YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 94.25 | w | 92.40 | y | 83.42 | s | 69.64 | s | 53.13 | 53.13 | k | |
1964 | 58.17 | a | 59.93 | a | 72.57 | a | 83.30 | 90.35 | 95.67 | 97.87 | 97.74 | 84.76 | a | 79.27 | a | 69.53 | 62.03 | 79.27 | ||||||||
1965 | 63.84 | 60.79 | 65.19 | 84.03 | 84.00 | l | ----- | z | 97.12 | g | 93.00 | 92.89 | u | 77.21 | q | 74.07 | 62.65 | 71.94 | e | |||||||
1966 | 53.23 | 59.57 | 74.68 | 80.03 | 86.16 | 91.90 | 97.55 | 91.60 | a | 86.00 | u | 77.14 | q | 73.13 | 63.04 | h | 78.65 | c | ||||||||
1967 | 63.97 | 66.89 | 80.90 | 85.47 | 91.52 | 95.13 | 96.10 | b | 92.32 | ----- | z | 80.59 | i | 67.80 | 56.68 | 79.68 | b | |||||||||
1968 | 56.42 | 60.93 | 68.13 | 77.97 | a | 88.65 | 95.07 | 91.33 | m | ----- | z | 87.68 | b | 83.19 | 64.63 | 62.75 | w | 75.85 | c | |||||||
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 100.05 | j | 97.39 | 89.60 | 77.71 | 68.87 | 64.97 | 79.71 | g | |||||
1970 | 62.77 | a | 66.07 | 69.19 | 81.47 | 87.94 | 93.50 | 96.94 | 96.23 | 88.20 | 76.23 | 72.73 | 69.53 | a | 80.07 | |||||||||||
1971 | 70.61 | 68.75 | 77.77 | 80.23 | 89.63 | a | 92.63 | 97.26 | ----- | z | ----- | z | ----- | z | 68.67 | o | 59.46 | e | 79.54 | d | ||||||
1972 | 62.72 | f | 63.50 | e | 77.74 | d | 87.32 | e | 84.38 | e | 92.54 | d | 91.20 | f | 89.85 | d | 87.65 | d | 77.96 | g | 61.40 | e | 58.92 | f | 80.55 | d |
1973 | 50.84 | f | 56.70 | e | 70.81 | d | 73.32 | e | 86.04 | f | 93.19 | d | 91.64 | f | 92.71 | c | 87.00 | e | 81.40 | f | 73.36 | e | 62.09 | h | 78.16 | e |
1974 | 59.08 | e | 65.22 | e | 80.42 | e | 80.65 | d | 90.58 | e | 93.96 | e | 95.38 | g | 89.93 | d | 77.42 | f | 74.56 | f | 64.12 | e | 56.12 | f | 77.99 | d |
1975 | 59.04 | f | 62.52 | e | 71.04 | e | 78.92 | d | 85.38 | e | 94.46 | f | 89.19 | e | 92.54 | e | 83.08 | e | 79.12 | f | 70.87 | g | 61.77 | e | 78.06 | d |
1976 | 58.35 | h | 74.59 | g | 74.04 | e | 81.81 | d | 83.12 | f | 93.69 | d | 88.32 | f | 95.12 | f | 82.96 | e | 71.54 | g | 62.79 | f | 58.42 | e | 78.18 | g |
1977 | 56.44 | f | 67.48 | g | 71.92 | e | 78.92 | e | 89.50 | g | 95.81 | d | 97.68 | f | 99.26 | d | 96.12 | e | 80.83 | h | 71.44 | e | 66.43 | j | 85.58 | f |
1978 | 53.68 | f | 54.65 | e | 74.04 | d | 85.48 | e | 90.76 | f | 93.42 | d | 97.88 | f | 94.70 | d | 82.40 | e | 77.96 | f | 66.25 | f | 61.27 | i | 80.78 | f |
1979 | 48.48 | f | 61.00 | e | 71.30 | d | 81.20 | e | 85.58 | e | 91.15 | d | 96.76 | f | 94.36 | c | 89.33 | 84.77 | 62.63 | 61.61 | 78.29 | b | ||||
1980 | 61.20 | a | 61.79 | 71.03 | 77.59 | a | 86.43 | c | 98.40 | 100.39 | 94.13 | 85.53 | 73.97 | 63.17 | a | 58.70 | a | 77.69 | ||||||||
1981 | 55.77 | 65.32 | 65.00 | 77.57 | 83.00 | 92.80 | 96.58 | 90.77 | 88.87 | 75.81 | 74.60 | 65.48 | 77.63 | |||||||||||||
1982 | 59.08 | f | 61.35 | e | 72.55 | 76.47 | 83.39 | 92.17 | 98.19 | 96.77 | 93.41 | a | 80.63 | a | 65.48 | a | 56.10 | a | 79.68 | a | ||||||
1983 | 55.77 | 61.96 | a | 69.00 | 75.00 | 87.97 | b | 90.13 | 96.94 | 96.90 | 91.20 | 80.93 | a | 71.76 | a | 50.04 | c | 77.30 | ||||||||
1984 | 48.10 | 63.83 | 70.16 | 78.93 | 87.65 | 89.87 | 93.23 | 94.00 | 87.00 | 73.90 | b | 63.31 | a | 58.61 | 75.71 | |||||||||||
1985 | 52.07 | a | 56.15 | a | 69.77 | 81.57 | 92.52 | 90.34 | a | 93.94 | 98.39 | 88.34 | a | 74.65 | 70.87 | 58.59 | b | 77.27 | ||||||||
1986 | 62.32 | 66.18 | 75.55 | 84.83 | 88.19 | 89.27 | 94.35 | 92.58 | 85.40 | 72.77 | 65.50 | 55.45 | 77.70 | |||||||||||||
1987 | 57.23 | 59.86 | 63.55 | 74.70 | 82.57 | a | 87.53 | 92.11 | c | 95.18 | c | 86.80 | 82.13 | 68.43 | 57.96 | e | 75.67 | |||||||||
1988 | 52.97 | a | 62.86 | a | 72.34 | b | 80.83 | 85.65 | 92.57 | 91.87 | 94.13 | 88.57 | 80.50 | a | 74.00 | 58.00 | 77.86 | |||||||||
1989 | 60.94 | 58.82 | 73.23 | 82.73 | 91.81 | 93.52 | a | 96.84 | 93.61 | 85.70 | 82.65 | 70.90 | 52.39 | 78.59 | ||||||||||||
1990 | 62.58 | 66.89 | 67.35 | 78.17 | 87.26 | 100.23 | 90.23 | 89.55 | 86.43 | 78.87 | 70.72 | a | 57.43 | a | 77.98 | |||||||||||
1991 | 52.65 | 63.07 | 73.00 | 81.97 | 92.16 | 95.40 | 92.10 | 92.03 | 80.73 | 80.32 | 61.76 | a | 57.87 | 76.92 | ||||||||||||
1992 | 53.81 | 64.10 | 71.87 | 77.03 | a | 79.81 | 90.60 | 94.10 | 91.29 | 88.57 | 81.52 | 64.28 | a | 62.71 | c | 76.64 | ||||||||||
1993 | 56.13 | 63.24 | c | 71.19 | 79.83 | 87.71 | 93.57 | 96.19 | 95.94 | 85.47 | 78.33 | a | 64.33 | 61.52 | b | 77.79 | ||||||||||
1994 | 59.71 | 62.29 | 72.42 | 80.63 | 86.26 | 100.90 | 98.74 | 96.03 | 88.38 | a | 79.97 | 70.80 | 62.16 | 79.86 | ||||||||||||
1995 | 58.87 | 67.75 | 68.45 | 79.33 | 86.39 | 93.17 | a | 97.81 | 95.10 | 86.27 | 84.81 | 69.70 | 61.03 | 79.06 | ||||||||||||
1996 | 61.39 | 66.62 | 68.50 | a | 79.70 | 96.90 | 98.27 | 96.84 | 92.00 | 84.34 | a | 80.35 | 69.00 | 63.61 | 79.79 | |||||||||||
1997 | 55.07 | a | 57.71 | 73.13 | 71.83 | 84.48 | 90.13 | 96.65 | 95.68 | 90.40 | 79.90 | 65.93 | a | 55.97 | 76.41 | |||||||||||
1998 | 64.74 | 64.00 | 69.39 | 79.13 | 95.61 | 101.93 | 102.06 | 94.45 | 95.27 | 81.60 | a | 71.57 | 60.65 | 81.70 | ||||||||||||
1999 | 65.81 | 71.89 | 71.52 | 82.40 | 89.03 | 93.27 | 96.68 | 99.29 | 90.17 | 83.03 | a | 74.33 | 61.19 | 81.55 | ||||||||||||
2000 | 64.68 | 72.76 | 77.13 | a | 83.80 | 95.97 | b | 90.97 | 97.30 | a | 96.58 | 94.27 | 75.42 | 60.40 | 54.45 | 80.31 | ||||||||||
2001 | 53.32 | 63.86 | 64.65 | 84.34 | a | 91.87 | 98.73 | 100.87 | 96.61 | 90.00 | 83.52 | 68.20 | 60.10 | 79.67 | ||||||||||||
2002 | 62.81 | 60.50 | 70.42 | 83.73 | 90.23 | a | 94.62 | a | 95.10 | a | 98.47 | a | 90.73 | 76.00 | 63.83 | 57.58 | 78.67 | |||||||||
2003 | 61.32 | 61.39 | 73.61 | 83.80 | 91.26 | 93.77 | 94.71 | 96.80 | a | 86.27 | 80.90 | 69.00 | a | 64.71 | 79.80 | |||||||||||
2004 | 59.77 | 60.37 | b | 71.81 | 75.50 | 91.13 | 95.97 | 94.10 | 92.40 | a | 85.60 | 77.42 | 62.76 | e | 57.46 | g | 78.80 | a | ||||||||
2005 | 62.28 | b | 57.04 | e | 69.56 | d | 82.38 | d | 84.83 | g | 94.19 | d | 94.56 | f | 92.00 | d | 94.64 | e | 80.28 | f | 71.46 | f | 64.10 | j | 78.87 | e |
2006 | 68.22 | h | 70.00 | g | 75.77 | e | 86.05 | j | 94.59 | i | 96.62 | d | 98.72 | f | 94.11 | d | 87.88 | f | 79.96 | f | 71.57 | i | 62.24 | j | 88.83 | i |
2007 | 53.29 | n | 63.14 | 73.18 | c | 73.90 | 77.83 | b | 88.86 | i | 90.13 | 92.19 | 87.67 | 84.35 | 68.07 | 60.97 | 77.14 | b | ||||||||
2008 | 57.32 | 68.24 | 72.55 | 81.80 | 90.00 | 99.43 | 91.13 | 91.73 | a | 82.50 | 78.19 | 69.03 | 61.32 | 78.60 | ||||||||||||
2009 | 63.40 | a | 69.54 | 72.26 | 80.34 | a | 89.71 | 95.13 | 94.62 | b | 96.29 | 87.50 | 78.77 | 71.93 | 56.63 | a | 79.68 | |||||||||
2010 | 57.55 | 56.54 | d | 71.10 | 80.20 | 87.16 | 100.23 | 90.61 | 100.90 | 91.33 | 85.13 | 72.64 | b | 64.87 | a | 79.86 | ||||||||||
2011 | 60.16 | 63.79 | 82.32 | 91.14 | b | 92.39 | 104.93 | 102.33 | a | 103.45 | 93.73 | 83.19 | 70.50 | 51.55 | 83.29 | |||||||||||
2012 | 62.84 | 63.48 | 76.94 | 88.90 | 90.61 | 101.17 | 97.35 | 99.68 | 89.83 | 81.32 | c | 76.37 | c | 64.10 | 82.72 | |||||||||||
2013 | 56.90 | 65.61 | 74.45 | 81.23 | 90.45 | 99.77 | 93.69 | b | 99.19 | 91.40 | e | ----- | z | ----- | z | ----- | z | 83.63 | c | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 59.17 | 63.01 | 72.13 | 80.66 | 88.42 | 94.72 | 95.60 | 94.89 | 88.21 | 79.78 | 68.53 | 59.55 | 78.83 | |||||||||||||
S.D. | 4.63 | 4.03 | 3.98 | 3.90 | 4.00 | 3.81 | 3.25 | 3.13 | 3.60 | 3.37 | 4.21 | 4.13 | 1.91 | |||||||||||||
SKEW | -0.09 | 0.20 | 0.30 | 0.14 | -0.29 | 0.61 | -0.02 | 0.44 | 0.24 | -0.33 | -0.20 | -0.16 | 0.46 | |||||||||||||
MAX | 70.61 | 72.76 | 82.32 | 91.14 | 96.90 | 104.93 | 102.33 | 103.45 | 96.12 | 85.13 | 76.37 | 69.53 | 83.29 | |||||||||||||
MIN | 48.10 | 54.65 | 63.55 | 71.83 | 77.83 | 87.53 | 89.19 | 89.55 | 80.73 | 72.77 | 60.40 | 50.04 | 75.67 | |||||||||||||
YRS | 39 | 46 | 49 | 48 | 42 | 46 | 38 | 47 | 44 | 36 | 43 | 40 | 30 |