61.53 | 70.06 | 82.61 | 93.55 | 88.16 | 82.13 | 72.26 | 57.27 | 48.70 | 72.32 | |||||||||||||
YRS | 37 | 37 | 37 | 37 | 36 | 38 | 39 | 38 | 39 | 36 | 38 | 37 | 32 |