YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 78.47 | 68.06 | 51.87 | 35.87 | 58.57 | h | ||||
1969 | 37.38 | b | 37.61 | 45.48 | 64.60 | 77.81 | 78.20 | 91.35 | 90.39 | 80.60 | 57.68 | 54.17 | 46.52 | 63.48 | ||||||||||||
1970 | 39.87 | 50.00 | 50.65 | 57.63 | 74.58 | 81.80 | 90.10 | 90.74 | 76.43 | 61.94 | 51.03 | 40.06 | 63.74 | |||||||||||||
1971 | 39.13 | 45.75 | 51.61 | 62.07 | a | 69.52 | 83.93 | 92.39 | 91.61 | 75.97 | 63.13 | 47.40 | 35.35 | 63.16 | ||||||||||||
1972 | 39.87 | 48.48 | 62.97 | 64.20 | 75.58 | 83.77 | 92.81 | 89.71 | 78.83 | 61.90 | a | 45.07 | b | 35.03 | 64.85 | |||||||||||
1973 | 29.35 | 37.75 | 47.35 | 58.63 | 73.84 | 80.77 | 87.52 | 88.00 | 80.17 | 71.03 | a | 51.34 | a | 43.03 | 62.40 | |||||||||||
1974 | 31.45 | 36.64 | 58.00 | 61.63 | 79.71 | 91.30 | 93.23 | 90.61 | 88.12 | d | 78.60 | p | 55.27 | o | 44.87 | 67.56 | b | |||||||||
1975 | 39.39 | 45.14 | 55.43 | c | 58.41 | a | 69.48 | 75.37 | 87.32 | 87.10 | 80.86 | a | 67.52 | h | 40.77 | q | 40.25 | c | 63.88 | b | ||||||
1976 | 39.13 | 45.34 | 51.90 | 58.90 | 71.97 | a | 82.40 | 91.50 | a | 86.26 | 77.20 | 65.10 | 55.38 | a | 42.87 | 64.00 | ||||||||||
1977 | 35.50 | a | 51.11 | a | 51.87 | 67.37 | 67.47 | a | 87.80 | 88.13 | 87.60 | a | 77.77 | ----- | z | ----- | z | 44.10 | 65.87 | b | ||||||
1978 | 35.13 | a | 35.61 | ----- | z | ----- | z | 73.45 | k | 85.03 | 92.33 | a | 88.74 | 79.10 | a | 70.55 | k | 49.41 | a | 30.35 | 61.97 | d | ||||
1979 | 27.26 | 34.84 | c | 46.35 | 60.83 | 70.00 | 85.10 | 91.74 | 84.54 | e | 85.27 | 70.52 | 44.83 | 41.10 | a | 61.87 | ||||||||||
1980 | 35.70 | a | 41.83 | 46.55 | 61.21 | a | 66.48 | 84.90 | 90.32 | 86.97 | 77.50 | 65.77 | 52.03 | 50.65 | 63.33 | |||||||||||
1981 | 47.70 | a | 49.82 | 49.84 | 68.67 | 69.81 | 87.43 | 91.00 | 88.19 | 80.60 | 59.84 | 51.83 | 40.74 | 65.46 | ||||||||||||
1982 | 33.48 | 39.25 | 50.07 | a | 61.37 | 71.21 | b | 81.48 | c | 88.83 | a | 88.33 | a | 73.96 | b | 60.68 | 44.75 | b | 37.90 | a | 60.94 | |||||
1983 | 39.76 | b | 42.35 | b | 50.23 | 55.21 | b | 68.42 | e | 80.22 | c | 86.48 | b | 87.84 | 80.97 | a | 66.54 | c | 47.46 | d | 34.20 | a | 61.64 | |||
1984 | 32.31 | b | 37.68 | a | 51.60 | f | 58.30 | c | 77.63 | a | 81.25 | b | 89.63 | a | 87.38 | b | 80.11 | b | 57.63 | a | 49.79 | b | 35.04 | c | 62.43 | a |
1985 | 35.41 | b | 37.15 | a | 51.17 | a | 66.44 | c | 73.97 | a | 86.59 | a | 90.57 | a | 90.03 | a | 73.24 | a | 64.41 | d | 44.28 | e | 41.48 | b | 62.89 | |
1986 | 46.82 | c | 50.19 | b | 61.71 | c | 61.86 | a | 73.15 | d | 89.17 | g | 87.59 | b | 88.93 | d | 78.21 | a | 67.39 | c | 53.33 | c | 44.77 | 64.91 | a | |
1987 | 38.52 | b | 45.25 | d | 52.67 | d | 69.96 | b | 71.59 | d | 87.00 | c | 86.70 | d | 86.83 | b | 81.79 | b | 71.42 | e | 49.04 | d | 36.77 | e | 64.79 | |
1988 | 33.91 | h | 41.88 | d | 49.89 | d | 66.67 | f | 72.78 | h | 86.13 | 93.35 | 88.00 | r | 69.81 | n | 72.43 | c | 47.21 | a | 38.81 | d | 61.39 | e | ||
1989 | 30.71 | n | 38.39 | e | 59.11 | c | 67.84 | e | 74.38 | b | 79.13 | g | 94.50 | s | 83.57 | q | 80.43 | b | 72.12 | o | 53.50 | h | 44.65 | 60.80 | f | |
1990 | 39.23 | a | 43.08 | d | 57.27 | i | 66.53 | 71.00 | h | 84.57 | g | 90.39 | h | 88.30 | h | 80.84 | e | 67.47 | l | 49.89 | l | 35.57 | j | 57.42 | h | |
1991 | 32.16 | f | 50.10 | h | 47.58 | g | 58.60 | j | 72.05 | i | 82.53 | k | 86.94 | n | 88.71 | j | 79.33 | i | 68.73 | i | 48.71 | m | ----- | z | ----- | z |
1992 | 33.87 | 45.57 | a | 57.32 | 71.52 | c | 76.52 | 83.97 | 88.41 | b | 89.35 | h | 81.83 | g | 69.55 | k | 47.93 | 33.44 | m | 63.14 | d | |||||
1993 | 35.04 | h | 40.11 | i | 54.76 | j | 62.16 | k | 74.80 | k | 82.70 | 87.71 | 85.48 | f | 80.13 | 65.57 | j | 45.52 | a | 39.03 | 67.02 | g | ||||
1994 | 45.45 | 41.21 | 60.63 | a | 59.41 | m | 78.11 | l | 88.06 | l | 93.29 | n | 90.48 | f | 82.88 | m | 59.35 | n | 43.90 | j | 40.64 | t | 49.10 | i | ||
1995 | 39.39 | m | 53.13 | m | 55.65 | k | 61.93 | p | 67.33 | m | 82.83 | r | 89.69 | o | 89.82 | n | 83.64 | s | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 37.35 | 42.58 | 52.90 | 63.01 | 72.66 | 83.67 | 89.96 | 88.41 | 79.42 | 65.03 | 49.18 | 40.15 | 63.27 | |||||||||||||
S.D. | 5.18 | 5.07 | 5.21 | 4.51 | 3.67 | 3.58 | 2.23 | 1.79 | 3.23 | 4.73 | 3.37 | 4.74 | 1.33 | |||||||||||||
SKEW | 0.20 | 0.18 | 0.51 | 0.23 | 0.16 | -0.21 | -0.03 | -0.09 | 0.55 | 0.00 | 0.12 | 0.07 | -0.08 | |||||||||||||
MAX | 47.70 | 51.11 | 62.97 | 71.52 | 79.71 | 91.30 | 93.35 | 91.61 | 88.12 | 72.43 | 55.38 | 50.65 | 65.46 | |||||||||||||
MIN | 27.26 | 34.84 | 45.48 | 55.21 | 66.48 | 75.37 | 86.48 | 84.54 | 73.24 | 57.63 | 44.28 | 30.35 | 60.94 | |||||||||||||
YRS | 22 | 24 | 21 | 21 | 20 | 21 | 22 | 19 | 23 | 17 | 20 | 23 | 13 |