YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 86.00 | s | 81.00 | 75.00 | 62.00 | a | ----- | z | ||
1987 | 70.00 | 75.00 | 76.00 | 94.00 | 90.00 | 101.00 | 99.00 | 96.00 | 89.00 | 91.00 | 81.00 | 76.00 | 101.00 | |||||||||||||
1988 | 71.00 | 75.00 | 84.00 | 85.00 | 93.00 | 101.00 | 97.00 | 97.00 | 90.00 | 89.00 | a | 83.00 | 67.00 | 101.00 | a | |||||||||||
1989 | 70.00 | 85.00 | 91.00 | 98.00 | 101.00 | 95.00 | a | 100.00 | 98.00 | 92.00 | 91.00 | 80.00 | 68.00 | 101.00 | a | |||||||||||
1990 | 75.00 | 79.00 | 84.00 | 88.00 | 97.00 | 107.00 | 95.00 | 96.00 | 92.00 | 86.00 | a | 84.00 | 72.00 | b | 107.00 | c | ||||||||||
1991 | 63.00 | 74.00 | 83.00 | a | 91.00 | 95.00 | 96.00 | 95.00 | 93.00 | a | 87.00 | 91.00 | 76.00 | a | 72.00 | 96.00 | c | |||||||||
1992 | 63.00 | 74.00 | a | 78.00 | 90.00 | 96.00 | 95.00 | 101.00 | 94.00 | 96.00 | 92.00 | 77.00 | 73.00 | 101.00 | a | |||||||||||
1993 | 66.00 | 73.00 | 82.00 | 89.00 | a | 91.00 | 97.00 | 98.00 | 96.00 | 92.00 | 86.00 | 75.00 | 73.00 | 98.00 | a | |||||||||||
1994 | 75.00 | 75.00 | 84.00 | 88.00 | 94.00 | 110.00 | 100.00 | 101.00 | 96.00 | 88.00 | 82.00 | 72.00 | 110.00 | |||||||||||||
1995 | 72.00 | 81.00 | 88.00 | 84.00 | 95.00 | 98.00 | 103.00 | 94.00 | 101.00 | 87.00 | 82.00 | b | 76.00 | a | 103.00 | c | ||||||||||
1996 | 73.00 | 84.00 | a | 82.00 | 95.00 | 101.00 | 102.00 | 97.00 | 95.00 | 90.00 | 90.00 | 84.00 | 75.00 | 102.00 | a | |||||||||||
1997 | 76.00 | 74.00 | 87.00 | 83.00 | 92.00 | 100.00 | 101.00 | 98.00 | 99.00 | 94.00 | 83.00 | 71.00 | 101.00 | |||||||||||||
1998 | 71.00 | a | 74.00 | 88.00 | 93.00 | 101.00 | 104.00 | 102.00 | 96.00 | 98.00 | 89.00 | 81.00 | 71.00 | 104.00 | a | |||||||||||
1999 | 81.00 | 80.00 | 80.00 | 90.00 | 94.00 | 99.00 | 98.00 | 98.00 | a | 94.00 | 90.00 | 80.00 | 67.00 | a | 99.00 | b | ||||||||||
2000 | 76.00 | 80.00 | 80.00 | 92.00 | 108.00 | a | 96.00 | 101.00 | 98.00 | a | 107.00 | 98.00 | 73.00 | 69.00 | 108.00 | b | ||||||||||
2001 | 60.00 | 76.00 | 77.00 | 90.00 | 95.00 | 103.00 | 102.00 | 97.00 | 95.00 | 91.00 | 83.00 | 70.00 | 103.00 | |||||||||||||
2002 | 73.00 | 79.00 | 86.00 | 93.00 | a | 95.00 | 96.00 | 98.00 | 98.00 | 92.00 | 87.00 | 76.00 | 71.00 | 98.00 | a | |||||||||||
2003 | 76.00 | 76.00 | 83.00 | 91.00 | 101.00 | 95.00 | 100.00 | 104.00 | 93.00 | 90.00 | 83.00 | 76.00 | 104.00 | |||||||||||||
2004 | 73.00 | 77.00 | 87.00 | 86.00 | 97.00 | 100.00 | 98.00 | 95.00 | 94.00 | 86.00 | 75.00 | 71.00 | 100.00 | |||||||||||||
2005 | 72.00 | 74.00 | 82.00 | 85.00 | 98.00 | 100.00 | 101.00 | 95.00 | 97.00 | 92.00 | 85.00 | 75.00 | 101.00 | |||||||||||||
2006 | 79.00 | 78.00 | 87.00 | 96.00 | 102.00 | 101.00 | 100.00 | 97.00 | 90.00 | 91.00 | 91.00 | 75.00 | 102.00 | |||||||||||||
2007 | 72.00 | 76.00 | 83.00 | 83.00 | 89.00 | 95.00 | 94.00 | 99.00 | 95.00 | 95.00 | 85.00 | 80.00 | 99.00 | |||||||||||||
2008 | 74.00 | a | 78.00 | 85.00 | 89.00 | 97.00 | 105.00 | 94.00 | 97.00 | 90.00 | 89.00 | 82.00 | 76.00 | 105.00 | a | |||||||||||
2009 | 73.00 | 80.00 | 86.00 | 91.00 | 96.00 | 97.00 | 101.00 | 97.00 | 94.00 | 95.00 | 83.00 | 66.00 | 101.00 | |||||||||||||
2010 | 73.00 | 66.00 | 88.00 | 90.00 | 95.00 | 102.00 | 94.00 | 98.00 | 100.00 | 87.00 | 79.00 | 77.00 | 102.00 | |||||||||||||
2011 | 74.00 | 83.00 | 89.00 | 95.00 | 101.00 | 110.00 | 103.00 | 104.00 | 100.00 | 91.00 | 79.00 | 64.00 | 110.00 | |||||||||||||
2012 | 74.00 | 75.00 | 90.00 | 102.00 | 100.00 | 104.00 | 99.00 | 104.00 | 100.00 | 91.00 | 85.00 | 79.00 | 104.00 | |||||||||||||
2013 | 77.00 | 73.00 | 86.00 | 89.00 | 98.00 | 106.00 | 95.00 | 96.00 | 95.00 | 91.00 | 77.00 | 71.00 | 106.00 | |||||||||||||
2014 | 70.00 | 82.00 | 82.00 | 88.00 | 96.00 | 101.00 | 95.00 | 96.00 | 97.00 | 86.00 | 78.00 | 73.00 | 101.00 | |||||||||||||
2015 | 72.00 | 79.00 | 83.00 | 87.00 | 85.00 | 95.00 | 93.00 | 97.00 | 95.00 | 89.00 | 80.00 | 75.00 | 97.00 | |||||||||||||
2016 | 75.00 | 86.00 | 81.00 | 86.00 | 92.00 | 100.00 | 102.00 | 95.00 | 90.00 | 92.00 | 86.00 | 73.00 | 102.00 | |||||||||||||
2017 | 77.00 | 85.00 | 88.00 | 87.00 | 93.00 | 105.00 | 94.00 | 90.00 | 92.00 | 88.00 | 81.00 | 75.00 | 105.00 | |||||||||||||
2018 | 74.00 | 79.00 | 88.00 | 90.00 | 100.00 | 103.00 | 103.00 | 94.00 | 92.00 | 90.00 | 73.00 | 68.00 | 103.00 | |||||||||||||
2019 | 74.00 | 73.00 | 82.00 | 88.00 | 89.00 | 99.00 | 100.00 | 103.00 | 94.00 | 84.00 | 76.00 | 69.00 | 103.00 | |||||||||||||
2020 | 70.00 | 70.00 | 85.00 | 90.00 | 99.00 | 100.00 | 106.00 | 102.00 | 99.00 | 94.00 | 84.00 | 74.00 | 106.00 | |||||||||||||
2021 | 67.00 | 76.00 | 78.00 | 85.00 | 88.00 | 99.00 | 92.00 | 94.00 | 93.00 | 92.00 | 82.00 | 76.00 | 99.00 | |||||||||||||
2022 | 70.00 | 74.00 | 88.00 | 88.00 | 104.00 | 106.00 | 100.00 | 100.00 | 89.00 | 83.00 | 76.00 | 70.00 | 106.00 | |||||||||||||
2023 | 71.00 | 75.00 | 79.00 | 83.00 | 91.00 | 101.00 | 104.00 | 103.00 | 98.00 | 86.00 | 86.00 | 73.00 | 104.00 | |||||||||||||
2024 | 68.00 | 82.00 | 79.00 | 83.00 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 72.11 | 77.24 | 83.92 | 89.51 | 95.92 | 100.65 | 98.78 | 97.43 | 94.51 | 89.55 | 80.55 | 72.13 | 102.51 | |||||||||||||
S.D. | 4.30 | 4.35 | 3.84 | 4.27 | 4.87 | 4.14 | 3.47 | 3.31 | 4.19 | 3.48 | 4.12 | 3.97 | 3.32 | |||||||||||||
SKEW | -0.76 | 0.06 | -0.21 | 0.71 | 0.06 | 0.45 | -0.18 | 0.48 | 0.65 | -0.11 | 0.03 | -0.42 | 0.36 | |||||||||||||
MAX | 81.00 | 86.00 | 91.00 | 102.00 | 108.00 | 110.00 | 106.00 | 104.00 | 107.00 | 98.00 | 91.00 | 80.00 | 110.00 | |||||||||||||
MIN | 60.00 | 66.00 | 76.00 | 83.00 | 85.00 | 95.00 | 92.00 | 90.00 | 87.00 | 81.00 | 73.00 | 62.00 | 96.00 | |||||||||||||
YRS | 38 | 38 | 38 | 37 | 37 | 37 | 37 | 37 | 37 | 38 | 38 | 38 | 37 |