YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 100.13 | o | 96.45 | 91.45 | 92.83 | 85.94 | 74.70 | 64.29 | 84.28 | f | ||||||
1955 | 56.10 | 59.61 | 71.06 | 77.03 | 85.06 | 94.90 | 94.13 | 90.26 | 92.90 | 85.68 | 70.33 | 66.23 | 78.61 | |||||||||||||
1956 | 65.80 | a | 58.86 | 74.87 | 75.87 | 89.71 | 97.33 | 95.00 | a | 93.87 | 95.47 | 83.35 | 68.47 | 62.19 | 80.07 | |||||||||||
1957 | 60.10 | 70.43 | 68.00 | 75.47 | 81.00 | 96.00 | 95.90 | 90.35 | 90.97 | a | 75.68 | 62.60 | 63.42 | 77.49 | ||||||||||||
1958 | 61.10 | a | 64.75 | 61.35 | 75.13 | 91.68 | 96.83 | 97.32 | 94.06 | 89.57 | 80.29 | 69.17 | 67.13 | 79.03 | ||||||||||||
1959 | 65.48 | 63.39 | 71.97 | 82.00 | 87.16 | 97.77 | 97.42 | 90.48 | 90.80 | 81.84 | 67.60 | 59.19 | 79.59 | |||||||||||||
1960 | 55.07 | a | 58.52 | 74.74 | 79.93 | 86.61 | 98.23 | 97.63 | a | 95.55 | 94.30 | 78.61 | 71.80 | 59.03 | 79.17 | |||||||||||
1961 | 61.35 | 65.52 | a | 69.84 | 80.37 | 88.48 | 98.07 | 97.48 | 92.93 | a | 87.17 | 78.90 | 64.10 | 58.19 | 78.53 | |||||||||||
1962 | 57.13 | 64.61 | 65.32 | 83.63 | 86.26 | 95.10 | 96.06 | 98.97 | 91.07 | a | 81.71 | 72.63 | 62.06 | 79.55 | ||||||||||||
1963 | 58.00 | a | 68.57 | 70.84 | 77.63 | 90.48 | 94.43 | 98.35 | 89.45 | 91.40 | 84.19 | 68.83 | 62.48 | 79.56 | ||||||||||||
1964 | 58.50 | a | 60.48 | 66.23 | 75.07 | 87.77 | 94.53 | 97.32 | 91.37 | a | 85.27 | 83.58 | 65.47 | 60.00 | 77.13 | |||||||||||
1965 | 62.45 | 62.25 | 67.10 | a | 76.50 | 84.23 | 92.24 | a | 95.71 | 95.87 | 88.86 | a | 85.29 | 71.50 | 58.90 | b | 78.41 | |||||||||
1966 | 56.10 | 57.21 | 72.29 | 79.93 | 89.77 | 96.10 | 98.50 | a | 93.13 | 86.67 | 80.61 | 71.67 | 61.16 | 78.60 | ||||||||||||
1967 | 62.26 | 68.79 | 76.43 | a | 76.93 | 85.81 | 93.47 | 95.42 | 93.19 | 89.93 | 83.29 | 72.03 | 55.06 | 79.38 | ||||||||||||
1968 | 59.71 | 67.24 | 67.35 | 74.90 | 86.74 | 97.60 | 95.17 | a | 90.45 | 91.73 | 84.32 | 67.40 | 59.97 | b | 78.55 | |||||||||||
1969 | 63.42 | 62.21 | 67.03 | 81.00 | 90.16 | 96.10 | 97.52 | 98.39 | 91.13 | 79.42 | 66.23 | 61.81 | 79.54 | |||||||||||||
1970 | 60.81 | 67.68 | 66.87 | 74.90 | 89.68 | 97.57 | 99.16 | 96.35 | 87.90 | 78.26 | 72.57 | 62.03 | 79.48 | |||||||||||||
1971 | 63.35 | 65.93 | 75.94 | 78.77 | 85.55 | 97.67 | 100.58 | 92.06 | 91.10 | 74.17 | a | 67.87 | 55.26 | 79.02 | ||||||||||||
1972 | 62.61 | 69.07 | 80.77 | 83.37 | 88.97 | 95.63 | 100.00 | 95.42 | 90.37 | 76.74 | 64.23 | 58.48 | 80.47 | |||||||||||||
1973 | 56.80 | a | 61.11 | 61.26 | 73.69 | a | 88.90 | 96.10 | 97.35 | 98.35 | 94.87 | 85.65 | 71.03 | 64.97 | 79.17 | |||||||||||
1974 | 60.55 | 65.50 | 73.71 | 80.37 | 90.23 | 102.27 | 96.16 | 95.23 | 88.53 | 78.39 | 68.20 | 57.77 | 79.74 | |||||||||||||
1975 | 60.74 | 63.25 | 68.77 | 72.93 | 85.58 | 96.37 | 95.87 | 97.16 | 89.77 | 82.29 | 70.60 | 61.35 | 78.72 | |||||||||||||
1976 | 61.68 | 67.66 | 69.48 | 78.03 | 87.87 | 97.87 | 93.94 | 96.58 | 87.00 | 76.19 | 68.80 | 60.94 | 78.84 | |||||||||||||
1977 | 57.42 | 68.39 | 67.61 | 79.30 | 84.52 | 98.23 | 97.32 | 96.77 | 91.73 | 82.23 | 71.90 | 64.87 | 80.03 | |||||||||||||
1978 | 59.65 | 61.75 | 70.87 | 78.03 | 86.65 | 99.40 | 98.87 | 94.60 | a | 90.07 | 83.81 | ----- | z | ----- | z | 82.37 | b | |||||||||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 94.10 | ----- | z | 66.67 | ----- | z | 80.38 | j | ||
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 101.17 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 101.17 | k | |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | 75.37 | ----- | z | 75.37 | k | |
2010 | 62.65 | 61.32 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.98 | j | ||
2011 | ----- | z | ----- | z | 74.85 | d | 80.50 | 84.97 | 99.53 | 96.10 | 95.72 | b | 89.21 | b | 80.80 | a | 66.04 | b | 54.19 | 82.19 | b | |||||
2012 | 63.00 | 64.52 | b | 71.06 | 81.70 | 90.97 | a | 99.66 | a | 93.35 | 95.13 | 88.27 | 81.77 | 72.40 | 59.65 | 80.12 | ||||||||||
2013 | 56.10 | 59.25 | 74.26 | 79.87 | 88.97 | b | 100.92 | d | 95.23 | 94.30 | a | 89.57 | 79.19 | 68.77 | 58.16 | 78.71 | ||||||||||
2014 | 64.26 | 68.43 | 72.29 | 79.60 | 87.68 | 99.93 | 96.87 | 91.81 | 87.37 | 81.19 | 68.63 | 59.73 | a | 79.82 | ||||||||||||
2015 | 59.97 | 68.32 | 73.71 | 78.37 | 83.00 | a | 97.83 | 93.84 | 95.03 | 87.46 | b | 77.48 | 65.30 | 57.23 | 78.13 | |||||||||||
2016 | 58.26 | 69.55 | 74.83 | a | 76.93 | 85.16 | 98.50 | 97.47 | a | 91.03 | 86.27 | 83.74 | 70.10 | 60.97 | 79.40 | |||||||||||
2017 | 58.10 | 66.61 | 77.29 | 81.73 | 86.32 | 100.47 | 95.13 | 92.39 | 90.47 | 84.81 | 76.37 | 63.84 | 81.13 | |||||||||||||
2018 | 64.71 | 64.57 | 71.68 | 83.53 | 90.29 | 98.77 | 96.71 | 93.97 | 91.03 | 74.65 | 67.13 | 57.94 | 79.58 | |||||||||||||
2019 | 58.06 | 57.11 | 70.52 | 79.63 | 81.81 | 96.23 | 98.87 | 97.10 | 89.03 | 79.39 | 68.33 | 57.52 | 77.80 | |||||||||||||
2020 | 59.42 | 62.97 | 67.90 | 80.13 | 91.90 | 98.20 | 99.97 | 101.32 | 93.07 | 85.87 | 73.23 | 60.16 | 81.18 | |||||||||||||
2021 | 60.58 | 66.00 | 69.71 | 81.37 | 90.81 | 100.93 | 94.16 | 92.61 | 88.97 | 79.45 | 73.77 | 62.71 | 80.09 | |||||||||||||
2022 | 60.23 | 63.43 | 72.00 | 83.37 | 91.94 | 97.50 | 97.10 | 89.84 | 89.73 | 76.87 | 65.10 | 59.16 | 78.85 | |||||||||||||
2023 | 57.06 | 61.32 | 67.19 | 81.53 | 87.84 | 96.03 | 104.19 | 98.13 | 94.40 | 84.03 | 70.73 | 62.19 | 80.39 | |||||||||||||
2024 | 57.87 | 63.69 | 67.10 | 78.64 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.82 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 60.17 | 64.21 | 70.63 | 78.89 | 87.58 | 97.51 | 96.94 | 94.23 | 90.27 | 81.04 | 69.43 | 60.55 | 79.25 | |||||||||||||
S.D. | 2.81 | 3.66 | 4.19 | 2.87 | 2.79 | 2.23 | 2.16 | 2.91 | 2.50 | 3.35 | 3.29 | 3.02 | 0.91 | |||||||||||||
SKEW | 0.16 | -0.21 | -0.04 | -0.20 | -0.38 | -0.05 | 0.93 | 0.25 | 0.20 | -0.29 | 0.03 | 0.06 | -0.09 | |||||||||||||
MAX | 65.80 | 70.43 | 80.77 | 83.63 | 91.94 | 102.27 | 104.19 | 101.32 | 95.47 | 85.94 | 76.37 | 67.13 | 81.18 | |||||||||||||
MIN | 55.07 | 57.11 | 61.26 | 72.93 | 81.00 | 92.24 | 93.35 | 89.45 | 85.27 | 74.17 | 62.60 | 54.19 | 77.13 | |||||||||||||
YRS | 38 | 38 | 38 | 38 | 37 | 38 | 38 | 38 | 39 | 38 | 39 | 37 | 35 |