YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1914 | ----- | z | ----- | z | ----- | z | 65.27 | 78.39 | 82.00 | 93.55 | 94.81 | 79.37 | 71.55 | 61.03 | 44.87 | 74.54 | c | |||||||||
1915 | 46.87 | 49.93 | 62.61 | 68.93 | 68.39 | 81.97 | 87.68 | 90.42 | 81.83 | 73.71 | 58.33 | 47.94 | 68.22 | |||||||||||||
1916 | 41.45 | 54.24 | 61.84 | 67.90 | 70.10 | a | 79.87 | 85.23 | 86.73 | a | 82.23 | 71.23 | a | 58.23 | ----- | z | 69.01 | a | ||||||||
1917 | 45.74 | 52.50 | 54.55 | 63.59 | a | 68.39 | 86.80 | 94.13 | 93.45 | 84.83 | 81.45 | 60.37 | 54.77 | 70.05 | ||||||||||||
1918 | 53.35 | 53.04 | 58.26 | 69.00 | 74.48 | 93.03 | 89.33 | a | 89.84 | f | 82.17 | 71.60 | f | 57.17 | 49.46 | c | 67.93 | b | ||||||||
1919 | 52.97 | 50.04 | 59.37 | a | 69.57 | ----- | z | 72.67 | 93.58 | 92.29 | 75.89 | k | 70.87 | 61.32 | b | 47.26 | 66.99 | b | ||||||||
1920 | 59.06 | 61.03 | 56.29 | 66.67 | 77.19 | 83.20 | 88.61 | 96.90 | 83.00 | 66.19 | 58.67 | 46.03 | 70.24 | |||||||||||||
1921 | 49.77 | 57.64 | 63.52 | 64.73 | 73.71 | 84.00 | 96.39 | 100.22 | v | ----- | z | ----- | z | 65.13 | 51.16 | 67.34 | c | |||||||||
1922 | 51.03 | 50.89 | 56.87 | 66.97 | 76.71 | 90.07 | 96.70 | a | 88.71 | 88.97 | 71.74 | 61.10 | 48.23 | 70.67 | ||||||||||||
1923 | 50.39 | 62.93 | 66.87 | 67.60 | 76.42 | 78.23 | 94.32 | 90.71 | 85.23 | 72.45 | 66.00 | 47.39 | 71.55 | |||||||||||||
1924 | 53.06 | 64.72 | 65.10 | 79.33 | 89.61 | 86.77 | 93.74 | 91.55 | 85.33 | 70.26 | 60.50 | 45.32 | 73.78 | |||||||||||||
1925 | 49.84 | 51.14 | 65.94 | 67.57 | 74.35 | 85.07 | 94.52 | 88.48 | 73.07 | 73.55 | 57.50 | 54.68 | 69.64 | |||||||||||||
1926 | 51.55 | 52.46 | 72.92 | f | ----- | z | 74.61 | 92.93 | 94.26 | 90.73 | a | 84.10 | 75.48 | 64.70 | 51.90 | 73.27 | b | |||||||||
1927 | 50.42 | 52.68 | 58.48 | 66.23 | 74.38 | b | 85.10 | 96.23 | a | 93.48 | 81.10 | 76.19 | 60.50 | 50.74 | 70.46 | |||||||||||
1928 | 52.13 | 61.07 | 61.94 | 64.57 | 87.37 | a | 83.77 | 97.32 | 95.32 | 86.67 | 75.32 | 59.14 | a | 50.40 | a | 72.92 | ||||||||||
1929 | 50.97 | 56.86 | 64.03 | 62.07 | 80.19 | 80.57 | 94.23 | 96.81 | 87.87 | 82.58 | 73.72 | a | 57.29 | 73.93 | ||||||||||||
1930 | 47.32 | 61.04 | 66.94 | 69.80 | 73.57 | a | 88.37 | 96.10 | 93.45 | 82.53 | 76.45 | 65.37 | 54.45 | 72.95 | ||||||||||||
1931 | 51.81 | 59.14 | 64.71 | 75.93 | 84.93 | a | 79.27 | 97.35 | 96.00 | 82.37 | 74.23 | ----- | z | ----- | z | 76.57 | b | |||||||||
1932 | 44.71 | 53.48 | 60.52 | 60.59 | a | 69.26 | 86.37 | 86.77 | ----- | z | 91.63 | 75.19 | 66.63 | 47.26 | 67.49 | a | ||||||||||
1933 | 45.03 | 52.71 | 57.84 | 73.93 | 65.61 | 79.77 | 93.39 | 93.81 | 78.33 | 82.00 | 66.20 | 48.65 | 69.77 | |||||||||||||
1934 | 54.19 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.19 | k | |
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 | ----- | 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 | 50.95 | k | ----- | z |
1976 | 55.10 | k | 57.11 | j | ----- | 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 | 55.70 | j | ----- | z | ----- | z |
1980 | 51.43 | j | ----- | z | ----- | z | ----- | z | 73.84 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.04 | d | ----- | z | ----- | z | ----- | z | 86.04 | k |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.00 | f | ----- | z |
1996 | 50.53 | a | 56.52 | b | 64.64 | c | 66.28 | a | 72.71 | 83.83 | a | 97.96 | c | 96.80 | f | 87.14 | h | 75.32 | f | 59.25 | b | 49.14 | b | 66.76 | c | |
1997 | 48.79 | c | 58.83 | e | 65.04 | e | 66.44 | e | 80.79 | c | 81.27 | h | 92.07 | c | 92.37 | d | 86.58 | f | 71.05 | i | 57.84 | e | 50.64 | c | 68.09 | c |
1998 | 47.56 | f | 48.27 | f | 60.75 | g | 63.96 | d | 63.48 | h | 80.96 | g | 92.88 | e | 95.76 | f | 89.73 | h | 71.00 | g | 52.60 | e | 46.55 | i | 69.82 | i |
1999 | 54.00 | h | 45.82 | f | 52.96 | h | 66.76 | i | 74.19 | j | 82.96 | f | 91.67 | j | 87.84 | f | 89.40 | e | 80.67 | g | 57.08 | f | 52.04 | e | 70.72 | j |
2000 | 49.04 | e | 50.86 | g | 60.50 | g | 68.75 | j | 71.58 | l | 88.70 | g | 89.08 | f | 91.84 | f | 84.12 | d | 71.33 | g | 53.23 | d | 48.86 | b | 58.81 | h |
2001 | 51.32 | f | 50.60 | h | 62.96 | e | 62.73 | h | 83.04 | f | 82.27 | h | 91.09 | h | 93.61 | h | 88.42 | f | 77.52 | h | 54.27 | h | 45.19 | e | 54.08 | j |
2002 | 46.81 | j | 60.40 | h | 60.28 | f | 70.70 | j | 74.73 | i | 84.92 | f | 96.04 | f | 91.87 | 90.11 | k | 77.62 | g | 62.50 | j | 46.38 | g | 91.87 | k | |
2003 | 54.77 | 56.50 | 60.48 | 56.22 | c | 77.48 | f | 87.29 | i | 95.55 | 90.96 | h | 91.10 | a | 80.13 | 52.03 | a | 48.57 | a | 66.15 | c | |||||
2004 | 45.06 | 52.29 | a | 70.94 | 70.21 | a | 74.42 | 83.32 | k | 94.03 | a | 91.93 | b | 85.52 | e | 71.45 | 58.24 | e | 51.97 | a | 69.64 | a | ||||
2005 | 48.13 | 56.11 | 62.79 | b | 63.24 | i | 69.39 | h | 75.48 | g | 93.84 | f | 95.64 | c | 82.62 | q | 73.83 | g | 57.36 | e | 46.59 | n | 64.01 | g | ||
2006 | 48.50 | c | 59.57 | e | 51.94 | m | 55.08 | r | ----- | z | ----- | z | 96.62 | g | 92.45 | 87.07 | a | 74.36 | t | ----- | z | ----- | z | 71.90 | h | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 49.87 | 55.89 | 62.19 | 67.22 | 75.71 | 83.98 | 93.44 | 92.63 | 84.33 | 74.60 | 60.47 | 49.77 | 71.18 | |||||||||||||
S.D. | 3.71 | 4.26 | 3.92 | 4.80 | 6.09 | 4.90 | 3.42 | 2.70 | 4.17 | 4.31 | 4.84 | 3.25 | 1.83 | |||||||||||||
SKEW | 0.02 | 0.38 | -0.01 | 0.37 | 0.65 | -0.05 | -0.95 | -0.28 | -0.51 | 0.37 | 0.58 | 0.49 | 0.22 | |||||||||||||
MAX | 59.06 | 64.72 | 70.94 | 79.33 | 89.61 | 93.03 | 97.96 | 96.90 | 91.63 | 82.58 | 73.72 | 57.29 | 73.93 | |||||||||||||
MIN | 41.45 | 49.93 | 54.55 | 56.22 | 65.61 | 72.67 | 85.23 | 86.73 | 73.07 | 66.19 | 52.03 | 44.87 | 68.22 | |||||||||||||
YRS | 27 | 25 | 24 | 24 | 22 | 21 | 25 | 22 | 24 | 20 | 26 | 25 | 12 |