YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1933 | 70.86 | c | 71.18 | 70.61 | 71.70 | 73.53 | 75.58 | 76.44 | 76.79 | 77.62 | 76.31 | 73.77 | 73.73 | 74.01 | ||||||||||||
1934 | 72.45 | a | 72.09 | 72.16 | 70.96 | b | 73.95 | 76.38 | 77.07 | i | 78.48 | 78.78 | 77.23 | 76.69 | d | 73.79 | 74.82 | a | ||||||||
1935 | ----- | z | 70.72 | a | 71.31 | 70.42 | 75.24 | 76.59 | a | 78.00 | 78.74 | 79.83 | 75.39 | c | 73.11 | b | 72.93 | p | 74.93 | b | ||||||
1936 | 72.22 | k | 70.83 | 69.28 | d | 69.46 | g | 69.96 | g | ----- | z | 75.21 | 76.39 | 75.43 | h | 75.84 | 73.45 | 69.35 | 72.91 | e | ||||||
1937 | 68.37 | a | 68.85 | o | 67.67 | e | 70.96 | b | 73.65 | 76.38 | 77.02 | a | 76.71 | 76.77 | s | 77.53 | 74.78 | 73.45 | 73.65 | b | ||||||
1938 | 72.52 | a | 74.52 | a | 72.95 | 73.40 | 73.85 | 75.45 | 77.03 | 77.57 | b | 77.72 | 77.15 | ----- | z | 73.53 | 75.06 | a | ||||||||
1939 | 71.45 | b | 72.05 | 71.58 | 71.74 | a | 72.44 | w | 75.97 | 78.52 | ----- | z | ----- | z | 74.79 | x | 72.90 | 71.98 | d | 73.27 | d | |||||
1940 | 71.89 | 71.38 | 72.75 | u | 73.90 | a | 74.76 | 77.00 | a | 79.06 | 78.56 | 77.67 | 76.89 | m | 75.27 | 72.77 | 75.23 | b | ||||||||
1941 | 71.74 | 69.34 | 70.17 | a | 72.69 | a | 73.40 | 75.68 | 76.78 | a | 77.92 | 78.38 | a | 76.80 | a | 73.79 | b | 70.77 | 73.96 | |||||||
1942 | 70.21 | 70.75 | 68.02 | 70.50 | 73.68 | 73.43 | 77.27 | 78.10 | 78.38 | 77.02 | 75.35 | 73.35 | 73.84 | |||||||||||||
1943 | 71.82 | 71.00 | c | 69.81 | 72.95 | 74.24 | 77.00 | 78.03 | 78.55 | 78.41 | a | 77.23 | 74.97 | 72.54 | d | 74.71 | ||||||||||
1944 | 71.24 | 71.08 | e | 71.85 | 73.40 | 74.69 | b | 75.88 | 77.45 | a | 77.95 | b | 77.60 | 75.92 | a | 73.82 | 71.74 | 74.39 | ||||||||
1945 | 70.69 | 72.09 | 72.95 | 72.25 | b | 74.92 | e | 77.40 | 77.79 | 78.79 | 77.93 | 77.47 | 75.27 | 71.84 | 74.95 | |||||||||||
1946 | 71.85 | 72.09 | 73.34 | 72.62 | 74.16 | 77.20 | 77.21 | 78.58 | 78.03 | 76.85 | 73.93 | 70.79 | 74.72 | |||||||||||||
1947 | 68.77 | 70.32 | 71.58 | 73.18 | 73.55 | 77.15 | 78.39 | 79.34 | 77.70 | 76.87 | 74.38 | a | 71.91 | c | 74.43 | |||||||||||
1948 | 68.95 | b | 69.47 | 70.62 | a | 71.98 | a | 74.65 | a | 77.13 | 77.97 | 78.74 | 78.25 | 75.21 | ----- | z | ----- | z | 74.30 | b | ||||||
1949 | 71.12 | b | 71.27 | 71.73 | 72.71 | a | 75.05 | 76.33 | 77.65 | 78.45 | 78.86 | p | 76.90 | 73.43 | 72.58 | 74.29 | a | |||||||||
1950 | 71.42 | 72.89 | 72.32 | 72.90 | 74.66 | o | 75.80 | 77.31 | 77.95 | a | 78.00 | 78.08 | a | 74.30 | 70.98 | 74.72 | a | |||||||||
1951 | 72.18 | c | 72.04 | c | 73.54 | c | 73.46 | b | 75.21 | e | 76.83 | d | 77.97 | l | 77.96 | r | 78.29 | k | 76.73 | g | 74.52 | h | 73.36 | b | 73.80 | e |
1952 | 71.91 | b | 71.96 | c | 71.94 | 72.72 | 73.70 | a | 76.71 | a | 77.87 | a | 78.26 | 77.80 | b | 76.53 | b | 75.02 | b | 72.44 | 74.74 | |||||
1953 | 72.55 | 72.71 | 73.16 | 74.40 | 74.06 | o | 76.85 | f | 77.63 | 78.13 | 78.23 | 77.92 | ----- | z | ----- | z | 75.59 | d | ||||||||
1954 | 71.19 | e | 72.43 | 71.18 | c | 73.10 | 73.85 | a | ----- | z | 75.92 | 77.33 | y | 78.50 | j | 77.10 | 75.83 | 71.98 | 73.62 | c | ||||||
1955 | 72.06 | 71.98 | 71.42 | 72.88 | 74.40 | 75.57 | 76.31 | 75.87 | 76.47 | 76.71 | ----- | z | 73.66 | 74.30 | a | |||||||||||
1956 | 74.31 | 71.47 | 72.71 | 73.03 | 74.42 | 75.02 | 76.56 | 77.81 | 77.95 | 76.65 | 74.55 | 71.87 | 74.69 | |||||||||||||
1957 | 71.85 | a | 69.34 | ----- | z | 70.95 | 72.45 | 75.63 | 76.82 | 76.77 | 76.82 | 76.06 | f | 73.82 | 71.10 | b | 73.56 | b | ||||||||
1958 | 69.06 | f | 69.39 | 68.08 | 70.18 | 70.52 | 72.33 | i | 73.00 | h | 74.16 | 75.10 | 72.77 | a | 72.38 | v | 68.08 | g | 71.46 | e | ||||||
1959 | 68.15 | 66.20 | 69.13 | e | 71.42 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.72 | h | |||
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 | ----- | 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 | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | 72.34 | i | 73.27 | 74.42 | 76.16 | 77.80 | 78.26 | 79.02 | 79.33 | 78.24 | 76.72 | 73.35 | 76.66 | b | ||||||||||
2000 | 71.27 | 72.34 | a | 74.85 | k | 73.52 | 76.31 | 79.25 | 80.24 | 79.50 | 79.13 | 79.68 | 77.40 | 74.69 | 76.67 | a | ||||||||||
2001 | 74.35 | a | 75.40 | w | 74.53 | a | 74.62 | 75.86 | t | 78.56 | c | 79.97 | 80.19 | 80.67 | i | 78.65 | a | 76.83 | 75.12 | c | 76.98 | c | ||||
2002 | 72.44 | f | 71.91 | 72.39 | 75.42 | 76.74 | 77.27 | q | ----- | z | 82.30 | k | 82.23 | 76.90 | a | 74.18 | 73.77 | 75.44 | d | |||||||
2003 | 69.27 | t | 71.95 | 73.56 | 75.50 | 77.06 | 78.27 | 80.14 | t | 81.39 | q | 80.62 | n | 79.35 | k | 77.50 | l | 73.67 | h | 75.27 | g | |||||
2004 | 71.78 | k | 73.97 | k | 72.35 | h | 73.26 | i | 74.00 | l | 78.20 | j | 79.69 | j | ----- | z | 78.68 | k | 78.50 | k | 76.81 | n | 74.02 | h | ----- | z |
2005 | 71.94 | v | 73.62 | x | ----- | z | 76.56 | n | 78.50 | j | 79.40 | i | 79.92 | l | 81.07 | i | 81.20 | j | 78.90 | j | 77.85 | j | 74.67 | j | ----- | z |
2006 | 74.03 | l | 71.47 | i | 74.41 | i | 74.29 | k | 74.39 | i | 79.08 | j | 82.05 | k | 81.36 | x | 81.38 | v | ----- | z | ----- | z | ----- | z | ----- | z |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2020 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 71.35 | 71.27 | 71.48 | 72.71 | 74.39 | 76.54 | 77.57 | 77.97 | 78.15 | 76.88 | 74.73 | 72.56 | 74.44 | |||||||||||||
S.D. | 1.52 | 1.52 | 1.79 | 1.40 | 1.35 | 1.21 | 1.13 | 1.26 | 1.31 | 1.28 | 1.25 | 1.33 | 0.39 | |||||||||||||
SKEW | -0.39 | -1.14 | -0.59 | 0.04 | -0.38 | -0.04 | 0.43 | -1.09 | 0.82 | -0.91 | 0.61 | -0.28 | -0.42 | |||||||||||||
MAX | 74.35 | 74.52 | 74.53 | 75.50 | 77.06 | 79.25 | 80.24 | 80.19 | 82.23 | 79.68 | 77.40 | 75.12 | 74.95 | |||||||||||||
MIN | 68.15 | 66.20 | 67.67 | 70.18 | 70.52 | 73.43 | 75.21 | 74.16 | 75.10 | 72.77 | 72.90 | 69.35 | 73.84 | |||||||||||||
YRS | 26 | 29 | 29 | 31 | 26 | 26 | 26 | 26 | 23 | 26 | 24 | 26 | 10 |