YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 102.00 | b | 104.00 | a | 96.00 | 99.00 | 81.00 | 76.00 | ----- | z | ||||
1963 | 78.00 | d | 82.00 | o | ----- | z | 96.00 | j | 99.00 | 98.00 | 103.00 | 100.00 | 96.00 | 88.00 | 81.00 | 69.00 | ----- | z | ||||||||
1964 | 71.00 | 68.00 | 90.00 | 91.00 | 102.00 | 102.00 | 105.00 | 104.00 | 97.00 | 92.00 | a | 81.00 | 78.00 | 105.00 | a | |||||||||||
1965 | 76.00 | 75.00 | 82.00 | 98.00 | 96.00 | 100.00 | 102.00 | 99.00 | a | 100.00 | a | 94.00 | 82.00 | 76.00 | 102.00 | b | ||||||||||
1966 | 70.00 | 70.00 | c | 86.00 | 88.00 | 98.00 | 100.00 | a | 102.00 | 105.00 | a | 95.00 | 90.00 | 82.00 | 78.00 | 105.00 | e | |||||||||
1967 | 79.00 | 80.00 | b | 94.00 | 90.00 | 101.00 | 100.00 | 100.00 | 100.00 | a | 97.00 | 90.00 | a | 80.00 | 74.00 | a | 101.00 | e | ||||||||
1968 | 75.00 | 74.00 | 81.00 | 85.00 | 100.00 | 103.00 | 99.00 | 99.00 | 95.00 | 93.00 | a | 84.00 | 71.00 | 103.00 | a | |||||||||||
1969 | 80.00 | 75.00 | 79.00 | 88.00 | a | 103.00 | 103.00 | 103.00 | 106.00 | 92.00 | 93.00 | 79.00 | 78.00 | a | 106.00 | b | ||||||||||
1970 | 78.00 | 80.00 | 80.00 | 88.00 | a | 94.00 | a | 102.00 | 103.00 | 102.00 | 99.00 | 87.00 | 81.00 | 78.00 | 103.00 | b | ||||||||||
1971 | 79.00 | 78.00 | 94.00 | 89.00 | 98.00 | 99.00 | 107.00 | 94.00 | 95.00 | 86.00 | 80.00 | 77.00 | 107.00 | |||||||||||||
1972 | 75.00 | 85.00 | 87.00 | 98.00 | 95.00 | 105.00 | 103.00 | 101.00 | 94.00 | 92.00 | 75.00 | 75.00 | 105.00 | |||||||||||||
1973 | 70.00 | 75.00 | 76.00 | 87.00 | 98.00 | 102.00 | 100.00 | 101.00 | 96.00 | 97.00 | 93.00 | a | 78.00 | 102.00 | a | |||||||||||
1974 | 85.00 | 80.00 | 90.00 | 94.00 | 102.00 | 101.00 | 102.00 | 98.00 | 94.00 | 83.00 | 80.00 | 73.00 | 102.00 | |||||||||||||
1975 | 79.00 | 74.00 | 85.00 | 93.00 | a | 91.00 | 102.00 | 94.00 | 98.00 | 93.00 | b | 90.00 | 83.00 | a | 74.00 | b | 102.00 | f | ||||||||
1976 | 71.00 | 86.00 | a | 84.00 | 87.00 | 94.00 | a | 101.00 | 95.00 | 100.00 | 92.00 | 85.00 | 76.00 | 71.00 | b | 101.00 | d | |||||||||
1977 | 65.00 | d | 83.00 | 87.00 | 85.00 | 101.00 | 105.00 | 100.00 | 103.00 | 101.00 | b | 96.00 | 81.00 | 80.00 | a | 105.00 | g | |||||||||
1978 | 71.00 | 76.00 | 89.00 | a | 93.00 | 100.00 | 103.00 | a | 105.00 | 103.00 | 96.00 | 88.00 | a | 78.00 | 77.00 | a | 105.00 | d | ||||||||
1979 | 71.00 | a | 83.00 | 81.00 | 91.00 | 98.00 | b | 101.00 | 102.00 | a | 98.00 | 97.00 | 98.00 | a | 78.00 | 77.00 | 102.00 | e | ||||||||
1980 | 76.00 | a | 82.00 | 83.00 | 91.00 | 97.00 | 109.00 | 105.00 | 104.00 | 96.00 | 91.00 | 87.00 | a | 80.00 | 109.00 | b | ||||||||||
1981 | 71.00 | 81.00 | 80.00 | 89.00 | 98.00 | 107.00 | 101.00 | 101.00 | 94.00 | 89.00 | 82.00 | 79.00 | 107.00 | |||||||||||||
1982 | 75.00 | a | 82.00 | b | 84.00 | c | 92.00 | a | 96.00 | 99.00 | a | 98.00 | 103.00 | 96.00 | 90.00 | 80.00 | a | 72.00 | b | 103.00 | k | |||||
1983 | 70.00 | a | 76.00 | 90.00 | b | 92.00 | 96.00 | 102.00 | 107.00 | 103.00 | 101.00 | a | 94.00 | 80.00 | b | 73.00 | f | 107.00 | l | |||||||
1984 | 72.00 | a | 79.00 | a | 84.00 | 90.00 | a | 101.00 | 99.00 | 97.00 | 99.00 | 100.00 | 84.00 | 87.00 | 70.00 | a | 101.00 | d | ||||||||
1985 | 75.00 | 75.00 | 87.00 | a | 90.00 | 103.00 | 100.00 | 101.00 | a | 104.00 | 99.00 | 90.00 | 78.00 | 74.00 | 104.00 | b | ||||||||||
1986 | 77.00 | 87.00 | 89.00 | a | 90.00 | 98.00 | a | 100.00 | 100.00 | 105.00 | a | 91.00 | 87.00 | a | 77.00 | 71.00 | 105.00 | d | ||||||||
1987 | 77.00 | 78.00 | 78.00 | a | 96.00 | 89.00 | 102.00 | 104.00 | 101.00 | 96.00 | 92.00 | 84.00 | a | 80.00 | a | 104.00 | c | |||||||||
1988 | 69.00 | 83.00 | 88.00 | 87.00 | 100.00 | a | 103.00 | 97.00 | b | 99.00 | 93.00 | 92.00 | 87.00 | a | 72.00 | 103.00 | d | |||||||||
1989 | 75.00 | 89.00 | 97.00 | 98.00 | 104.00 | 104.00 | a | 111.00 | 99.00 | a | 99.00 | 94.00 | 81.00 | 76.00 | 111.00 | b | ||||||||||
1990 | 76.00 | 80.00 | 88.00 | 92.00 | 100.00 | 108.00 | 95.00 | a | 98.00 | 96.00 | 88.00 | 84.00 | 76.00 | 108.00 | a | |||||||||||
1991 | 71.00 | 76.00 | 86.00 | 90.00 | 101.00 | a | 102.00 | b | 98.00 | 104.00 | 96.00 | a | 92.00 | 82.00 | 73.00 | 104.00 | d | |||||||||
1992 | 67.00 | a | 76.00 | a | 82.00 | 97.00 | a | 97.00 | a | 102.00 | 100.00 | b | 99.00 | a | 99.00 | 92.00 | 81.00 | b | 76.00 | 102.00 | i | |||||
1993 | 75.00 | b | 75.00 | 86.00 | 91.00 | e | 95.00 | a | 100.00 | a | 101.00 | 99.00 | e | 95.00 | e | 94.00 | a | 78.00 | 73.00 | 101.00 | t | |||||
1994 | 79.00 | a | 77.00 | a | 87.00 | 93.00 | j | 99.00 | m | 113.00 | ----- | z | 104.00 | 96.00 | a | 91.00 | 84.00 | a | 74.00 | e | ----- | z | ||||
1995 | 77.00 | c | 78.00 | a | 90.00 | a | 93.00 | 98.00 | 96.00 | i | 106.00 | 101.00 | 101.00 | 90.00 | 81.00 | b | 81.00 | a | 106.00 | q | ||||||
1996 | 77.00 | a | 86.00 | 84.00 | c | 99.00 | 104.00 | b | 106.00 | a | 101.00 | 101.00 | 95.00 | 91.00 | a | 88.00 | d | 79.00 | 106.00 | l | ||||||
1997 | 80.00 | 77.00 | b | 90.00 | 90.00 | 94.00 | 101.00 | 101.00 | b | 102.00 | ----- | z | 93.00 | 83.00 | 72.00 | ----- | z | |||||||||
1998 | 74.00 | c | 80.00 | d | 90.00 | g | 94.00 | b | 104.00 | 109.00 | a | 107.00 | b | 98.00 | a | 98.00 | a | 94.00 | ----- | z | 78.00 | c | ----- | z | ||
1999 | 80.00 | 85.00 | 88.00 | a | 95.00 | 96.00 | 105.00 | a | 105.00 | 101.00 | 98.00 | a | 92.00 | q | ----- | z | ----- | z | ----- | z | ||||||
2000 | ----- | z | ----- | z | ----- | z | 96.00 | 107.00 | a | 101.00 | 105.00 | 99.00 | f | 104.00 | b | 101.00 | a | 71.00 | b | 69.00 | c | ----- | z | |||
2001 | 74.00 | c | 81.00 | b | 82.00 | b | 92.00 | a | 100.00 | d | 105.00 | a | 104.00 | c | 101.00 | b | 100.00 | d | 91.00 | c | 87.00 | c | 73.00 | d | ----- | z |
2002 | 80.00 | c | 82.00 | e | 90.00 | h | 99.00 | e | 97.00 | f | 101.00 | h | 103.00 | n | 105.00 | e | 98.00 | e | 91.00 | g | 80.00 | d | 76.00 | c | ----- | z |
2003 | 77.00 | i | 82.00 | e | 85.00 | m | 93.00 | j | 104.00 | k | 101.00 | s | 101.00 | x | 105.00 | u | 97.00 | l | 90.00 | g | 83.00 | o | 77.00 | q | ----- | z |
2004 | ----- | z | 76.00 | m | 87.00 | s | 87.00 | i | 100.00 | j | 105.00 | q | 101.00 | o | 98.00 | m | 95.00 | m | 81.00 | s | 78.00 | m | 63.00 | y | ----- | z |
2005 | 72.00 | l | 78.00 | f | 82.00 | f | 88.00 | k | 103.00 | f | 105.00 | a | 105.00 | b | 99.00 | 102.00 | 95.00 | 86.00 | 81.00 | a | ----- | z | ||||
2006 | 83.00 | a | 87.00 | 88.00 | 94.00 | f | 104.00 | 107.00 | 103.00 | a | 102.00 | k | 92.00 | p | 93.00 | a | 87.00 | 77.00 | a | ----- | z | |||||
2007 | 72.00 | 79.00 | i | 86.00 | 85.00 | u | 88.00 | p | 103.00 | n | 98.00 | j | 102.00 | 98.00 | c | 98.00 | a | 87.00 | 78.00 | a | ----- | z | ||||
2008 | 75.00 | b | 83.00 | d | 89.00 | 93.00 | 106.00 | 106.00 | a | 103.00 | d | 104.00 | a | 93.00 | 90.00 | 81.00 | 81.00 | b | 106.00 | n | ||||||
2009 | 81.00 | a | 88.00 | h | 90.00 | a | 95.00 | j | 102.00 | 102.00 | 101.00 | 103.00 | 95.00 | b | 93.00 | 81.00 | 69.00 | 103.00 | v | |||||||
2010 | 79.00 | 72.00 | 89.00 | 92.00 | 98.00 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 75.23 | 79.31 | 86.10 | 91.83 | 99.02 | 102.95 | 101.93 | 101.23 | 96.68 | 91.59 | 81.80 | 75.45 | 104.62 | |||||||||||||
S.D. | 4.33 | 4.78 | 4.50 | 3.75 | 3.92 | 3.22 | 3.51 | 2.58 | 2.89 | 3.85 | 3.97 | 3.47 | 2.65 | |||||||||||||
SKEW | -0.13 | -0.10 | -0.04 | 0.28 | -0.25 | 0.97 | -0.10 | -0.26 | 0.32 | 0.09 | 0.17 | -0.23 | 0.69 | |||||||||||||
MAX | 85.00 | 89.00 | 97.00 | 99.00 | 107.00 | 113.00 | 111.00 | 106.00 | 104.00 | 101.00 | 93.00 | 81.00 | 111.00 | |||||||||||||
MIN | 65.00 | 68.00 | 76.00 | 85.00 | 89.00 | 98.00 | 94.00 | 94.00 | 91.00 | 83.00 | 71.00 | 69.00 | 101.00 | |||||||||||||
YRS | 44 | 42 | 41 | 40 | 41 | 42 | 43 | 44 | 44 | 44 | 44 | 44 | 21 |