YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.18 | 64.47 | 48.45 | 63.37 | i | |||
1968 | 51.39 | 61.79 | 64.65 | a | 69.05 | 80.15 | 90.71 | a | 95.63 | a | 90.87 | 87.17 | 74.68 | a | 62.13 | 48.43 | a | 73.05 | ||||||||
1969 | 54.69 | 53.30 | a | 60.80 | a | 72.57 | b | 83.67 | a | 88.73 | 96.40 | 99.54 | c | 89.75 | 71.13 | 62.16 | a | 54.78 | b | 73.96 | ||||||
1970 | 51.91 | d | 59.61 | 62.41 | b | 66.70 | 81.95 | 90.05 | a | 96.77 | 95.88 | b | 84.78 | c | 72.03 | a | 62.09 | c | 51.12 | b | 72.94 | |||||
1971 | 51.22 | b | 56.84 | 63.16 | 70.67 | a | 75.50 | a | 89.00 | 97.81 | 94.97 | a | 84.32 | 70.14 | c | 56.98 | 47.39 | 71.50 | ||||||||
1972 | 47.82 | 56.93 | 68.87 | d | 69.74 | c | 79.94 | 90.47 | 98.23 | 92.84 | 83.90 | 69.40 | 55.90 | 46.94 | 71.75 | |||||||||||
1973 | 47.06 | 53.95 | 56.72 | a | 68.37 | 82.72 | a | 90.67 | d | 97.22 | a | 94.13 | a | 84.50 | 72.95 | a | 58.89 | b | 51.92 | 71.59 | ||||||
1974 | 47.16 | b | 53.87 | a | 64.92 | 69.33 | 83.11 | 93.62 | 95.42 | 91.94 | 88.16 | b | 75.35 | 60.00 | 48.61 | 72.62 | ||||||||||
1975 | 49.10 | a | 54.04 | 59.24 | 64.93 | 78.85 | a | 89.87 | 96.71 | c | 92.29 | 86.75 | 71.34 | 57.65 | 51.34 | 71.01 | ||||||||||
1976 | 51.47 | b | 58.21 | 60.61 | 67.95 | 82.18 | 88.60 | 96.24 | 90.73 | 83.22 | 69.58 | ----- | z | ----- | z | 74.88 | b | |||||||||
1977 | 48.76 | 56.86 | 57.58 | 72.65 | 73.43 | a | 91.50 | 96.60 | a | 94.58 | 85.15 | 74.58 | 60.05 | 55.13 | 72.24 | |||||||||||
1978 | 51.18 | a | 55.21 | 62.87 | 68.38 | 77.90 | 91.10 | 95.52 | 91.97 | 81.92 | 75.53 | 56.12 | 44.81 | 71.04 | ||||||||||||
1979 | 43.98 | 50.41 | 59.31 | 69.05 | 79.56 | 87.30 | b | 92.02 | 88.58 | 89.10 | 76.10 | 57.30 | 51.81 | 70.38 | ||||||||||||
1980 | 52.56 | 57.79 | a | 59.45 | 69.53 | 75.08 | 86.38 | 94.48 | a | 91.55 | ----- | z | 72.92 | ----- | z | 56.58 | 71.63 | b | ||||||||
1981 | 55.23 | 57.43 | 61.13 | 75.03 | 79.29 | 92.18 | 97.50 | 94.81 | 86.95 | 71.42 | 63.47 | 54.13 | a | 74.05 | ||||||||||||
1982 | 50.59 | b | 56.26 | a | 60.88 | a | 69.45 | b | 79.29 | b | 87.27 | 92.02 | d | 92.58 | a | 84.33 | a | 69.48 | a | 57.62 | 50.34 | c | 70.84 | |||
1983 | 51.87 | 57.33 | a | 61.91 | c | 64.68 | b | 77.82 | a | 86.88 | d | 91.90 | a | 88.18 | 86.48 | 72.27 | 60.45 | a | 53.10 | 71.07 | ||||||
1984 | 51.56 | 54.59 | 62.69 | b | 67.53 | 83.02 | c | 87.57 | 92.50 | 89.77 | 87.07 | 69.18 | a | 58.55 | 48.97 | b | 71.08 | |||||||||
1985 | 49.45 | b | 52.40 | b | 59.84 | 73.02 | a | 81.13 | 89.79 | a | 93.47 | 90.14 | b | 80.64 | a | 71.77 | a | 56.52 | d | 51.76 | b | 70.83 | ||||
1986 | 55.13 | e | 58.21 | b | ----- | z | 71.65 | 81.06 | 91.62 | 91.66 | 96.11 | c | 80.42 | 71.63 | 62.72 | 53.41 | b | 73.97 | a | |||||||
1987 | 49.82 | a | 57.72 | a | 61.42 | 74.98 | d | 79.75 | a | 89.72 | 91.16 | 93.33 | a | 86.43 | 77.35 | a | 59.78 | a | 48.31 | b | 72.48 | |||||
1988 | 49.33 | a | 56.92 | e | 63.53 | a | 68.62 | d | 79.48 | b | 88.03 | 96.65 | 91.54 | d | 83.93 | 79.82 | a | 62.02 | 53.10 | a | 72.75 | |||||
1989 | 50.07 | a | 55.46 | 67.41 | b | 77.57 | 80.64 | i | 89.30 | 95.22 | b | 90.77 | 84.84 | a | 73.11 | 63.23 | 53.98 | 72.82 | a | |||||||
1990 | 51.35 | a | 53.71 | 65.36 | b | 73.32 | 78.94 | 89.12 | 94.61 | 91.08 | a | 86.93 | a | 74.75 | a | 62.20 | b | 47.46 | c | 72.40 | ||||||
1991 | 50.60 | 60.45 | 56.84 | c | 68.73 | b | 75.65 | 84.63 | 92.98 | 91.53 | 85.17 | 77.75 | a | 61.00 | 52.28 | b | 71.47 | |||||||||
1992 | 50.74 | 58.44 | c | 61.60 | 72.62 | 80.84 | b | 86.77 | 91.19 | b | 92.79 | 86.87 | 75.68 | 58.12 | 48.98 | 72.05 | ||||||||||
1993 | 50.40 | a | 54.66 | 63.26 | b | 70.47 | a | 80.42 | a | 85.60 | 90.71 | 90.81 | 84.90 | a | 74.55 | 57.37 | 51.92 | 71.25 | ||||||||
1994 | 53.58 | 52.61 | 65.93 | a | 72.29 | a | 78.27 | 93.02 | 95.27 | 95.97 | 87.72 | 72.23 | a | 55.52 | a | 53.41 | c | 72.99 | ||||||||
1995 | 52.57 | a | 61.88 | 61.50 | 68.71 | a | 75.31 | 85.41 | a | 94.35 | 95.21 | 89.76 | a | 75.74 | 66.93 | 55.43 | a | 73.57 | ||||||||
1996 | 54.79 | b | 61.29 | 66.02 | 74.73 | 84.05 | a | 91.83 | a | 99.06 | 97.98 | 86.83 | 75.47 | a | 63.22 | 54.25 | a | 75.79 | ||||||||
1997 | 54.30 | a | 58.04 | 68.34 | 72.38 | 87.85 | 90.05 | a | 93.77 | 96.28 | a | 87.69 | a | 73.90 | 62.70 | b | 51.17 | a | 74.71 | |||||||
1998 | 54.52 | 54.84 | 62.24 | 66.77 | 76.47 | 86.03 | a | 96.11 | 95.83 | a | 86.58 | 72.74 | 60.86 | a | 52.23 | 72.10 | ||||||||||
1999 | 55.34 | 57.96 | a | 66.58 | 66.93 | 79.53 | 88.55 | 93.85 | 93.68 | 87.07 | a | 77.31 | b | 64.77 | 54.12 | a | 73.81 | |||||||||
2000 | 56.67 | b | 59.52 | 63.87 | 76.53 | 87.10 | a | 94.17 | 96.76 | 96.28 | a | 86.87 | 74.70 | a | 56.31 | a | 55.27 | 75.34 | ||||||||
2001 | 51.79 | 55.52 | c | 64.89 | 70.50 | c | 86.94 | 92.82 | 95.65 | 96.77 | 89.97 | 77.47 | 64.81 | a | 50.13 | d | 74.77 | |||||||||
2002 | 51.00 | g | 56.36 | 61.55 | 76.88 | b | 81.16 | b | 92.82 | 98.77 | 95.00 | a | 88.04 | f | 72.97 | 62.81 | a | 53.67 | b | 75.20 | b | |||||
2003 | 58.52 | a | 56.24 | k | 63.33 | h | 69.83 | r | 81.86 | c | 92.38 | b | 98.78 | b | 95.48 | b | 89.50 | f | 80.94 | 58.79 | b | 53.11 | d | 77.48 | d | |
2004 | 52.10 | g | 54.21 | c | 69.25 | e | 72.43 | g | 83.37 | d | 92.80 | c | 96.92 | f | 94.06 | g | 86.38 | a | 73.20 | f | 58.58 | e | 52.15 | d | 70.96 | e |
2005 | 54.07 | d | 56.80 | 63.14 | f | 69.29 | f | 83.44 | g | 88.02 | d | 98.05 | b | 93.07 | i | ----- | z | 79.40 | u | 57.08 | x | 52.68 | q | 74.24 | h | |
2006 | 54.62 | r | 57.69 | l | 59.37 | l | 71.06 | f | 86.53 | m | 93.22 | e | 99.21 | j | 94.71 | g | 84.38 | i | 72.17 | d | 62.82 | h | 50.97 | p | 82.69 | j |
2007 | 47.94 | w | 58.50 | h | 65.50 | k | 72.70 | j | 83.64 | j | 90.78 | c | 97.52 | h | 94.03 | l | 88.45 | j | ----- | z | ----- | z | ----- | z | 90.78 | k |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 51.68 | 56.52 | 62.76 | 70.64 | 80.35 | 89.71 | 95.16 | 93.38 | 85.96 | 73.88 | 60.33 | 51.62 | 72.51 | |||||||||||||
S.D. | 2.96 | 2.68 | 3.22 | 3.29 | 3.37 | 2.51 | 2.39 | 2.69 | 2.33 | 2.89 | 2.99 | 2.79 | 1.45 | |||||||||||||
SKEW | -0.10 | 0.08 | 0.17 | 0.34 | 0.20 | -0.14 | -0.26 | 0.11 | -0.50 | 0.36 | 0.14 | -0.44 | 0.61 | |||||||||||||
MAX | 58.52 | 61.88 | 69.25 | 77.57 | 87.85 | 94.17 | 99.06 | 99.54 | 89.97 | 80.94 | 66.93 | 56.58 | 75.79 | |||||||||||||
MIN | 43.98 | 50.41 | 56.72 | 64.68 | 73.43 | 84.63 | 90.71 | 88.18 | 80.42 | 69.18 | 55.52 | 44.81 | 70.38 | |||||||||||||
YRS | 36 | 37 | 35 | 35 | 36 | 40 | 37 | 36 | 34 | 38 | 36 | 37 | 30 |