YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1936 | 54.16 | 53.19 | 55.34 | 56.56 | d | 61.98 | 66.02 | a | 70.46 | c | 68.42 | a | 66.17 | c | 62.85 | ----- | z | 55.74 | h | 61.52 | b | |||||
1937 | 45.03 | 51.02 | 54.27 | 57.16 | a | 60.98 | 63.63 | 67.50 | a | 66.92 | 67.43 | a | 62.75 | a | 56.88 | a | 57.77 | 59.28 | ||||||||
1938 | 55.58 | 53.54 | 54.71 | 57.50 | a | 58.52 | a | 62.74 | a | 65.38 | a | 68.94 | 68.38 | 61.55 | a | 57.27 | h | 56.86 | c | 60.34 | a | |||||
1939 | 51.71 | 49.52 | 51.69 | b | 58.02 | a | 59.15 | 63.71 | a | 66.73 | a | 66.97 | 70.83 | c | 64.76 | 59.64 | b | 55.52 | a | 59.85 | ||||||
1940 | 55.02 | 55.12 | 57.34 | 60.57 | b | 63.10 | a | 63.52 | a | 65.62 | a | 66.93 | a | 64.97 | 65.29 | c | 58.07 | c | 58.27 | c | 61.15 | |||||
1941 | 56.19 | 58.45 | 60.03 | 58.91 | a | 65.79 | 64.95 | 67.52 | 69.25 | a | 65.84 | b | 63.92 | 62.17 | 56.85 | a | 62.49 | |||||||||
1942 | 56.76 | 53.71 | 56.15 | 58.43 | 60.67 | b | 63.75 | 67.28 | a | 68.05 | b | 65.83 | a | 65.87 | 59.12 | 55.02 | a | 60.89 | ||||||||
1943 | 54.44 | 58.29 | 58.08 | 59.62 | 63.32 | 64.09 | a | 67.73 | 68.48 | b | 66.75 | 64.42 | 60.74 | a | 56.92 | a | 61.91 | |||||||||
1944 | 54.76 | 53.05 | 58.13 | 57.07 | b | 61.21 | 61.95 | 63.98 | c | 67.07 | a | 66.14 | a | 61.88 | b | 57.35 | 56.35 | 59.91 | ||||||||
1945 | 53.53 | 54.80 | 53.02 | b | 56.95 | 59.95 | 62.87 | 67.18 | 69.27 | c | 68.69 | f | 64.50 | c | 56.83 | c | 54.76 | b | 59.42 | a | ||||||
1946 | 54.33 | a | 51.46 | 55.35 | a | 58.76 | c | 59.88 | a | 65.02 | 67.69 | 68.10 | 68.43 | b | 61.55 | b | 56.76 | a | 54.32 | 60.14 | ||||||
1947 | 51.32 | 56.91 | 58.68 | 60.23 | 61.90 | 65.12 | 67.47 | 68.35 | 67.58 | 63.58 | a | 56.57 | 55.29 | 61.08 | ||||||||||||
1948 | 54.90 | 52.62 | 53.77 | 58.92 | 60.29 | 63.27 | 65.73 | 65.85 | 65.65 | 62.69 | 59.38 | 52.77 | 59.65 | |||||||||||||
1949 | 47.00 | 51.36 | 54.29 | 60.30 | 62.29 | 66.95 | 67.34 | 68.40 | 67.57 | 62.65 | 63.20 | 53.23 | 60.38 | |||||||||||||
1950 | 48.52 | 53.61 | 55.77 | 59.73 | 59.74 | 62.83 | 68.79 | 65.84 | 66.03 | 64.98 | 61.32 | 59.02 | 60.52 | |||||||||||||
1951 | 54.02 | 53.34 | 56.89 | 58.30 | 60.37 | 64.48 | 68.61 | 67.37 | 67.40 | 65.79 | 60.77 | 54.00 | 60.94 | |||||||||||||
1952 | 52.31 | 56.86 | 54.08 | 58.25 | 62.31 | 62.92 | 65.73 | 68.23 | 67.83 | 63.31 | 58.15 | 55.29 | 60.44 | |||||||||||||
1953 | 58.81 | 57.41 | 56.37 | 57.18 | 62.02 | 64.07 | 70.37 | 66.77 | 65.30 | 65.18 | 61.35 | 56.65 | 61.79 | |||||||||||||
1954 | 53.48 | 60.77 | 55.73 | 59.00 | 61.58 | 65.00 | 71.82 | 70.82 | 67.83 | 62.56 | 62.53 | 57.60 | 62.39 | |||||||||||||
1955 | 51.94 | 55.21 | 59.24 | 58.87 | 61.02 | 63.90 | 67.16 | 70.48 | 70.35 | 62.19 | 59.52 | 55.56 | 61.29 | |||||||||||||
1956 | 54.60 | 52.67 | 58.81 | 58.63 | 62.98 | 66.32 | 68.37 | 69.16 | 70.07 | 64.74 | 65.83 | 58.82 | 62.58 | |||||||||||||
1957 | 53.87 | 59.11 | 59.84 | 60.03 | 63.19 | 69.45 | 72.31 | 72.71 | 68.92 | 66.13 | 60.07 | 60.73 | 63.86 | |||||||||||||
1958 | 59.31 | 60.14 | 57.89 | 64.53 | 66.34 | 68.85 | 69.98 | 73.35 | 72.73 | 72.47 | 63.90 | 62.44 | 65.99 | |||||||||||||
1959 | 59.92 | 57.29 | 63.98 | 65.42 | 65.60 | 69.73 | 75.05 | 73.89 | 72.75 | 68.19 | 65.10 | 59.61 | 66.38 | |||||||||||||
1960 | 53.32 | 55.31 | 57.53 | 61.17 | 63.84 | 65.80 | 69.31 | 68.40 | 69.95 | 64.37 | 58.23 | 54.85 | 61.84 | |||||||||||||
1961 | 58.87 | 57.84 | 56.84 | 59.62 | 60.81 | 65.00 | 71.15 | 70.08 | 68.08 | 65.66 | 59.05 | 54.02 | 62.25 | |||||||||||||
1962 | 56.03 | 53.75 | 53.60 | 60.48 | 61.50 | 63.17 | 66.02 | 69.56 | 67.70 | 64.60 | 59.70 | 56.58 | 61.06 | |||||||||||||
1963 | 55.23 | 61.11 | 56.56 | 57.27 | 62.87 | 65.62 | 68.71 | 70.92 | 74.52 | 67.87 | 61.73 | 57.89 | 63.36 | |||||||||||||
1964 | 55.23 | 55.98 | 55.87 | 58.12 | 58.44 | 62.13 | 66.81 | 69.42 | 66.73 | 67.02 | 58.92 | 55.11 | 60.81 | |||||||||||||
1965 | 55.65 | 55.23 | 57.44 | 58.55 | 60.53 | 62.83 | 65.68 | 71.50 | 68.00 | 69.44 | 60.50 | 55.10 | 61.70 | |||||||||||||
1966 | 53.56 | 52.95 | 57.48 | 61.70 | 63.47 | 66.57 | 68.23 | 71.87 | 69.55 | 69.47 | 62.50 | 57.48 | 62.90 | |||||||||||||
1967 | 56.55 | 59.54 | 59.26 | 56.00 | 64.32 | 62.87 | 69.32 | 72.79 | 71.93 | 68.47 | 64.17 | 54.11 | 63.28 | |||||||||||||
1968 | 57.27 | 60.84 | 60.50 | 61.60 | 63.89 | 66.18 | 68.29 | 68.52 | 68.57 | 65.31 | 61.68 | 54.27 | 63.08 | |||||||||||||
1969 | 56.94 | 53.88 | 56.35 | 60.32 | 63.06 | 65.45 | 69.11 | 71.02 | 67.12 | 66.08 | 64.23 | 58.74 | 62.69 | |||||||||||||
1970 | 56.90 | 60.68 | 59.34 | 59.33 | 63.32 | 65.68 | 68.66 | 69.40 | 69.15 | 66.02 | 61.20 | 56.03 | 62.98 | |||||||||||||
1971 | 55.52 | 56.68 | 56.77 | 58.80 | 61.37 | 64.68 | 69.47 | 74.24 | 70.88 | 65.00 | 59.23 | 52.74 | 62.12 | |||||||||||||
1972 | 53.94 | 56.84 | 59.79 | 61.45 | 64.10 | 67.03 | 70.34 | 72.74 | 69.80 | 66.37 | 60.18 | 56.82 | 63.28 | |||||||||||||
1973 | 54.60 | 58.48 | 55.47 | 60.03 | 62.40 | 66.70 | 67.97 | 69.08 | 67.52 | 65.68 | 59.52 | 58.32 | 62.15 | |||||||||||||
1974 | 54.31 | 57.46 | 56.56 | 59.63 | 62.90 | 66.63 | 70.53 | 69.61 | 68.93 | 65.94 | 62.65 | 55.79 | 62.58 | |||||||||||||
1975 | 56.82 | 55.57 | 55.71 | 56.65 | 61.06 | 64.45 | 68.89 | 68.23 | 70.18 | 65.42 | 60.58 | 57.63 | 61.77 | |||||||||||||
1976 | 59.97 | 57.86 | 58.34 | 57.95 | 63.23 | 68.00 | 70.03 | 69.29 | 70.37 | 69.21 | 65.92 | 60.05 | 64.18 | |||||||||||||
1977 | 57.53 | 60.59 | 56.02 | 61.08 | 61.13 | 65.10 | 68.60 | 70.90 | 68.65 | 66.23 | 64.72 | 60.94 | 63.46 | |||||||||||||
1978 | 58.55 | 58.25 | 62.10 | 59.13 | 65.48 | 67.58 | 67.73 | 69.82 | 73.62 | 68.31 | 58.98 | 54.26 | 63.65 | |||||||||||||
1979 | 54.55 | 54.18 | 57.47 | 60.17 | 63.60 | 69.18 | 68.39 | 70.95 | 73.80 | 66.05 | 61.03 | 60.60 | 63.33 | |||||||||||||
1980 | 59.63 | 61.24 | 58.26 | 60.58 | 60.11 | 65.70 | 68.66 | 70.87 | 67.03 | 66.21 | 62.43 | 60.18 | 63.41 | |||||||||||||
1981 | 59.50 | 60.59 | 58.06 | 61.17 | 64.73 | 71.88 | 71.65 | 71.32 | 69.60 | 65.24 | 62.05 | 59.37 | 64.60 | |||||||||||||
1982 | 54.58 | 59.05 | 57.55 | 60.13 | 62.52 | 63.53 | 69.32 | 71.37 | 71.62 | 69.19 | 61.20 | 56.31 | 63.03 | |||||||||||||
1983 | 58.84 | 57.36 | 57.77 | 59.20 | 62.53 | 65.35 | 69.61 | 73.55 | 72.42 | 69.50 | 60.95 | 57.08 | 63.68 | |||||||||||||
1984 | 58.21 | 58.52 | 61.29 | 61.37 | 66.02 | 67.07 | 71.27 | 73.06 | 76.48 | 65.55 | 58.65 | 55.19 | 64.39 | |||||||||||||
1985 | 55.48 | 56.57 | 55.23 | 60.67 | 61.11 | 66.00 | 71.35 | 69.90 | 68.63 | 67.08 | 58.58 | 59.11 | 62.48 | |||||||||||||
1986 | 62.23 | 58.64 | 59.24 | 61.70 | 63.34 | 66.30 | 68.47 | 68.82 | 65.75 | 66.34 | 64.93 | 58.39 | 63.68 | |||||||||||||
1987 | 54.95 | 58.34 | 58.92 | 63.12 | 64.23 | 64.63 | 66.26 | 67.69 | 69.60 | 68.97 | 61.83 | 53.85 | 62.70 | |||||||||||||
1988 | 56.71 | 60.59 | 62.45 | 61.23 | 62.97 | 63.60 | 69.13 | 68.26 | 67.65 | 66.03 | 60.08 | 56.47 | 62.93 | |||||||||||||
1989 | 55.40 | 54.82 | 58.87 | 64.73 | 62.45 | 65.13 | 69.39 | 67.61 | 68.23 | 65.81 | 65.10 | 60.50 | 63.17 | |||||||||||||
1990 | 57.08 | 54.98 | 57.53 | 62.48 | 62.68 | 67.47 | 71.37 | 69.65 | 70.95 | 69.55 | 64.13 | 56.76 | 63.72 | |||||||||||||
1991 | 57.19 | 59.82 | 54.95 | 60.98 | 60.32 | 63.90 | 67.00 | 68.94 | 67.75 | 67.27 | 63.35 | 58.68 | 62.51 | |||||||||||||
1992 | 58.39 | 60.79 | 59.16 | 65.60 | 66.08 | 65.88 | 71.45 | 72.89 | 70.72 | 66.97 | 63.65 | 55.81 | 64.78 | |||||||||||||
1993 | 56.16 | 57.00 | 60.48 | 62.75 | 65.11 | 68.25 | 69.53 | 69.45 | 69.00 | 68.39 | 63.55 | 58.42 | 64.01 | |||||||||||||
1994 | 59.15 | 56.98 | 60.69 | 60.18 | 61.98 | 68.23 | 67.81 | 74.68 | 70.62 | 66.82 | 57.87 | 57.50 | 63.54 | |||||||||||||
1995 | 56.79 | 61.62 | 60.05 | 60.50 | 60.31 | 64.32 | 68.21 | 68.90 | 70.68 | 67.31 | 62.82 | 58.89 | 63.37 | |||||||||||||
1996 | 58.16 | 58.28 | 60.08 | 64.15 | 65.87 | 67.27 | 69.50 | 73.29 | 69.08 | 63.84 | 62.08 | 58.18 | 64.15 | |||||||||||||
1997 | 57.26 | 58.68 | 59.87 | 61.77 | 67.55 | 68.77 | 69.42 | 72.87 | 74.67 | 68.52 | 63.15 | 56.89 | 64.95 | |||||||||||||
1998 | 56.21 | 55.11 | 57.98 | 57.23 | 60.98 | 64.67 | 69.53 | 72.06 | 70.40 | 65.63 | 59.73 | 55.52 | 62.09 | |||||||||||||
1999 | 57.13 | 56.48 | 55.68 | 58.35 | 63.40 | 64.95 | 70.34 | 68.76 | 67.78 | 68.08 | 60.53 | 59.19 | 62.56 | |||||||||||||
2000 | 58.42 | 57.74 | 57.90 | 60.97 | 64.26 | 67.97 | 68.61 | 70.76 | 69.63 | 63.63 | 58.13 | 58.44 | 63.04 | |||||||||||||
2001 | 54.92 | 54.16 | 57.81 | 57.07 | 63.90 | 67.37 | 67.81 | 68.39 | 67.83 | 65.18 | 60.60 | 55.61 | 61.72 | |||||||||||||
2002 | 55.44 | 58.88 | 58.02 | 58.92 | 61.82 | 65.68 | 68.45 | 67.58 | 67.58 | 62.76 | 63.73 | 56.31 | 62.10 | |||||||||||||
2003 | 62.10 | 58.05 | 59.18 | 58.33 | 61.10 | 65.12 | 71.47 | 71.05 | 67.78 | 67.40 | 59.60 | 56.74 | 63.16 | |||||||||||||
2004 | 56.84 | 55.59 | 61.03 | 62.10 | 66.66 | 66.78 | 69.31 | 69.31 | 72.50 | 63.65 | 58.90 | 57.29 | 63.33 | |||||||||||||
2005 | 57.42 | 58.14 | 58.58 | 59.92 | 63.92 | 64.92 | 68.63 | 69.61 | 67.55 | 64.98 | 63.83 | 59.03 | 63.04 | |||||||||||||
2006 | 58.11 | 58.98 | 54.71 | 59.38 | 64.42 | 69.18 | 74.26 | 70.77 | 68.82 | 65.85 | 63.55 | 57.29 | 63.78 | |||||||||||||
2007 | 54.48 | 57.48 | 59.97 | 60.07 | 62.10 | 64.77 | 69.90 | 71.34 | 68.30 | 66.27 | 61.48 | 55.82 | 62.67 | |||||||||||||
2008 | 55.89 | 56.76 | 60.08 | 62.67 | 64.08 | 68.40 | 69.84 | 70.00 | 68.62 | 68.87 | 64.03 | 54.85 | 63.67 | |||||||||||||
2009 | 60.06 | 56.23 | 57.71 | 60.15 | 63.85 | 64.95 | 68.39 | 68.81 | 69.93 | 65.02 | 61.53 | 56.21 | 62.74 | |||||||||||||
2010 | 58.42 | 57.48 | 59.79 | 58.48 | 60.97 | 64.60 | 65.73 | 65.81 | 66.83 | 65.56 | 61.42 | 58.16 | 61.94 | |||||||||||||
2011 | 59.18 | 55.30 | 57.94 | 61.77 | 62.42 | 63.77 | 68.32 | 67.61 | 66.93 | 64.47 | 59.13 | 55.00 | 61.82 | |||||||||||||
2012 | 59.39 | 57.07 | 57.13 | 59.70 | 63.05 | 65.28 | 66.63 | 72.24 | 72.23 | 69.00 | 62.68 | 56.53 | 63.41 | |||||||||||||
2013 | 56.48 | 56.11 | 59.18 | 62.15 | 66.52 | 67.92 | 68.97 | 68.60 | 70.15 | 65.73 | 64.08 | 59.00 | 63.74 | |||||||||||||
2014 | 61.32 | 59.71 | 62.37 | 62.63 | 68.92 | 67.60 | 71.84 | 71.24 | 72.98 | 69.97 | 64.93 | 58.18 | 65.98 | |||||||||||||
2015 | 59.82 | 61.04 | 64.48 | 62.23 | 61.03 | 66.32 | 70.31 | 72.77 | 75.10 | 74.00 | 62.22 | 57.32 | 65.55 | |||||||||||||
2016 | 56.97 | 63.02 | 60.48 | 63.53 | 62.77 | 66.76 | a | 71.65 | 70.56 | 71.08 | 68.26 | 64.82 | 58.15 | 64.84 | ||||||||||||
2017 | 55.76 | 57.20 | 61.05 | 63.63 | 63.27 | 66.70 | 71.71 | 72.03 | 71.53 | 71.45 | 65.50 | 61.37 | 65.10 | |||||||||||||
2018 | 61.87 | 58.43 | 58.65 | 62.02 | 62.94 | 67.05 | 74.50 | 74.74 | 70.15 | 68.71 | 65.05 | 58.68 | 65.23 | |||||||||||||
2019 | 57.48 | 53.57 | 59.50 | 62.67 | 62.11 | 66.45 | 69.40 | 70.45 | 73.42 | 70.08 | 63.62 | 58.81 | 63.96 | |||||||||||||
2020 | 59.47 | 61.03 | 59.89 | 63.60 | 66.05 | 67.41 | a | 67.68 | 71.52 | 70.83 | 69.61 | 60.32 | 58.61 | 64.67 | ||||||||||||
2021 | 57.65 | 57.84 | 56.53 | 60.93 | 62.34 | 65.57 | 68.76 | 69.71 | 68.42 | 65.68 | 63.72 | 55.29 | 62.70 | |||||||||||||
2022 | 59.26 | 59.86 | 60.90 | 63.58 | 63.45 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.90 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 56.31 | 56.98 | 57.99 | 60.26 | 62.77 | 65.69 | 68.96 | 69.96 | 69.33 | 66.22 | 61.42 | 57.06 | 62.81 | |||||||||||||
S.D. | 2.98 | 2.81 | 2.43 | 2.17 | 2.06 | 1.96 | 2.05 | 2.12 | 2.46 | 2.48 | 2.43 | 2.08 | 1.51 | |||||||||||||
SKEW | -0.90 | -0.29 | 0.04 | 0.33 | 0.41 | 0.44 | 0.44 | 0.27 | 0.63 | 0.46 | -0.07 | 0.14 | -0.07 | |||||||||||||
MAX | 62.23 | 63.02 | 64.48 | 65.60 | 68.92 | 71.88 | 75.05 | 74.74 | 76.48 | 74.00 | 65.92 | 62.44 | 66.38 | |||||||||||||
MIN | 45.03 | 49.52 | 51.69 | 56.00 | 58.44 | 61.95 | 63.98 | 65.81 | 64.97 | 61.55 | 56.57 | 52.74 | 59.28 | |||||||||||||
YRS | 87 | 87 | 87 | 87 | 86 | 86 | 86 | 86 | 85 | 86 | 84 | 85 | 83 |