YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.16 | b | 74.47 | a | 77.19 | a | 66.97 | a | 58.32 | ----- | z | 70.22 | g | |
1980 | ----- | z | 59.88 | a | 57.52 | a | 61.78 | 61.02 | a | 69.20 | 76.34 | 75.66 | ----- | z | 67.48 | a | 59.87 | 57.98 | 64.67 | b | ||||||
1981 | 56.55 | 58.48 | 56.71 | 62.59 | a | 66.27 | 74.62 | 75.98 | a | 78.11 | 74.17 | 64.02 | 60.73 | 56.97 | 65.43 | |||||||||||
1982 | 52.89 | h | 57.33 | d | 56.24 | f | 59.84 | a | 64.27 | g | 65.98 | e | 72.23 | e | ----- | z | 72.98 | g | 66.68 | f | 58.00 | f | 52.00 | f | 63.85 | h |
1983 | 56.40 | a | 56.74 | e | 57.67 | b | 57.71 | a | 64.61 | d | 67.85 | d | 73.72 | d | 79.54 | e | 77.76 | g | 69.89 | h | 60.30 | g | 56.81 | e | 63.45 | c |
1984 | 56.73 | c | 55.87 | f | 59.70 | d | 60.94 | e | 68.70 | c | 70.04 | c | 78.85 | d | 75.72 | b | 79.58 | f | 65.04 | f | ----- | z | 53.34 | c | 65.50 | d |
1985 | 53.18 | ----- | z | 54.59 | d | 62.39 | c | 65.04 | e | 70.76 | c | 76.54 | e | 74.67 | d | 69.39 | h | 66.92 | e | 56.94 | f | 55.92 | g | 65.51 | d | |
1986 | 58.98 | e | 57.68 | f | 58.80 | f | 60.54 | e | 64.64 | c | 70.80 | c | 72.72 | d | 76.39 | d | 66.08 | f | 65.12 | g | 60.94 | d | 54.69 | e | 64.96 | d |
1987 | 52.36 | f | 55.67 | d | 56.83 | d | 64.70 | e | 66.37 | e | 69.94 | c | 71.19 | e | 73.24 | d | 73.75 | d | 70.46 | g | 59.40 | f | 50.26 | d | 64.66 | c |
1988 | 54.62 | g | 57.83 | f | 60.29 | e | 61.00 | m | 65.58 | g | 67.14 | e | 74.15 | e | 74.20 | a | 71.81 | f | 68.88 | f | 58.40 | j | 53.94 | g | 68.95 | h |
1989 | 51.56 | e | 54.80 | h | 60.52 | g | 65.71 | f | 64.98 | i | 69.20 | g | 74.11 | c | 73.78 | a | 72.68 | h | 66.60 | g | 61.50 | e | 55.48 | h | 65.24 | h |
1990 | 53.80 | h | 53.73 | f | 58.26 | f | 63.84 | e | 66.05 | i | 72.87 | g | 76.72 | f | 74.90 | e | 74.91 | g | 69.25 | g | 59.52 | h | 52.80 | d | 63.85 | i |
1991 | 55.50 | g | 59.43 | f | 54.40 | e | 61.14 | e | 63.48 | g | 67.32 | e | 72.96 | c | 73.41 | b | 73.12 | e | 68.95 | i | 59.98 | c | 52.56 | f | 66.05 | e |
1992 | 54.48 | g | 58.88 | d | 58.11 | d | 66.69 | f | 70.26 | d | 70.98 | g | 76.29 | g | 79.71 | e | 74.71 | d | 67.39 | h | 58.50 | e | 50.67 | h | 66.70 | f |
1993 | 54.82 | i | 54.91 | e | 59.27 | g | 63.08 | e | 67.32 | i | 70.73 | d | 71.75 | c | 72.82 | f | 74.04 | g | 69.43 | p | 60.57 | h | ----- | z | 65.12 | h |
1994 | 56.91 | i | 55.57 | f | 60.70 | f | 62.96 | g | 64.24 | f | 73.48 | f | 74.48 | c | 79.52 | 74.95 | 66.55 | a | 54.60 | 54.42 | a | 67.42 | f | |||
1995 | 55.94 | 62.11 | e | 60.32 | a | 61.50 | 63.46 | e | 70.16 | h | 76.11 | c | 78.65 | 76.32 | b | 69.76 | 63.84 | e | 56.41 | i | 66.80 | b | ||||
1996 | 57.26 | h | 59.07 | a | 59.91 | i | 66.00 | c | 68.43 | j | 72.80 | b | 77.17 | b | 78.60 | e | 74.93 | g | 66.10 | j | 61.74 | c | 57.29 | b | 67.53 | e |
1997 | 57.10 | f | 56.05 | i | 62.94 | g | 63.39 | c | 72.14 | b | 71.91 | c | 73.86 | c | 78.31 | d | 79.19 | c | 68.36 | c | 63.08 | e | 54.47 | a | 69.41 | c |
1998 | 55.02 | f | 55.54 | 58.68 | i | 58.58 | d | 63.02 | i | 67.60 | f | 75.71 | e | 78.12 | e | 73.68 | e | 65.19 | g | 58.31 | f | 52.22 | h | 68.32 | g | |
1999 | 55.13 | d | 54.25 | d | 54.77 | a | 57.72 | a | 63.44 | f | 67.31 | c | 72.95 | b | 74.18 | 71.70 | 70.25 | c | 59.93 | 55.25 | a | 63.04 | a | |||
2000 | 56.71 | 57.66 | a | 57.35 | 63.05 | 66.55 | c | 71.60 | 73.06 | 75.74 | b | 72.86 | a | 65.12 | e | 55.66 | a | 55.88 | a | 64.27 | ||||||
2001 | 51.21 | b | 52.59 | 59.03 | 58.24 | a | 67.67 | a | 70.98 | b | 72.55 | 74.68 | 71.92 | 66.37 | d | 59.55 | a | 51.12 | a | 62.99 | ||||||
2002 | 53.13 | 56.91 | a | 56.80 | d | 61.52 | b | 64.18 | 69.71 | a | 73.15 | 72.43 | a | 73.24 | c | 63.56 | e | 62.27 | f | 54.52 | 63.56 | a | ||||
2003 | 60.67 | b | 56.88 | d | 59.17 | a | 58.71 | f | 64.19 | 68.29 | b | 75.23 | a | 76.61 | 74.53 | 70.45 | l | 58.72 | 53.37 | 64.77 | b | |||||
2004 | 55.17 | b | 54.34 | a | 63.80 | d | 62.86 | a | 67.24 | 69.12 | e | 73.92 | a | 73.19 | 73.71 | b | 65.41 | c | 57.63 | 56.40 | b | 64.40 | ||||
2005 | 55.74 | b | 56.20 | a | 59.60 | 61.24 | a | 66.03 | 68.00 | a | 74.74 | d | 75.59 | c | 70.16 | a | 66.58 | f | 61.65 | 57.36 | b | 64.21 | a | |||
2006 | 55.42 | a | 58.13 | b | 53.75 | a | 61.75 | 67.12 | b | 74.19 | d | 79.91 | b | 75.57 | d | 73.57 | a | 65.27 | a | 62.54 | e | 54.95 | a | 65.18 | ||
2007 | 50.90 | f | 55.65 | b | 61.80 | a | 61.82 | b | 66.03 | b | 69.62 | b | 74.50 | 77.26 | 71.21 | d | 68.38 | c | 61.55 | 53.36 | b | 65.56 | a | |||
2008 | 53.79 | 55.17 | h | 60.31 | g | 63.62 | e | 64.22 | a | 72.35 | d | 74.42 | 76.10 | a | 74.70 | 70.62 | b | 64.02 | a | 54.88 | a | 66.87 | b | |||
2009 | 59.23 | 55.79 | 59.39 | 62.45 | 67.64 | b | 68.33 | a | 75.95 | a | 76.32 | a | 77.25 | b | 67.18 | 61.17 | a | 53.94 | 65.38 | |||||||
2010 | 56.08 | a | 57.04 | a | 59.39 | 58.91 | a | 62.61 | 67.67 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.81 | g | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 55.64 | 56.86 | 58.14 | 61.58 | 66.00 | 69.94 | 74.57 | 76.02 | 74.10 | 67.01 | 60.26 | 54.76 | 64.61 | |||||||||||||
S.D. | 2.50 | 2.15 | 2.53 | 2.12 | 2.54 | 2.24 | 2.01 | 2.10 | 2.18 | 2.09 | 2.44 | 2.01 | 0.94 | |||||||||||||
SKEW | 0.08 | 0.37 | 0.11 | -0.23 | 0.43 | 0.33 | 0.76 | 0.24 | 0.48 | 0.16 | -0.60 | -0.40 | -0.82 | |||||||||||||
MAX | 60.67 | 62.11 | 63.80 | 66.00 | 72.14 | 74.62 | 79.91 | 79.71 | 79.19 | 70.62 | 64.02 | 57.98 | 65.43 | |||||||||||||
MIN | 51.21 | 52.59 | 53.75 | 57.71 | 61.02 | 65.98 | 71.19 | 72.43 | 70.16 | 63.56 | 54.60 | 50.26 | 62.99 | |||||||||||||
YRS | 18 | 21 | 21 | 26 | 21 | 24 | 29 | 29 | 20 | 16 | 21 | 21 | 6 |