YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1942 | 57.73 | a | 61.18 | 68.68 | 70.43 | 78.87 | 91.73 | 100.84 | 98.65 | 89.73 | 82.48 | 67.90 | 57.03 | 77.11 | ||||||||||||
1943 | 59.26 | 64.68 | 66.77 | 75.00 | 85.74 | 86.27 | 97.10 | 94.29 | 93.30 | 79.32 | 70.47 | 59.06 | 77.61 | |||||||||||||
1944 | 59.48 | 58.86 | 68.81 | 70.30 | 82.23 | 85.00 | 95.84 | 96.48 | 92.47 | 82.26 | 64.37 | 62.03 | 76.51 | |||||||||||||
1945 | 54.03 | 63.50 | 62.06 | 77.43 | 80.06 | 90.83 | 101.45 | 95.77 | 92.27 | 79.58 | 65.23 | 57.48 | 76.64 | |||||||||||||
1946 | 57.32 | 60.50 | 67.16 | 77.83 | 81.77 | 88.37 | 96.81 | 98.00 | 90.80 | 75.13 | 61.47 | 53.26 | 75.70 | |||||||||||||
1947 | 52.16 | 62.00 | 70.58 | 78.07 | 88.03 | 90.13 | 94.65 | 92.68 | 93.23 | 78.00 | 63.17 | 57.03 | 76.64 | |||||||||||||
1948 | 65.32 | 60.69 | 63.84 | 69.60 | 77.74 | 89.03 | 95.77 | 94.45 | 90.40 | 79.06 | 67.20 | 52.65 | 75.48 | |||||||||||||
1949 | 49.87 | 58.00 | 63.87 | 78.70 | 80.55 | 93.23 | 98.10 | 92.32 | 91.57 | 79.38 | b | 72.97 | 56.35 | 76.24 | ||||||||||||
1950 | 54.77 | 65.86 | 67.26 | 78.93 | a | 85.06 | 89.87 | 100.39 | 98.73 | a | 88.38 | a | 80.71 | 71.60 | 59.19 | 78.40 | ||||||||||
1951 | 56.87 | 63.00 | 70.06 | 75.76 | a | 84.26 | 91.93 | 97.94 | 96.65 | 93.07 | 79.26 | 68.93 | 55.97 | 77.81 | ||||||||||||
1952 | 54.68 | 62.52 | 61.26 | 74.03 | 86.42 | 84.33 | 99.16 | 97.19 | 92.60 | 83.87 | 65.23 | 56.26 | 76.46 | |||||||||||||
1953 | 60.58 | 63.71 | 68.55 | 73.63 | 76.29 | 85.17 | 100.94 | 92.23 | 91.50 | 79.94 | 66.23 | 60.74 | 76.63 | |||||||||||||
1954 | 58.00 | 61.93 | 63.87 | 79.07 | 87.06 | 88.73 | 99.61 | 92.32 | 88.80 | 80.94 | 64.80 | 54.29 | 76.62 | |||||||||||||
1955 | 50.94 | 60.14 | 67.74 | 68.97 | 80.84 | 89.23 | 94.32 | 99.55 | 92.37 | 81.61 | 66.20 | 57.81 | 75.81 | |||||||||||||
1956 | 57.52 | 58.10 | 68.81 | 72.57 | 81.29 | 91.90 | 97.23 | 93.65 | 91.83 | 74.68 | 70.30 | 59.48 | 76.45 | |||||||||||||
1957 | 52.39 | 61.89 | 67.16 | 74.23 | 78.42 | 94.10 | 96.80 | p | 95.77 | a | 90.07 | a | 76.53 | a | 66.86 | b | 56.64 | c | 74.01 | a | ||||||
1958 | 58.76 | b | 65.18 | 62.23 | a | 73.00 | b | 85.35 | 88.60 | 97.03 | 100.63 | a | 92.36 | b | 85.65 | 70.14 | a | 65.57 | a | 78.71 | ||||||
1959 | 60.74 | 60.68 | 73.13 | 81.37 | c | 82.20 | a | 95.45 | a | 102.60 | a | 96.35 | 88.15 | d | 84.13 | a | 73.14 | b | 61.29 | 79.94 | ||||||
1960 | 58.26 | 61.14 | 71.67 | a | 75.00 | a | 83.61 | 99.47 | 101.77 | 98.68 | 94.20 | 78.45 | 63.83 | 56.52 | 78.55 | |||||||||||
1961 | 55.48 | 65.96 | 68.00 | 78.87 | 80.65 | 97.48 | a | 102.29 | 98.37 | a | 90.79 | a | 81.53 | a | 66.90 | 53.26 | 78.30 | |||||||||
1962 | 54.06 | 57.86 | 64.20 | a | 82.00 | 80.55 | 93.33 | 99.48 | 97.26 | 92.40 | 78.74 | 69.17 | 60.90 | 77.50 | ||||||||||||
1963 | 56.94 | 68.61 | 67.19 | 68.83 | 82.27 | a | 88.50 | d | 96.61 | 95.84 | 92.83 | 79.87 | 63.55 | a | 51.29 | 76.03 | ||||||||||
1964 | 58.06 | 63.43 | a | 67.32 | 74.97 | 80.87 | 91.33 | 99.16 | 97.52 | 90.40 | 85.42 | 62.47 | 59.65 | 77.55 | ||||||||||||
1965 | 57.10 | 63.25 | 68.63 | a | 72.93 | 84.35 | 88.90 | 97.84 | 98.26 | 87.00 | 85.03 | 65.60 | 50.97 | 76.66 | ||||||||||||
1966 | 57.87 | 60.54 | 71.32 | 83.17 | 87.06 | 92.57 | 96.29 | 100.55 | 100.93 | 82.16 | 66.97 | 53.10 | 79.38 | |||||||||||||
1967 | 58.32 | 59.79 | 65.26 | 61.28 | a | 85.19 | 89.17 | 102.42 | 103.19 | 94.33 | 84.74 | 72.77 | 56.90 | 77.78 | ||||||||||||
1968 | 57.68 | 66.14 | 71.37 | a | 77.80 | 85.45 | 95.60 | 100.77 | 94.74 | ----- | z | 80.00 | 63.48 | a | 56.71 | 77.25 | a | |||||||||
1969 | 53.68 | 58.68 | 66.94 | 74.00 | 88.65 | 88.57 | 100.00 | 100.26 | 94.50 | 77.13 | 70.00 | 62.74 | 77.93 | |||||||||||||
1970 | 63.42 | 66.57 | 69.77 | 71.47 | 88.65 | 92.93 | 102.16 | 99.13 | 94.10 | 83.48 | 71.50 | 57.39 | 80.05 | |||||||||||||
1971 | 57.48 | 62.14 | 71.03 | 74.43 | 78.61 | 92.37 | 100.29 | 99.29 | 92.93 | 79.13 | 66.31 | a | 55.53 | a | 77.46 | |||||||||||
1972 | 51.45 | 66.34 | 77.06 | 75.48 | a | 88.26 | 94.00 | 99.74 | 96.68 | ----- | z | ----- | z | 61.23 | 51.42 | 76.17 | b | |||||||||
1973 | 56.39 | 62.71 | 61.32 | 77.20 | 89.52 | 95.20 | 97.81 | ----- | z | ----- | z | 80.16 | 64.72 | a | 57.29 | 74.23 | b | |||||||||
1974 | 58.03 | 64.14 | 67.83 | a | 74.43 | 86.10 | 92.77 | 95.97 | 95.73 | a | 94.70 | 80.55 | 66.57 | 55.06 | 77.66 | |||||||||||
1975 | 56.77 | 62.93 | a | 67.00 | 69.53 | 87.29 | 93.40 | 97.39 | 96.26 | d | 93.00 | l | 78.74 | 66.43 | 60.94 | 76.06 | a | |||||||||
1976 | 61.94 | 64.00 | 68.86 | c | 71.69 | a | 88.81 | 92.45 | a | 97.67 | a | 89.26 | 87.46 | b | 81.84 | 67.37 | 61.29 | j | 79.21 | a | ||||||
1977 | 51.06 | 67.43 | 67.03 | 81.43 | 75.23 | 96.53 | 99.65 | 98.03 | 90.30 | 82.84 | 69.90 | 60.83 | a | 78.36 | ||||||||||||
1978 | ----- | z | 60.14 | 69.48 | b | 70.60 | 85.90 | a | 91.97 | 97.32 | 97.81 | d | 87.07 | b | 86.32 | c | 62.83 | 51.77 | 78.29 | a | ||||||
1979 | 56.39 | 60.81 | a | 66.84 | ----- | z | 87.14 | c | 95.37 | c | 96.71 | 93.48 | b | 94.21 | a | 80.52 | 67.27 | ----- | z | 79.87 | b | |||||
1980 | 58.45 | 63.79 | 65.81 | 75.50 | 80.23 | 88.33 | 96.03 | b | 94.47 | a | ----- | z | 84.52 | 70.50 | 60.97 | a | 76.24 | a | ||||||||
1981 | 61.67 | a | 65.07 | 66.39 | 78.20 | 86.37 | a | 97.10 | 97.84 | 96.61 | 91.67 | 76.77 | 68.27 | 59.35 | 78.78 | |||||||||||
1982 | 53.46 | c | 64.81 | a | 64.10 | b | 71.90 | a | 85.53 | a | 87.40 | ----- | z | 94.47 | a | 86.77 | d | 79.53 | a | 61.60 | 56.19 | 73.25 | a | |||
1983 | 52.23 | a | 62.71 | 65.52 | 67.40 | 86.37 | d | 91.70 | 93.57 | c | 94.57 | c | 92.52 | a | 81.62 | b | 66.83 | 60.13 | a | 76.27 | ||||||
1984 | 55.90 | 68.79 | a | 76.10 | 76.17 | 92.41 | b | 94.37 | c | 100.83 | a | 96.39 | 94.72 | a | 74.68 | 64.50 | 53.32 | 79.02 | ||||||||
1985 | 51.77 | 65.29 | 66.33 | a | 84.31 | a | 86.07 | b | 98.37 | 101.20 | a | 95.77 | a | 85.63 | 79.94 | 64.07 | a | 54.19 | 77.74 | |||||||
1986 | 64.58 | 66.78 | a | 74.79 | b | 78.03 | 89.79 | c | 96.69 | d | 97.68 | c | 101.33 | a | 86.29 | f | 83.62 | e | 73.54 | b | 57.50 | a | 80.39 | a | ||
1987 | 57.86 | b | 66.05 | f | 70.77 | 86.34 | a | 89.46 | e | 96.25 | f | 94.43 | h | 99.44 | d | 93.92 | e | 86.62 | g | 66.07 | a | 58.29 | 77.77 | d | ||
1988 | 60.17 | a | 70.03 | 75.68 | c | 78.23 | 86.59 | d | 93.46 | f | 104.38 | b | 99.00 | a | 95.33 | c | 87.97 | a | 68.97 | a | 60.24 | b | 80.60 | a | ||
1989 | 59.27 | a | 61.60 | c | 74.07 | b | 84.52 | c | 86.21 | b | 93.56 | c | 100.33 | d | 97.93 | d | 93.00 | d | 82.00 | b | 72.80 | 61.47 | a | 80.56 | ||
1990 | 60.52 | 64.07 | a | 73.86 | c | 84.46 | b | 85.40 | a | 95.19 | c | 101.69 | b | 98.93 | b | 93.60 | 88.19 | e | 70.59 | a | 58.37 | a | 81.24 | |||
1991 | 61.97 | 74.26 | a | 63.40 | a | 76.86 | b | 85.17 | b | 93.52 | a | 103.04 | c | 97.00 | a | 99.50 | b | 89.75 | c | ----- | z | 61.19 | 82.33 | a | ||
1992 | 53.90 | a | 67.79 | a | 69.24 | b | 83.86 | a | ----- | z | 94.03 | ----- | z | 102.17 | b | 96.13 | 85.60 | a | 70.87 | 56.83 | a | 78.04 | b | |||
1993 | 56.42 | 62.29 | 73.36 | c | 78.81 | c | 86.30 | a | 93.59 | a | 98.52 | b | 98.11 | d | ----- | z | 85.23 | 70.10 | 58.42 | 78.29 | a | |||||
1994 | 61.77 | a | 63.26 | a | 74.97 | a | 80.57 | 86.21 | b | 97.08 | e | 102.03 | a | 101.04 | d | 94.43 | 81.30 | a | 63.03 | 58.65 | 80.36 | |||||
1995 | 59.71 | 63.61 | 67.81 | 76.70 | 82.29 | 92.27 | 98.67 | a | 100.29 | 95.07 | b | 86.97 | a | 76.13 | 63.81 | 80.28 | ||||||||||
1996 | 61.90 | a | 65.89 | a | 74.40 | a | 82.00 | a | 88.25 | c | 97.97 | a | 104.36 | c | 103.46 | e | 93.52 | c | 83.36 | c | 68.37 | 61.31 | b | 82.06 | ||
1997 | 60.29 | 67.81 | a | 78.54 | c | 82.71 | b | 93.67 | a | 93.80 | 98.65 | 98.25 | c | 94.50 | b | 83.07 | b | 70.18 | b | 58.97 | a | 81.70 | ||||
1998 | 61.00 | a | 60.68 | 70.00 | c | 73.86 | a | 75.07 | a | 88.44 | c | 100.37 | d | 102.46 | c | 91.81 | c | 80.00 | a | 66.43 | 59.39 | 77.46 | ||||
1999 | 58.07 | b | 65.36 | 68.00 | d | 75.93 | a | 86.29 | c | 93.83 | a | 98.12 | e | 95.23 | a | 95.68 | b | 87.90 | a | 72.32 | b | 63.68 | 80.03 | |||
2000 | 62.97 | 64.79 | a | 71.71 | c | 80.82 | b | 88.75 | c | 96.87 | 96.47 | a | 99.83 | g | 92.19 | d | 78.81 | d | 64.41 | a | 63.77 | a | 78.32 | a | ||
2001 | 59.74 | 60.81 | a | 74.31 | b | 74.86 | a | 96.03 | a | 98.04 | c | 99.38 | b | 100.27 | e | 95.86 | b | 85.62 | b | 70.33 | c | 58.97 | 81.19 | |||
2002 | 57.46 | e | 70.70 | a | 72.90 | b | 81.30 | g | 88.48 | b | 97.64 | h | 101.86 | b | 99.14 | c | 96.20 | 81.53 | a | 70.80 | 61.69 | b | 80.08 | b | ||
2003 | 60.97 | 64.15 | a | 74.24 | b | 71.14 | a | 85.30 | d | 96.14 | a | 102.11 | c | 97.38 | b | 97.50 | d | 87.77 | a | 64.59 | a | 61.70 | a | 80.25 | ||
2004 | 57.73 | a | 62.61 | a | 80.10 | b | 79.68 | h | 88.79 | c | 95.22 | c | 99.87 | 98.54 | c | 94.04 | b | 78.33 | a | 61.75 | j | 57.48 | h | 83.91 | c | |
2005 | 56.39 | 65.79 | i | 71.45 | 76.37 | 85.90 | 91.00 | g | 104.97 | a | 102.43 | a | 91.50 | b | 82.62 | e | 72.71 | m | 63.10 | 81.64 | c | |||||
2006 | 62.39 | 68.75 | h | 63.33 | g | 73.43 | 90.25 | g | 98.69 | q | 105.17 | a | 99.13 | 95.62 | n | 79.70 | k | 71.73 | s | 62.41 | i | 85.03 | h | |||
2007 | 61.00 | a | 65.74 | a | 78.86 | q | 76.31 | n | 90.96 | c | 96.27 | 99.61 | 100.33 | a | 89.33 | 79.20 | a | 73.23 | d | 58.47 | a | 81.41 | b | |||
2008 | 57.77 | 63.69 | 73.24 | b | 78.27 | 86.03 | a | 96.88 | d | 101.75 | c | 103.23 | 96.90 | 84.26 | 71.28 | a | 57.90 | 80.93 | ||||||||
2009 | 61.13 | 63.79 | 71.45 | 78.17 | 92.58 | 91.57 | 104.42 | 100.23 | 98.30 | 79.26 | 70.27 | 58.77 | 80.83 | |||||||||||||
2010 | 57.70 | a | 62.04 | 69.77 | 71.18 | b | 78.30 | d | 94.17 | 102.69 | e | 99.39 | 94.50 | 82.03 | 67.30 | 60.47 | a | 78.29 | ||||||||
2011 | 56.16 | 61.06 | j | 65.84 | 76.27 | 80.69 | b | 90.23 | 99.13 | 100.42 | 97.57 | 83.52 | 66.43 | 61.06 | 79.76 | a | ||||||||||
2012 | 64.94 | 66.86 | a | 68.58 | 72.20 | t | 87.97 | 93.93 | 98.68 | 103.39 | 98.68 | e | 83.78 | d | 70.57 | p | ----- | z | 85.20 | c | ||||||
2013 | ----- | z | 63.32 | i | 75.90 | 82.40 | 87.08 | g | 98.31 | a | 104.35 | 100.16 | 93.07 | 81.77 | 71.55 | a | 62.55 | 85.56 | c | |||||||
2014 | 70.32 | 68.18 | 74.87 | 80.83 | 90.34 | b | 98.03 | 103.45 | 101.23 | 97.40 | 87.03 | 70.10 | 61.48 | b | 83.61 | |||||||||||
2015 | 60.26 | 71.71 | 79.65 | 80.23 | 84.33 | a | 98.57 | 99.29 | 100.42 | 96.48 | a | 86.71 | 66.70 | 59.81 | 82.01 | |||||||||||
2016 | 60.58 | 70.41 | 73.87 | 81.00 | 86.03 | 99.26 | c | 101.29 | g | 101.34 | b | 94.80 | 81.74 | 72.20 | 58.74 | 80.00 | a | |||||||||
2017 | 57.43 | a | 63.07 | 72.35 | 75.62 | a | 87.32 | 98.58 | f | 104.29 | 103.53 | a | 93.33 | 83.27 | e | 71.77 | h | 64.83 | h | 82.25 | c | |||||
2018 | 64.05 | l | 67.82 | k | 66.89 | l | 80.78 | g | 85.93 | b | 95.18 | b | 104.52 | d | 101.64 | i | 95.00 | m | 81.14 | q | 72.92 | e | 59.65 | e | 83.64 | g |
2019 | 59.48 | f | 57.21 | i | 70.67 | s | 76.14 | w | 75.00 | y | ----- | z | ----- | z | ----- | z | 91.36 | p | 80.82 | t | 70.00 | r | 59.30 | d | 59.30 | k |
2020 | 60.29 | g | 70.56 | t | 69.29 | x | 74.17 | x | 91.00 | w | 95.00 | t | 100.64 | t | 100.62 | w | 98.30 | t | 88.30 | u | ----- | z | 61.33 | y | ----- | z |
2021 | 65.90 | u | 70.71 | u | 67.40 | u | 84.44 | u | ----- | z | 103.57 | w | 108.43 | q | 104.16 | f | 98.61 | l | 79.57 | j | 72.67 | o | 59.06 | m | ----- | z |
2022 | 63.55 | t | 76.25 | x | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2023 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 87.40 | y | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 58.06 | 63.91 | 69.64 | 76.35 | 85.10 | 92.98 | 99.73 | 98.02 | 93.04 | 81.90 | 67.92 | 58.39 | 78.46 | |||||||||||||
S.D. | 3.74 | 3.36 | 4.34 | 4.74 | 4.23 | 3.68 | 2.80 | 3.05 | 3.14 | 3.36 | 3.47 | 3.29 | 1.98 | |||||||||||||
SKEW | 0.20 | 0.60 | 0.26 | -0.28 | -0.24 | -0.31 | 0.09 | -0.31 | -0.07 | 0.11 | 0.04 | -0.38 | 0.56 | |||||||||||||
MAX | 70.32 | 74.26 | 80.10 | 86.34 | 96.03 | 99.47 | 105.17 | 103.53 | 100.93 | 89.75 | 76.13 | 65.57 | 83.61 | |||||||||||||
MIN | 49.87 | 57.86 | 61.26 | 61.28 | 75.07 | 84.33 | 93.57 | 89.26 | 85.63 | 74.68 | 61.23 | 50.97 | 75.48 | |||||||||||||
YRS | 74 | 71 | 74 | 71 | 74 | 71 | 72 | 74 | 68 | 73 | 71 | 72 | 49 |