YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | 100.00 | c | 104.00 | j | 97.00 | 98.00 | ----- | z | ----- | z | 76.00 | 73.00 | ----- | z | ||||
1992 | 64.00 | 76.00 | 81.00 | q | 98.00 | 100.00 | 99.00 | 103.00 | a | 100.00 | 101.00 | 94.00 | ----- | z | 77.00 | ----- | z | |||||||||
1993 | 76.00 | 74.00 | 85.00 | 94.00 | 97.00 | 104.00 | 104.00 | 102.00 | 97.00 | 96.00 | 79.00 | 75.00 | 104.00 | |||||||||||||
1994 | 77.00 | 82.00 | 87.00 | 91.00 | 100.00 | a | 118.00 | d | 109.00 | a | 107.00 | 99.00 | a | ----- | z | 85.00 | 78.00 | c | ----- | z | ||||||
1995 | 75.00 | 77.00 | 90.00 | 90.00 | b | 99.00 | 99.00 | a | 110.00 | q | 100.00 | y | 101.00 | 90.00 | a | 82.00 | a | 79.00 | b | ----- | z | |||||
1996 | 76.00 | b | 85.00 | d | 83.00 | h | 99.00 | c | 105.00 | 109.00 | b | 101.00 | c | 102.00 | b | 94.00 | 94.00 | g | 89.00 | i | 77.00 | j | ----- | z | ||
1997 | 79.00 | b | 77.00 | 90.00 | b | 90.00 | d | 97.00 | 101.00 | e | 101.00 | b | 101.00 | b | 102.00 | c | ----- | z | 81.00 | 71.00 | h | ----- | z | |||
1998 | 73.00 | a | 81.00 | b | 91.00 | b | 95.00 | c | 103.00 | c | 112.00 | e | ----- | z | ----- | z | 100.00 | 94.00 | c | 81.00 | a | 76.00 | ----- | z | ||
1999 | 80.00 | e | 84.00 | a | 81.00 | q | 94.00 | d | 93.00 | f | 105.00 | a | 108.00 | c | 102.00 | a | 96.00 | c | 91.00 | d | 85.00 | e | 73.00 | c | ----- | z |
2000 | 79.00 | g | 83.00 | c | 83.00 | m | ----- | z | ----- | z | ----- | z | 105.00 | o | 98.00 | 103.00 | 99.00 | g | 78.00 | 69.00 | b | ----- | z | |||
2001 | 74.00 | b | 78.00 | d | 82.00 | a | 93.00 | c | 102.00 | c | 106.00 | 106.00 | a | 101.00 | a | 101.00 | a | 91.00 | d | 85.00 | b | 72.00 | c | 106.00 | y | |
2002 | 78.00 | a | 82.00 | 86.00 | a | 95.00 | 99.00 | a | 104.00 | d | 103.00 | b | 106.00 | a | 96.00 | a | 90.00 | a | 79.00 | 75.00 | a | 106.00 | m | |||
2003 | 76.00 | c | 80.00 | 83.00 | 90.00 | 104.00 | a | 102.00 | 99.00 | a | 106.00 | 96.00 | 90.00 | 86.00 | 77.00 | 106.00 | e | |||||||||
2004 | 76.00 | a | 75.00 | a | 89.00 | 87.00 | a | 98.00 | a | 103.00 | 100.00 | a | 99.00 | d | 97.00 | 87.00 | 76.00 | 75.00 | a | 103.00 | j | |||||
2005 | 74.00 | 74.00 | a | 82.00 | 86.00 | a | 102.00 | 102.00 | a | 106.00 | a | 95.00 | 99.00 | a | 94.00 | b | 86.00 | e | 78.00 | a | 106.00 | m | ||||
2006 | 81.00 | c | 79.00 | b | 88.00 | a | 93.00 | 101.00 | 103.00 | 101.00 | ----- | z | 93.00 | 90.00 | 85.00 | a | 77.00 | b | ----- | z | ||||||
2007 | 71.00 | 80.00 | b | 88.00 | 90.00 | a | 92.00 | 102.00 | d | 97.00 | 102.00 | 98.00 | a | 92.00 | ----- | z | ----- | z | ----- | z | ||||||
2008 | ----- | z | ----- | z | ----- | z | 91.00 | w | 102.00 | 107.00 | 99.00 | 98.00 | 90.00 | 88.00 | 82.00 | ----- | z | ----- | z | |||||||
2009 | 77.00 | 86.00 | k | 88.00 | 95.00 | 101.00 | 102.00 | 104.00 | 100.00 | 95.00 | j | 98.00 | 83.00 | 70.00 | a | 104.00 | v | |||||||||
2010 | 77.00 | 72.00 | 89.00 | 91.00 | 98.00 | b | 109.00 | 96.00 | 100.00 | 98.00 | f | 89.00 | 85.00 | 79.00 | 109.00 | h | ||||||||||
2011 | 77.00 | 86.00 | 91.00 | 97.00 | 104.00 | 109.00 | 102.00 | 106.00 | 101.00 | 93.00 | 84.00 | 69.00 | 109.00 | |||||||||||||
2012 | 78.00 | 82.00 | 90.00 | 101.00 | 99.00 | 107.00 | 102.00 | 105.00 | h | 104.00 | 92.00 | 86.00 | 82.00 | 107.00 | h | |||||||||||
2013 | 78.00 | 76.00 | 89.00 | 93.00 | 101.00 | 105.00 | 101.00 | 101.00 | 97.00 | 94.00 | 79.00 | 76.00 | 105.00 | |||||||||||||
2014 | 78.00 | 86.00 | 87.00 | 92.00 | 99.00 | 107.00 | 106.00 | 102.00 | 102.00 | 91.00 | 79.00 | 78.00 | 107.00 | |||||||||||||
2015 | 78.00 | 81.00 | 89.00 | 89.00 | 90.00 | 101.00 | 103.00 | 103.00 | 100.00 | 94.00 | 81.00 | 80.00 | 103.00 | |||||||||||||
2016 | 78.00 | 89.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 89.00 | u | ----- | z | 87.00 | ----- | z | ----- | z | |||
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | 79.00 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 76.13 | 79.92 | 87.58 | 92.86 | 99.70 | 105.04 | 102.18 | 101.38 | 98.50 | 91.90 | 82.17 | 75.62 | 105.60 | |||||||||||||
S.D. | 3.47 | 4.34 | 2.81 | 3.78 | 3.52 | 4.42 | 3.49 | 3.06 | 3.47 | 2.73 | 3.37 | 3.56 | 2.41 | |||||||||||||
SKEW | -1.93 | 0.14 | -0.85 | 0.29 | -1.10 | 1.09 | 0.11 | 0.15 | -0.60 | 0.30 | -0.34 | -0.42 | 0.40 | |||||||||||||
MAX | 81.00 | 89.00 | 91.00 | 101.00 | 105.00 | 118.00 | 109.00 | 107.00 | 104.00 | 98.00 | 87.00 | 82.00 | 109.00 | |||||||||||||
MIN | 64.00 | 72.00 | 82.00 | 86.00 | 90.00 | 99.00 | 96.00 | 95.00 | 90.00 | 87.00 | 76.00 | 69.00 | 103.00 | |||||||||||||
YRS | 23 | 24 | 19 | 22 | 23 | 23 | 22 | 21 | 22 | 20 | 23 | 21 | 5 |