YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | 45.45 | 54.78 | 66.95 | 67.97 | 77.15 | 85.18 | 94.65 | a | 90.00 | a | 82.10 | 68.47 | 55.32 | 46.28 | a | 69.52 | ||||||||||
1973 | 48.31 | 53.96 | 56.32 | 65.42 | 79.93 | a | 88.90 | a | 93.60 | b | 91.29 | 85.92 | 74.16 | 59.88 | a | 51.50 | 70.77 | |||||||||
1974 | 47.47 | 54.76 | a | 63.73 | 67.60 | 79.81 | 90.92 | 93.93 | a | 91.58 | a | 89.65 | 74.73 | 59.37 | 51.58 | 72.09 | ||||||||||
1975 | ----- | z | 54.39 | 58.58 | 62.03 | 76.94 | 86.67 | 93.35 | 89.62 | a | 85.53 | 71.28 | b | 57.20 | 51.35 | 71.54 | a | |||||||||
1976 | 49.24 | 57.26 | 60.82 | 66.73 | 79.60 | 85.35 | 94.73 | a | 91.81 | 85.38 | d | 76.21 | 66.88 | 47.00 | 71.75 | |||||||||||
1977 | 50.52 | a | 60.66 | 61.18 | 72.03 | 71.50 | a | 89.29 | a | ----- | z | 91.40 | 83.65 | ----- | z | 61.38 | a | 54.00 | a | 69.56 | b | |||||
1978 | 50.16 | 54.27 | 61.00 | 63.88 | 74.60 | a | 86.22 | 89.26 | 86.63 | a | 74.27 | 77.48 | b | 63.03 | 49.98 | j | 70.98 | a | ||||||||
1979 | ----- | z | 54.75 | 58.76 | 65.85 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.90 | 57.06 | h | |||
1980 | 53.02 | 56.66 | 58.45 | 68.27 | 74.06 | d | 84.25 | 92.34 | 91.97 | 83.43 | 71.53 | 57.65 | 51.17 | b | 70.23 | |||||||||||
1981 | 51.15 | e | 52.61 | e | 60.34 | b | 74.37 | 78.52 | f | 91.88 | a | 94.39 | h | 92.73 | a | 84.40 | d | 67.81 | e | 60.09 | b | 50.36 | b | 68.57 | b | |
1982 | 46.90 | b | 54.47 | i | 58.38 | a | 67.45 | b | 77.05 | a | 83.73 | 90.05 | 89.21 | b | 79.13 | d | 65.22 | b | 51.33 | 44.62 | a | 68.46 | a | |||
1983 | 47.87 | a | 53.55 | 58.59 | c | 62.32 | b | 75.78 | h | 83.68 | k | ----- | z | 86.61 | d | 86.63 | 72.15 | 58.46 | b | 51.45 | a | 64.18 | c | |||
1984 | 50.84 | 53.11 | b | 61.74 | 66.89 | h | 82.53 | a | 85.77 | 92.24 | 91.03 | 86.53 | 65.18 | a | 55.55 | b | 46.50 | a | 70.09 | a | ||||||
1985 | 47.50 | 52.11 | a | 57.34 | i | 70.59 | h | 77.22 | d | 88.90 | 94.68 | a | 89.38 | a | 76.55 | 69.81 | 54.81 | a | 47.47 | b | 69.84 | b | ||||
1986 | 52.56 | 57.46 | a | 64.97 | a | 67.48 | b | 78.84 | b | 89.03 | 88.73 | 93.36 | c | 77.33 | a | 67.28 | d | 58.37 | 46.85 | 70.19 | ||||||
1987 | 44.79 | e | 53.88 | c | 57.58 | a | 72.96 | d | 77.60 | e | 88.08 | 87.89 | c | 91.27 | 83.10 | 73.21 | 54.88 | b | 44.17 | b | 69.12 | |||||
1988 | 45.82 | c | 53.10 | d | 60.48 | a | 67.55 | b | 76.91 | b | 86.55 | a | 95.62 | a | 90.03 | 81.79 | a | 76.10 | a | 57.48 | a | 46.82 | a | 69.86 | ||
1989 | 45.34 | 52.41 | a | 64.95 | l | 75.57 | a | 78.73 | a | 88.52 | a | 95.95 | 89.58 | a | 82.09 | a | 68.40 | 57.22 | c | 45.43 | c | 70.84 | a | |||
1990 | 46.76 | b | 50.56 | a | 62.84 | c | 72.37 | c | 77.47 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.00 | g |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 83.53 | 68.97 | 59.45 | 50.23 | a | 65.55 | h | |||
1997 | 51.14 | c | 54.62 | 64.94 | 69.83 | 84.47 | 85.87 | 91.12 | a | 93.27 | 84.62 | 68.71 | 57.47 | 46.97 | b | 71.09 | ||||||||||
1998 | 49.67 | a | 52.88 | 59.39 | 64.33 | 70.93 | a | 82.22 | 94.21 | 94.35 | 82.71 | a | 67.44 | 56.21 | a | 47.59 | b | 68.49 | ||||||||
1999 | 49.89 | c | 54.00 | 60.43 | a | 62.36 | e | 76.79 | b | 86.52 | b | 91.52 | 90.80 | a | 84.88 | a | 72.37 | 58.32 | 48.39 | c | 69.69 | |||||
2000 | 52.60 | b | 56.59 | b | 62.62 | b | 73.18 | 82.35 | 90.78 | 92.83 | b | 93.36 | b | 82.52 | a | 70.27 | a | 52.12 | b | 48.96 | c | 71.52 | ||||
2001 | 46.76 | 50.96 | a | 64.98 | 66.69 | a | 85.10 | 90.12 | b | 92.64 | b | 94.56 | 86.95 | 73.19 | 60.63 | 46.55 | b | 71.60 | ||||||||
2002 | 47.20 | a | 54.80 | a | 58.21 | c | 71.16 | b | 78.27 | 89.90 | a | 96.42 | a | 91.74 | b | 84.19 | a | 69.37 | 58.05 | a | 48.55 | b | 70.66 | |||
2003 | 54.44 | 53.87 | a | 62.58 | 64.62 | d | 79.52 | a | 89.35 | 97.24 | 93.14 | b | 87.67 | 76.03 | a | 53.88 | a | 47.05 | c | 71.62 | ||||||
2004 | 48.50 | 51.84 | a | 66.71 | b | 69.98 | e | 79.00 | a | 88.93 | 93.68 | 91.68 | a | 83.12 | 69.38 | a | 55.65 | f | 48.84 | c | 71.97 | a | ||||
2005 | 51.13 | a | 54.90 | c | 61.35 | a | 65.57 | a | 79.03 | b | 84.98 | c | 95.98 | c | 92.67 | e | 80.66 | e | 74.21 | x | 60.25 | h | 49.23 | r | 74.03 | c |
2006 | 51.22 | f | 53.98 | h | 55.41 | t | 66.29 | p | 81.15 | u | 91.67 | c | 98.12 | a | 90.88 | g | 83.54 | e | 68.43 | a | 59.25 | n | 45.40 | p | 85.44 | h |
2007 | 44.47 | p | 53.70 | r | ----- | z | 72.89 | u | 80.90 | 89.02 | 95.90 | a | 93.61 | 82.92 | 69.77 | 60.53 | 45.27 | a | 77.24 | d | ||||||
2008 | 45.88 | b | 53.72 | b | 61.68 | 68.40 | 76.17 | a | 89.10 | 95.53 | 94.34 | 86.18 | 71.19 | 60.74 | c | 47.70 | a | 70.89 | ||||||||
2009 | 50.16 | 52.32 | 59.16 | 67.39 | b | 84.21 | 83.41 | a | 96.72 | a | 91.24 | h | 87.30 | 67.48 | 57.80 | 45.81 | 68.34 | a | ||||||||
2010 | 48.23 | 53.73 | 59.52 | 64.47 | 72.16 | 87.55 | 95.55 | 90.90 | a | 84.32 | 71.81 | 56.35 | 50.65 | a | 69.60 | |||||||||||
2011 | 47.34 | 50.73 | 59.34 | 68.20 | 72.06 | 84.80 | 91.71 | 92.69 | 85.57 | 72.05 | 54.08 | 45.66 | 68.69 | |||||||||||||
2012 | 48.87 | 54.30 | b | 61.08 | 70.17 | a | 81.65 | 88.05 | a | 92.16 | 94.89 | 87.52 | b | 72.27 | 59.12 | d | 50.29 | 71.70 | ||||||||
2013 | 44.97 | 52.18 | 64.43 | b | 72.18 | b | 79.15 | a | 90.47 | 96.00 | 90.61 | ----- | z | ----- | z | ----- | z | ----- | z | 73.75 | d | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 48.76 | 53.99 | 61.16 | 68.07 | 78.18 | 87.64 | 93.69 | 91.57 | 83.70 | 70.87 | 57.86 | 48.25 | 70.48 | |||||||||||||
S.D. | 2.54 | 2.08 | 2.70 | 3.59 | 3.62 | 2.53 | 2.57 | 2.05 | 3.27 | 3.19 | 3.17 | 2.42 | 1.10 | |||||||||||||
SKEW | 0.31 | 0.96 | 0.49 | 0.22 | -0.16 | -0.27 | -0.50 | -0.57 | -0.96 | 0.27 | 0.36 | 0.38 | -0.25 | |||||||||||||
MAX | 54.44 | 60.66 | 66.95 | 75.57 | 85.10 | 91.88 | 98.12 | 94.89 | 89.65 | 77.48 | 66.88 | 54.00 | 72.09 | |||||||||||||
MIN | 44.79 | 50.56 | 56.32 | 62.03 | 70.93 | 82.22 | 87.89 | 86.61 | 74.27 | 65.18 | 51.33 | 44.17 | 68.49 | |||||||||||||
YRS | 32 | 33 | 32 | 32 | 32 | 33 | 31 | 32 | 34 | 32 | 31 | 32 | 19 |