YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 73.00 | t | 79.00 | 81.00 | 90.00 | 105.00 | 107.00 | 99.00 | 99.00 | a | 89.00 | 72.00 | 71.00 | ----- | z | |||||||||
1958 | 69.00 | 75.00 | 71.00 | 88.00 | 100.00 | 101.00 | 108.00 | 102.00 | 101.00 | 87.00 | 77.00 | 75.00 | 108.00 | |||||||||||||
1959 | 73.00 | 72.00 | 77.00 | 92.00 | 95.00 | 105.00 | 107.00 | 99.00 | 99.00 | 89.00 | 75.00 | h | 72.00 | 107.00 | h | |||||||||||
1960 | 67.00 | 67.00 | 85.00 | 89.00 | b | 99.00 | a | 105.00 | 106.00 | 105.00 | a | 99.00 | 93.00 | c | 77.00 | b | 67.00 | d | 106.00 | m | ||||||
1961 | 70.00 | 77.00 | 81.00 | a | 91.00 | 94.00 | 107.00 | a | 105.00 | 106.00 | 95.00 | 90.00 | 72.00 | b | 67.00 | 107.00 | d | |||||||||
1962 | 71.00 | 74.00 | 82.00 | 94.00 | 92.00 | 105.00 | 102.00 | 106.00 | 100.00 | 89.00 | 81.00 | a | 72.00 | 106.00 | a | |||||||||||
1963 | 70.00 | 83.00 | 78.00 | 87.00 | 97.00 | 100.00 | 105.00 | a | 98.00 | 97.00 | 96.00 | 75.00 | a | 66.00 | e | 105.00 | g | |||||||||
1964 | 65.00 | 66.00 | d | 82.00 | d | 87.00 | 97.00 | a | 99.00 | g | 103.00 | d | 102.00 | d | 99.00 | g | 97.00 | c | 75.00 | b | 65.00 | k | ----- | z | ||
1965 | 75.00 | f | 76.00 | a | 76.00 | e | 89.00 | e | 91.00 | h | 95.00 | f | 103.00 | f | 103.00 | i | 95.00 | d | 97.00 | i | 78.00 | f | 72.00 | j | ----- | z |
1966 | 67.00 | l | 70.00 | i | 86.00 | g | 92.00 | k | 93.00 | i | 101.00 | f | 102.00 | h | 103.00 | i | 95.00 | k | 84.00 | j | 79.00 | h | 69.00 | j | ----- | z |
1967 | 71.00 | i | 79.00 | f | 85.00 | g | 79.00 | h | 98.00 | g | 103.00 | f | 108.00 | f | 102.00 | c | 93.00 | i | 89.00 | n | 82.00 | k | 67.00 | j | ----- | z |
1968 | 70.00 | e | 77.00 | g | 86.00 | e | 84.00 | j | 99.00 | f | 108.00 | f | 104.00 | l | 98.00 | f | 101.00 | i | 89.00 | j | 73.00 | 72.00 | ----- | z | ||
1969 | 69.00 | 69.00 | a | 82.00 | 87.00 | 97.00 | 103.00 | a | 108.00 | 105.00 | 97.00 | 90.00 | 75.00 | 71.00 | 108.00 | b | ||||||||||
1970 | 68.00 | 76.00 | a | 79.00 | 80.00 | 97.00 | 110.00 | 109.00 | 102.00 | 100.00 | 82.00 | a | 80.00 | b | 71.00 | 110.00 | d | |||||||||
1971 | 81.00 | 79.00 | 85.00 | 87.00 | 88.00 | a | 108.00 | 107.00 | 98.00 | 103.00 | 87.00 | 76.00 | 67.00 | 108.00 | a | |||||||||||
1972 | 67.00 | a | 77.00 | 85.00 | 88.00 | 91.00 | 110.00 | 107.00 | 104.00 | a | 94.00 | 92.00 | 68.00 | 64.00 | 110.00 | b | ||||||||||
1973 | 66.00 | a | 68.00 | 65.00 | a | 82.00 | f | 91.00 | 107.00 | 108.00 | b | 101.00 | c | 103.00 | c | 88.00 | g | 83.00 | d | 68.00 | f | ----- | z | |||
1974 | 68.00 | 71.00 | 80.00 | b | 84.00 | 101.00 | b | 107.00 | 104.00 | 101.00 | 100.00 | 91.00 | c | 72.00 | d | 62.00 | e | 107.00 | p | |||||||
1975 | 68.00 | h | 74.00 | 76.00 | 76.00 | g | 91.00 | h | 97.00 | g | 102.00 | i | 105.00 | 97.00 | 90.00 | 83.00 | 70.00 | ----- | z | |||||||
1976 | 73.00 | 72.00 | 75.00 | 82.00 | 91.00 | 103.00 | 103.00 | 98.00 | 97.00 | 87.00 | 79.00 | 66.00 | 103.00 | |||||||||||||
1977 | 68.00 | 80.00 | 78.00 | 84.00 | 99.00 | 104.00 | 104.00 | 107.00 | 100.00 | 87.00 | 80.00 | 72.00 | 107.00 | |||||||||||||
1978 | 67.00 | 69.00 | 80.00 | b | 83.00 | 92.00 | 103.00 | 109.00 | 99.00 | c | 96.00 | 94.00 | 79.00 | i | 61.00 | 109.00 | n | |||||||||
1979 | 59.00 | c | 73.00 | 75.00 | 83.00 | 92.00 | 105.00 | 106.00 | d | 103.00 | 106.00 | 94.00 | 73.00 | 74.00 | 106.00 | g | ||||||||||
1980 | 63.00 | 74.00 | 69.00 | a | 88.00 | 91.00 | a | 105.00 | 104.00 | a | 102.00 | 96.00 | 97.00 | 85.00 | 76.00 | e | 105.00 | h | ||||||||
1981 | 70.00 | 79.00 | a | 76.00 | 89.00 | 90.00 | 109.00 | 107.00 | 102.00 | 93.00 | 84.00 | 79.00 | 78.00 | 109.00 | a | |||||||||||
1982 | 67.00 | a | 75.00 | a | 75.00 | d | 84.00 | b | 93.00 | a | 99.00 | a | 104.00 | 100.00 | b | 103.00 | a | 84.00 | 73.00 | b | 64.00 | a | 104.00 | p | ||
1983 | 71.00 | 73.00 | 77.00 | 78.00 | d | 98.00 | a | 96.00 | 106.00 | a | 99.00 | 103.00 | b | 92.00 | 77.00 | a | 64.00 | a | 106.00 | j | ||||||
1984 | 67.00 | c | 73.00 | b | 78.00 | b | 89.00 | a | 101.00 | 104.00 | d | 107.00 | d | 99.00 | d | 99.00 | c | 87.00 | a | 80.00 | b | 66.00 | a | ----- | z | |
1985 | 68.00 | 74.00 | a | 75.00 | c | 88.00 | a | 91.00 | c | 105.00 | b | 107.00 | 106.00 | a | 97.00 | 89.00 | 79.00 | 70.00 | d | 107.00 | o | |||||
1986 | 73.00 | 83.00 | b | 84.00 | c | 88.00 | 96.00 | c | 106.00 | a | 103.00 | b | 102.00 | b | 100.00 | a | 87.00 | d | 75.00 | c | 68.00 | b | 106.00 | w | ||
1987 | 70.00 | a | 70.00 | a | 75.00 | 88.00 | b | 91.00 | a | 102.00 | c | 105.00 | 99.00 | 95.00 | 93.00 | a | 79.00 | c | 70.00 | d | 105.00 | p | ||||
1988 | 71.00 | 74.00 | 87.00 | a | 86.00 | 93.00 | b | 106.00 | b | 104.00 | 100.00 | a | 95.00 | b | 92.00 | 84.00 | b | 70.00 | i | 106.00 | s | |||||
1989 | 68.00 | b | 82.00 | e | 87.00 | e | 93.00 | c | 99.00 | 106.00 | 108.00 | b | 102.00 | c | 98.00 | e | 91.00 | 82.00 | a | 75.00 | r | ----- | z | |||
1990 | 73.00 | c | 75.00 | a | 83.00 | e | 89.00 | e | 92.00 | a | 110.00 | 105.00 | c | 100.00 | a | 101.00 | 88.00 | b | 80.00 | 69.00 | d | 110.00 | y | |||
1991 | 65.00 | c | 76.00 | f | 72.00 | g | 84.00 | c | 90.00 | d | 98.00 | b | 104.00 | f | 101.00 | 100.00 | e | 94.00 | a | 83.00 | d | 67.00 | d | ----- | z | |
1992 | 58.00 | s | 71.00 | l | 72.00 | k | 94.00 | h | 94.00 | f | 96.00 | f | 99.00 | b | 104.00 | a | 98.00 | 88.00 | a | 74.00 | 63.00 | a | ----- | z | ||
1993 | 65.00 | b | 65.00 | 80.00 | a | 85.00 | b | 94.00 | 104.00 | 101.00 | d | 103.00 | q | 97.00 | o | 91.00 | i | 75.00 | j | 68.00 | l | ----- | z | |||
1994 | 76.00 | e | 75.00 | e | 80.00 | h | 91.00 | f | 105.00 | m | 111.00 | g | 104.00 | d | 105.00 | 98.00 | 88.00 | 79.00 | 70.00 | i | ----- | z | ||||
1995 | 62.00 | h | 77.00 | f | 78.00 | o | 81.00 | k | 91.00 | g | 100.00 | f | 108.00 | e | 104.00 | d | 101.00 | g | 95.00 | h | 81.00 | j | 72.00 | p | ----- | z |
1996 | 75.00 | g | 80.00 | b | 79.00 | s | 95.00 | f | 100.00 | r | 102.00 | r | 106.00 | h | 105.00 | l | 99.00 | f | 95.00 | g | 81.00 | l | 70.00 | j | ----- | z |
1997 | 72.00 | i | 83.00 | n | 85.00 | h | 86.00 | l | 97.00 | t | 105.00 | q | 104.00 | l | 102.00 | w | 92.00 | y | 98.00 | n | 83.00 | o | 65.00 | n | ----- | z |
1998 | 69.00 | m | 69.00 | h | 81.00 | k | 67.00 | u | 88.00 | m | 94.00 | s | ----- | z | ----- | z | ----- | z | 90.00 | v | 79.00 | n | 64.00 | q | ----- | z |
1999 | 65.00 | n | 64.00 | n | 71.00 | q | 74.00 | u | 84.00 | s | 93.00 | q | 87.00 | s | 92.00 | t | 89.00 | v | 80.00 | y | 77.00 | s | 64.00 | q | ----- | z |
2000 | 69.00 | v | 67.00 | n | 70.00 | r | 82.00 | t | 97.00 | s | 99.00 | r | ----- | z | ----- | z | 102.00 | l | 95.00 | h | 69.00 | j | 72.00 | m | ----- | z |
2001 | 72.00 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | 89.00 | b | 96.00 | 107.00 | 110.00 | 111.00 | 110.00 | n | 105.00 | 90.00 | 76.00 | 66.00 | ----- | z | ||||||||
2003 | 79.00 | 76.00 | 81.00 | ----- | z | ----- | z | 106.00 | 109.00 | o | 107.00 | 101.00 | e | 98.00 | j | 76.00 | 71.00 | ----- | z | |||||||
2004 | 71.00 | 74.00 | a | 92.00 | 91.00 | a | 99.00 | 105.00 | 108.00 | 106.00 | 104.00 | 90.00 | a | 79.00 | 70.00 | 108.00 | c | |||||||||
2005 | 75.00 | 68.00 | 81.00 | 86.00 | 104.00 | 108.00 | 114.00 | 104.00 | 99.00 | 93.00 | 82.00 | 74.00 | 114.00 | |||||||||||||
2006 | 75.00 | 78.00 | 76.00 | e | 92.00 | 101.00 | d | 110.00 | 112.00 | 101.00 | 99.00 | 94.00 | 86.00 | a | 72.00 | 112.00 | j | |||||||||
2007 | 70.00 | b | 73.00 | 93.00 | 97.00 | h | 99.00 | d | 107.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 69.68 | 74.18 | 79.87 | 87.14 | 95.33 | 105.11 | 106.08 | 102.18 | 99.00 | 90.14 | 77.81 | 69.06 | 108.17 | |||||||||||||
S.D. | 4.26 | 4.50 | 5.83 | 3.98 | 4.55 | 3.42 | 2.98 | 2.73 | 3.11 | 3.56 | 4.20 | 4.11 | 2.62 | |||||||||||||
SKEW | 0.36 | 0.00 | 0.02 | -0.08 | 0.51 | -0.64 | 0.23 | 0.15 | 0.25 | -0.03 | -0.08 | 0.01 | 0.32 | |||||||||||||
MAX | 81.00 | 83.00 | 93.00 | 96.00 | 107.00 | 110.00 | 114.00 | 107.00 | 106.00 | 97.00 | 86.00 | 78.00 | 114.00 | |||||||||||||
MIN | 59.00 | 65.00 | 65.00 | 78.00 | 88.00 | 96.00 | 99.00 | 98.00 | 93.00 | 82.00 | 68.00 | 61.00 | 103.00 | |||||||||||||
YRS | 37 | 38 | 39 | 35 | 36 | 36 | 37 | 39 | 38 | 36 | 37 | 34 | 12 |