YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1973 | ----- | z | ----- | z | ----- | z | ----- | z | 91.00 | 101.00 | 100.00 | 98.00 | a | 95.00 | 83.00 | 69.00 | 58.00 | ----- | z | |||||||
1974 | 55.00 | 57.00 | 66.00 | 79.00 | a | ----- | z | 100.00 | 99.00 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 95.00 | 94.00 | 86.00 | 66.00 | 60.00 | a | ----- | z | ||||
1994 | 58.00 | 56.00 | 73.00 | g | 83.00 | d | 85.00 | 94.00 | 99.00 | 95.00 | 89.00 | 76.00 | 64.00 | 54.00 | a | 99.00 | l | |||||||||
1995 | 58.00 | 70.00 | 62.00 | 73.00 | 83.00 | a | 92.00 | 95.00 | 95.00 | 91.00 | 81.00 | 70.00 | 62.00 | 95.00 | a | |||||||||||
1996 | 58.00 | 65.00 | 71.00 | a | 73.00 | b | 85.00 | 93.00 | 98.00 | 98.00 | 90.00 | 87.00 | 66.00 | 59.00 | a | 98.00 | d | |||||||||
1997 | 59.00 | 62.00 | 73.00 | a | 75.00 | 87.00 | a | 87.00 | 95.00 | 97.00 | 89.00 | a | 83.00 | a | 72.00 | a | 52.00 | a | 97.00 | f | ||||||
1998 | 55.00 | a | 51.00 | a | 66.00 | a | 77.00 | 80.00 | 87.00 | 103.00 | a | 101.00 | a | 95.00 | b | 78.00 | b | 60.00 | a | 57.00 | 103.00 | j | ||||
1999 | 55.00 | a | 60.00 | 65.00 | 77.00 | b | 87.00 | b | 92.00 | c | 99.00 | b | 94.00 | a | 87.00 | a | 83.00 | c | 74.00 | d | 58.00 | 99.00 | s | |||
2000 | 57.00 | 60.00 | a | 71.00 | b | 79.00 | b | 87.00 | b | 93.00 | d | 99.00 | d | 101.00 | c | 92.00 | d | 81.00 | d | 65.00 | c | 52.00 | g | ----- | z | |
2001 | 57.00 | 61.00 | l | 69.00 | 78.00 | b | 93.00 | d | 97.00 | d | 101.00 | b | 99.00 | d | 90.00 | c | 86.00 | b | 70.00 | b | 47.00 | b | ----- | z | ||
2002 | 55.00 | c | 64.00 | 69.00 | b | 76.00 | a | 87.00 | c | 96.00 | c | 106.00 | 97.00 | h | 96.00 | a | 76.00 | b | 63.00 | d | 61.00 | e | ----- | z | ||
2003 | 61.00 | c | 66.00 | c | 74.00 | c | 71.00 | d | 94.00 | a | 94.00 | h | 104.00 | e | 101.00 | k | 92.00 | c | 84.00 | f | 67.00 | a | 57.00 | b | ----- | z |
2004 | 49.00 | h | 58.00 | d | 75.00 | c | 80.00 | b | 85.00 | c | 92.00 | e | 95.00 | h | 97.00 | m | 92.00 | b | 79.00 | i | 58.00 | g | 55.00 | l | ----- | z |
2005 | 48.00 | j | 62.00 | j | 74.00 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 80.00 | 69.00 | b | 56.00 | a | ----- | z | |
2006 | 56.00 | b | 61.00 | a | 62.00 | 79.00 | b | 93.00 | a | 98.00 | 103.00 | 95.00 | 95.00 | a | 83.00 | 76.00 | 55.00 | 103.00 | g | |||||||
2007 | 52.00 | 65.00 | b | 78.00 | b | 84.00 | b | 90.00 | 94.00 | a | 105.00 | 101.00 | 95.00 | 81.00 | 74.00 | 59.00 | 105.00 | g | ||||||||
2008 | 47.00 | 62.00 | 65.00 | 80.00 | 97.00 | a | 96.00 | 97.00 | 97.00 | 87.00 | s | 85.00 | b | 71.00 | 62.00 | a | 97.00 | w | ||||||||
2009 | 60.00 | b | 60.00 | 67.00 | l | 86.00 | a | 93.00 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 94.00 | a | 92.00 | c | 74.00 | 61.00 | ----- | z | ||
2011 | 55.00 | 61.00 | 62.00 | 75.00 | c | 81.00 | 92.00 | a | 97.00 | b | 95.00 | b | 93.00 | a | 89.00 | d | 62.00 | d | 56.00 | b | 97.00 | s | ||||
2012 | 58.00 | 59.00 | d | 67.00 | 89.00 | 87.00 | 93.00 | 100.00 | 97.00 | a | 91.00 | 83.00 | f | 73.00 | 58.00 | 100.00 | k | |||||||||
2013 | 50.00 | 58.00 | 70.00 | 80.00 | 88.00 | 99.00 | a | 102.00 | a | 95.00 | a | 91.00 | 75.00 | 65.00 | 55.00 | h | 102.00 | k | ||||||||
2014 | 60.00 | h | 64.00 | f | 73.00 | g | 77.00 | c | 87.00 | l | 89.00 | h | 98.00 | t | 94.00 | a | 92.00 | 84.00 | a | 70.00 | j | 62.00 | a | ----- | z | |
2015 | 58.00 | a | 66.00 | b | 79.00 | a | 81.00 | 80.00 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 56.00 | 61.11 | 69.11 | 78.67 | 88.05 | 94.22 | 100.18 | 96.88 | 92.15 | 82.58 | 68.50 | 57.58 | 96.50 | |||||||||||||
S.D. | 3.42 | 4.34 | 5.25 | 4.39 | 4.56 | 3.90 | 3.30 | 2.45 | 2.46 | 4.48 | 4.56 | 3.81 | 2.12 | |||||||||||||
SKEW | -1.08 | -0.16 | 0.33 | 0.49 | 0.14 | -0.10 | 0.11 | 0.59 | -0.22 | 0.10 | -0.11 | -1.11 | 0.00 | |||||||||||||
MAX | 61.00 | 70.00 | 79.00 | 89.00 | 97.00 | 101.00 | 106.00 | 101.00 | 96.00 | 92.00 | 76.00 | 62.00 | 98.00 | |||||||||||||
MIN | 47.00 | 51.00 | 62.00 | 71.00 | 80.00 | 87.00 | 95.00 | 94.00 | 87.00 | 75.00 | 60.00 | 47.00 | 95.00 | |||||||||||||
YRS | 19 | 19 | 18 | 21 | 19 | 18 | 17 | 17 | 20 | 19 | 20 | 19 | 2 |