YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1973 | ----- | z | ----- | z | ----- | z | ----- | z | 68.00 | 75.27 | 77.05 | 77.44 | 70.38 | 64.73 | 52.78 | e | 50.91 | b | 67.07 | d | ||||||
1974 | 48.69 | b | 51.00 | a | 55.13 | 59.14 | a | 65.45 | 75.12 | 78.12 | a | 77.45 | 76.47 | 64.53 | 55.98 | a | 48.56 | d | 62.97 | |||||||
1975 | 49.94 | 50.70 | 51.98 | 52.47 | a | 64.21 | 68.77 | 76.89 | 75.42 | 74.72 | a | 62.00 | 54.23 | 49.56 | 60.91 | |||||||||||
1976 | 50.52 | 51.38 | 51.87 | a | 55.98 | 67.50 | 73.67 | 77.69 | 74.24 | b | 71.73 | 65.94 | 59.84 | a | 51.18 | a | 62.63 | |||||||||
1977 | 50.93 | a | 56.35 | a | 51.48 | 62.25 | 60.35 | 73.15 | 79.82 | 79.92 | a | 72.55 | 68.61 | 59.62 | a | 56.39 | 64.29 | |||||||||
1978 | 52.21 | 53.06 | c | ----- | z | 56.88 | a | 67.17 | a | ----- | z | 79.82 | 77.50 | b | 73.90 | 70.87 | 54.78 | a | 48.00 | 63.42 | b | |||||
1979 | 47.82 | 50.78 | c | 54.61 | c | 59.42 | 65.77 | 71.82 | ----- | z | 75.85 | d | 79.00 | 66.69 | 55.95 | a | 53.40 | 61.92 | a | |||||||
1980 | 53.42 | 57.56 | c | 55.37 | a | 60.70 | 60.14 | c | 69.14 | a | 81.68 | 77.89 | 73.95 | 70.36 | c | ----- | z | 56.44 | 65.15 | a | ||||||
1981 | 53.83 | b | 56.61 | 55.33 | g | 63.88 | d | 68.87 | 78.80 | e | 77.39 | 81.18 | a | 75.63 | 62.56 | 58.03 | 54.48 | 66.48 | a | |||||||
1982 | 48.32 | 53.96 | 51.69 | 57.42 | 63.29 | 65.92 | 76.19 | 78.34 | 72.54 | b | 63.66 | i | 52.48 | 47.73 | a | 60.72 | a | |||||||||
1983 | 52.11 | 51.95 | 54.28 | a | 54.63 | 65.08 | ----- | z | 77.31 | 79.86 | b | 80.35 | g | 69.05 | b | 57.12 | a | 52.89 | 61.43 | b | ||||||
1984 | 54.98 | a | 53.72 | 58.63 | a | 60.85 | g | 72.44 | 73.00 | 83.05 | 81.45 | 80.30 | 64.55 | 56.37 | 50.30 | d | 66.25 | a | ||||||||
1985 | 49.58 | a | 52.07 | a | 53.19 | 63.48 | a | ----- | z | 74.02 | 80.19 | 76.71 | 69.85 | 65.63 | 54.48 | 51.79 | g | 63.92 | b | |||||||
1986 | 55.70 | k | 54.35 | h | 55.96 | e | 59.64 | h | 67.48 | a | 73.70 | c | 76.12 | b | 81.03 | 69.24 | a | ----- | z | 62.82 | 52.52 | 67.36 | d | |||
1987 | 49.52 | d | 52.83 | a | 55.34 | f | 66.00 | e | 68.44 | f | 74.79 | a | 73.57 | a | 77.18 | a | 74.02 | h | 68.93 | h | 56.48 | e | 45.70 | a | 62.01 | d |
1988 | 48.07 | c | 52.17 | c | 55.87 | a | 58.41 | a | 66.77 | e | 69.89 | b | 80.29 | 77.89 | 73.85 | 70.97 | a | 58.40 | 51.67 | a | 63.69 | |||||
1989 | 49.41 | b | 52.07 | 57.90 | 66.31 | a | 66.10 | a | 73.33 | a | ----- | z | 76.39 | 73.72 | ----- | z | 59.98 | b | 52.73 | a | 62.79 | b | ||||
1990 | 50.00 | j | ----- | z | 58.60 | j | 63.61 | k | 65.07 | a | 76.67 | g | 79.53 | a | 76.53 | 71.17 | u | 67.83 | a | 57.23 | 47.77 | 65.66 | f | |||
1991 | 51.35 | a | 57.78 | c | 51.69 | j | 60.02 | e | 63.45 | k | ----- | z | 75.40 | 76.84 | i | 76.62 | a | 69.56 | 58.76 | a | ----- | z | 64.21 | e | ||
1992 | 50.85 | 54.42 | k | 54.72 | b | 64.84 | h | 68.95 | i | 71.30 | c | 77.58 | f | ----- | z | 75.50 | c | 68.61 | l | 56.19 | a | 47.10 | 59.28 | f | ||
1993 | 49.11 | l | 51.25 | j | 57.71 | e | 62.20 | b | ----- | z | 72.65 | c | 71.50 | c | 76.06 | d | 74.38 | m | 67.00 | g | 56.12 | n | 49.90 | k | 68.02 | g |
1994 | 52.82 | l | 50.00 | i | 57.98 | k | 62.25 | p | 63.52 | k | 75.54 | d | 78.43 | h | 82.80 | a | 79.80 | h | 65.15 | h | 52.31 | f | 50.46 | f | 79.17 | j |
1995 | 51.34 | c | 58.71 | g | 56.53 | a | 59.06 | e | 62.65 | e | 72.59 | n | 79.22 | d | 82.84 | f | 79.90 | f | 69.27 | i | ----- | z | 54.12 | b | 60.49 | f |
1996 | 53.30 | f | 55.96 | b | 57.02 | h | 65.25 | f | 69.65 | h | ----- | z | 82.02 | i | 81.38 | f | 78.80 | c | 65.75 | i | 58.88 | f | 51.74 | l | 67.38 | j |
1997 | 52.32 | f | 51.86 | g | 60.09 | h | 62.52 | f | 73.97 | k | 72.44 | m | 77.71 | l | 82.81 | m | 76.59 | n | 66.47 | l | 57.79 | i | 50.06 | n | ----- | z |
1998 | 50.38 | j | 50.40 | b | 55.05 | b | 57.27 | 61.73 | g | 69.38 | b | ----- | z | 83.41 | b | 72.40 | a | 64.19 | 58.31 | i | 50.93 | c | 62.88 | d | ||
1999 | 53.19 | e | 51.52 | f | 55.82 | l | 56.05 | b | 65.34 | b | 70.89 | g | 77.41 | n | 78.84 | b | 74.69 | n | 70.88 | k | 57.98 | c | 52.93 | q | 62.28 | g |
2000 | 54.34 | f | 53.37 | c | 57.40 | b | 63.34 | h | 70.23 | c | 77.94 | n | 77.84 | f | 80.05 | l | 76.59 | n | 62.63 | l | 53.88 | n | 55.95 | l | 60.33 | i |
2001 | ----- | z | 47.62 | l | 57.37 | p | 59.25 | n | 68.11 | m | 76.44 | m | 76.55 | t | 80.62 | e | 76.23 | h | ----- | z | 55.42 | r | 48.20 | k | 80.62 | k |
2002 | 49.33 | j | 54.57 | m | 57.50 | l | 63.72 | a | 64.80 | p | 75.10 | t | 82.03 | p | ----- | z | 78.38 | r | 62.98 | k | 57.57 | o | ----- | z | 63.72 | k |
2003 | 60.17 | m | 54.91 | l | 58.18 | l | 56.59 | s | 65.33 | j | ----- | z | 83.04 | s | 82.08 | f | 79.15 | f | 73.30 | u | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 50.85 | 53.35 | 54.97 | 59.76 | 65.89 | 72.59 | 77.94 | 78.43 | 74.27 | 66.75 | 56.98 | 51.12 | 62.90 | |||||||||||||
S.D. | 2.06 | 2.39 | 2.24 | 3.78 | 3.06 | 3.00 | 2.77 | 2.44 | 3.07 | 2.92 | 2.57 | 3.05 | 1.28 | |||||||||||||
SKEW | 0.32 | 0.62 | -0.13 | 0.05 | -0.02 | -0.28 | -0.41 | 0.42 | 0.28 | 0.01 | 0.21 | 0.06 | -0.62 | |||||||||||||
MAX | 54.98 | 57.78 | 58.63 | 66.31 | 72.44 | 78.80 | 83.05 | 83.41 | 80.30 | 70.97 | 62.82 | 56.44 | 64.29 | |||||||||||||
MIN | 47.82 | 50.40 | 51.48 | 52.47 | 60.14 | 65.92 | 71.50 | 74.24 | 69.24 | 62.00 | 52.48 | 45.70 | 60.91 | |||||||||||||
YRS | 19 | 19 | 18 | 20 | 19 | 19 | 19 | 23 | 19 | 16 | 20 | 20 | 5 |