YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 99.00 | 85.00 | 79.00 | ----- | z | |||
1954 | 76.00 | 80.00 | 80.00 | a | 91.00 | 93.00 | 106.00 | 105.00 | 102.00 | 102.00 | 93.00 | 83.00 | 82.00 | 106.00 | a | |||||||||||
1955 | 71.00 | 79.00 | 81.00 | 88.00 | 96.00 | 106.00 | 102.00 | 97.00 | 102.00 | 98.00 | 81.00 | 75.00 | 106.00 | |||||||||||||
1956 | 74.00 | 74.00 | 88.00 | 87.00 | 100.00 | 106.00 | 105.00 | 102.00 | 103.00 | 94.00 | 81.00 | 75.00 | 106.00 | |||||||||||||
1957 | 70.00 | 85.00 | 80.00 | 82.00 | 92.00 | 107.00 | 105.00 | 106.00 | 99.00 | 95.00 | 73.00 | 73.00 | 107.00 | |||||||||||||
1958 | 68.00 | 79.00 | 74.00 | 90.00 | 104.00 | 104.00 | 111.00 | 102.00 | 101.00 | 91.00 | 82.00 | 79.00 | 111.00 | |||||||||||||
1959 | 77.00 | 73.00 | 79.00 | 93.00 | 96.00 | 105.00 | 105.00 | 100.00 | 98.00 | 96.00 | 75.00 | 74.00 | 105.00 | |||||||||||||
1960 | 69.00 | 69.00 | 85.00 | 88.00 | 102.00 | 108.00 | 106.00 | 103.00 | 99.00 | 92.00 | 81.00 | 73.00 | 108.00 | |||||||||||||
1961 | 72.00 | 79.00 | 82.00 | 89.00 | 95.00 | 106.00 | 105.00 | 101.00 | 94.00 | 92.00 | 75.00 | 74.00 | 106.00 | |||||||||||||
1962 | 71.00 | 80.00 | 85.00 | 94.00 | 94.00 | 106.00 | 101.00 | 106.00 | 102.00 | 92.00 | 85.00 | 74.00 | 106.00 | |||||||||||||
1963 | 72.00 | 87.00 | 80.00 | 90.00 | 97.00 | 99.00 | 104.00 | 99.00 | 98.00 | 96.00 | 81.00 | 71.00 | 104.00 | |||||||||||||
1964 | 72.00 | 74.00 | 85.00 | 90.00 | 97.00 | 104.00 | 104.00 | 104.00 | 100.00 | 96.00 | 82.00 | 75.00 | 104.00 | |||||||||||||
1965 | 71.00 | 78.00 | 79.00 | 93.00 | 97.00 | 100.00 | 106.00 | 104.00 | 96.00 | 94.00 | 83.00 | 76.00 | 106.00 | |||||||||||||
1966 | 71.00 | 68.00 | 82.00 | 84.00 | 94.00 | 105.00 | 104.00 | 101.00 | 99.00 | 89.00 | 84.00 | 77.00 | 105.00 | |||||||||||||
1967 | 76.00 | 78.00 | 85.00 | 83.00 | 98.00 | 100.00 | 104.00 | 103.00 | 96.00 | 93.00 | 86.00 | 66.00 | 104.00 | |||||||||||||
1968 | 70.00 | 79.00 | 84.00 | 85.00 | 98.00 | 107.00 | 102.00 | 96.00 | 96.00 | 91.00 | 79.00 | 74.00 | 107.00 | |||||||||||||
1969 | 75.00 | 72.00 | 89.00 | 91.00 | 100.00 | 109.00 | 105.00 | 106.00 | 101.00 | 99.00 | 80.00 | 80.00 | 109.00 | |||||||||||||
1970 | 76.00 | 78.00 | 77.00 | 84.00 | 104.00 | 111.00 | 106.00 | 104.00 | 102.00 | 89.00 | 81.00 | 78.00 | 111.00 | |||||||||||||
1971 | 81.00 | 81.00 | 89.00 | 89.00 | 92.00 | 105.00 | 106.00 | 100.00 | 103.00 | 88.00 | 82.00 | 74.00 | a | 106.00 | a | |||||||||||
1972 | 73.00 | 82.00 | 90.00 | 91.00 | 96.00 | 104.00 | 108.00 | 109.00 | 98.00 | 97.00 | 76.00 | a | 71.00 | 109.00 | a | |||||||||||
1973 | 72.00 | 73.00 | 73.00 | 88.00 | 96.00 | 108.00 | 108.00 | 103.00 | 97.00 | 94.00 | 89.00 | 77.00 | 108.00 | |||||||||||||
1974 | 77.00 | 79.00 | 84.00 | 87.00 | 104.00 | 111.00 | 108.00 | 102.00 | 102.00 | 94.00 | 77.00 | 71.00 | 111.00 | |||||||||||||
1975 | 73.00 | a | 74.00 | 80.00 | 83.00 | 97.00 | 100.00 | 104.00 | 107.00 | 103.00 | 95.00 | d | 87.00 | 75.00 | 107.00 | e | ||||||||||
1976 | 75.00 | a | 79.00 | 83.00 | 85.00 | 96.00 | 108.00 | 105.00 | 101.00 | 100.00 | 92.00 | 84.00 | 71.00 | 108.00 | a | |||||||||||
1977 | 62.00 | 82.00 | 82.00 | 89.00 | a | 96.00 | 105.00 | 104.00 | 104.00 | 100.00 | 96.00 | 81.00 | a | 79.00 | 105.00 | b | ||||||||||
1978 | 73.00 | 73.00 | 81.00 | 84.00 | 100.00 | d | 106.00 | 107.00 | c | 101.00 | c | 100.00 | d | 99.00 | b | 81.00 | d | 77.00 | c | 107.00 | w | |||||
1979 | 67.00 | b | 78.00 | a | 78.00 | o | 86.00 | f | 96.00 | a | 109.00 | a | 107.00 | 101.00 | a | 105.00 | 97.00 | a | 78.00 | 78.00 | d | ----- | z | |||
1980 | 76.00 | 81.00 | a | 74.00 | f | 93.00 | g | 95.00 | j | 108.00 | h | ----- | z | 104.00 | f | 101.00 | e | 102.00 | b | 88.00 | l | 83.00 | l | ----- | z | |
1981 | 77.00 | h | 84.00 | d | 81.00 | f | 96.00 | b | 90.00 | 106.00 | 105.00 | b | 105.00 | a | 99.00 | b | 91.00 | c | 84.00 | d | 79.00 | f | ----- | z | ||
1982 | 78.00 | f | 81.00 | b | 77.00 | b | 89.00 | c | 92.00 | g | 102.00 | d | 105.00 | h | 103.00 | 104.00 | c | 91.00 | 78.00 | c | 73.00 | b | ----- | z | ||
1983 | 73.00 | d | 76.00 | 80.00 | 84.00 | 102.00 | 99.00 | 109.00 | 101.00 | 103.00 | 86.00 | 80.00 | 71.00 | 109.00 | d | |||||||||||
1984 | 75.00 | 74.00 | 84.00 | 90.00 | 101.00 | 101.00 | 103.00 | c | 105.00 | i | 100.00 | a | 86.00 | 80.00 | j | 66.00 | c | ----- | z | |||||||
1985 | 67.00 | 77.00 | b | 81.00 | 90.00 | b | 93.00 | d | 108.00 | c | 107.00 | c | 110.00 | 96.00 | b | 90.00 | 83.00 | 73.00 | 110.00 | p | ||||||
1986 | 78.00 | 85.00 | a | 88.00 | 89.00 | a | 96.00 | a | 104.00 | 98.00 | 107.00 | 101.00 | c | 87.00 | c | 83.00 | 80.00 | 107.00 | i | |||||||
1987 | 77.00 | a | 74.00 | a | 79.00 | 76.00 | e | 92.00 | b | 103.00 | c | 104.00 | a | 101.00 | a | 101.00 | 96.00 | a | 78.00 | c | 76.00 | a | 104.00 | s | ||
1988 | 64.00 | 78.00 | 91.00 | 89.00 | c | 98.00 | 108.00 | 103.00 | b | 104.00 | 99.00 | a | 96.00 | b | 88.00 | a | 72.00 | 108.00 | i | |||||||
1989 | 71.00 | a | 82.00 | 91.00 | 96.00 | 99.00 | a | 105.00 | 108.00 | a | 100.00 | b | 98.00 | 94.00 | a | 84.00 | 73.00 | a | 108.00 | g | ||||||
1990 | 77.00 | a | 79.00 | 84.00 | a | 89.00 | a | 95.00 | 111.00 | 105.00 | 103.00 | 102.00 | 91.00 | 86.00 | b | 73.00 | 111.00 | e | ||||||||
1991 | 66.00 | 79.00 | 75.00 | 85.00 | 92.00 | 103.00 | 102.00 | 101.00 | a | 98.00 | 96.00 | 81.00 | 69.00 | 103.00 | a | |||||||||||
1992 | 71.00 | 74.00 | 78.00 | 94.00 | 93.00 | 101.00 | a | 103.00 | a | 102.00 | 98.00 | 94.00 | 78.00 | a | 68.00 | 103.00 | c | |||||||||
1993 | 68.00 | 70.00 | 80.00 | 90.00 | 96.00 | 106.00 | a | 102.00 | 105.00 | m | 98.00 | i | 96.00 | 79.00 | a | 74.00 | a | 106.00 | y | |||||||
1994 | 75.00 | 76.00 | 81.00 | 92.00 | c | 99.00 | 109.00 | e | 107.00 | 104.00 | 100.00 | 86.00 | c | 79.00 | a | 71.00 | 109.00 | l | ||||||||
1995 | 69.00 | 79.00 | 81.00 | 85.00 | j | 89.00 | b | 103.00 | a | 112.00 | a | 107.00 | b | 105.00 | 95.00 | a | 83.00 | 75.00 | 112.00 | q | ||||||
1996 | 75.00 | 79.00 | 82.00 | 92.00 | a | 102.00 | 104.00 | 104.00 | b | ----- | z | 92.00 | t | 96.00 | a | 84.00 | 76.00 | c | ----- | z | ||||||
1997 | 70.00 | c | 72.00 | 89.00 | a | 85.00 | a | 98.00 | a | 101.00 | 104.00 | a | 103.00 | 102.00 | ----- | z | 83.00 | 68.00 | b | ----- | z | |||||
1998 | 72.00 | e | 70.00 | e | 83.00 | a | 91.00 | a | ----- | z | ----- | z | 111.00 | e | 107.00 | c | 103.00 | a | 96.00 | 83.00 | a | 77.00 | a | ----- | z | |
1999 | 76.00 | 78.00 | 85.00 | 90.00 | 99.00 | 102.00 | 104.00 | a | 104.00 | 100.00 | 97.00 | 89.00 | 77.00 | 104.00 | a | |||||||||||
2000 | 81.00 | 80.00 | 79.00 | b | 96.00 | 105.00 | 105.00 | 106.00 | 105.00 | b | 106.00 | 99.00 | 74.00 | a | 74.00 | a | 106.00 | f | ||||||||
2001 | 71.00 | a | 76.00 | 83.00 | 91.00 | 100.00 | 105.00 | 108.00 | 105.00 | a | 102.00 | 92.00 | c | 87.00 | 73.00 | 108.00 | e | |||||||||
2002 | 77.00 | 80.00 | 83.00 | a | 93.00 | 103.00 | 106.00 | a | 105.00 | 104.00 | 103.00 | 91.00 | 82.00 | a | 68.00 | 106.00 | c | |||||||||
2003 | 79.00 | 80.00 | b | 82.00 | a | 85.00 | 102.00 | 105.00 | 109.00 | 109.00 | 101.00 | 101.00 | 79.00 | 80.00 | a | 109.00 | d | |||||||||
2004 | 72.00 | 79.00 | i | 89.00 | 89.00 | b | 96.00 | b | 103.00 | a | 105.00 | b | 105.00 | a | 101.00 | e | 91.00 | d | 79.00 | a | 75.00 | d | ----- | z | ||
2005 | 75.00 | h | 67.00 | a | 80.00 | d | 89.00 | a | 103.00 | a | ----- | z | 108.00 | a | 103.00 | c | 100.00 | c | 93.00 | a | 86.00 | b | 77.00 | h | ----- | z |
2006 | 76.00 | g | 78.00 | c | 79.00 | a | 90.00 | a | 97.00 | 105.00 | 111.00 | 100.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 72.73 | 77.35 | 82.42 | 88.76 | 97.40 | 105.00 | 105.49 | 103.20 | 100.38 | 93.73 | 81.61 | 74.20 | 106.62 | |||||||||||||
S.D. | 4.08 | 4.39 | 4.26 | 3.96 | 3.89 | 3.04 | 2.74 | 2.92 | 2.58 | 3.77 | 3.74 | 3.69 | 2.32 | |||||||||||||
SKEW | -0.27 | -0.33 | 0.19 | -0.56 | 0.05 | -0.07 | 0.21 | 0.09 | -0.20 | -0.17 | -0.16 | -0.22 | 0.38 | |||||||||||||
MAX | 81.00 | 87.00 | 91.00 | 96.00 | 105.00 | 111.00 | 112.00 | 110.00 | 106.00 | 102.00 | 89.00 | 82.00 | 111.00 | |||||||||||||
MIN | 62.00 | 67.00 | 73.00 | 76.00 | 89.00 | 99.00 | 98.00 | 96.00 | 94.00 | 86.00 | 73.00 | 66.00 | 103.00 | |||||||||||||
YRS | 49 | 52 | 50 | 50 | 50 | 50 | 51 | 49 | 50 | 52 | 51 | 50 | 29 |