YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 81.77 | s | 70.42 | 57.42 | 49.47 | 59.10 | i | |||
1952 | 48.60 | 52.00 | 54.06 | 66.95 | 78.06 | 82.08 | 89.14 | j | 90.61 | 84.77 | 78.18 | q | 51.31 | i | 49.16 | 67.37 | c | |||||||||
1953 | 53.31 | 53.80 | m | 62.71 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.77 | q | 50.04 | e | 51.67 | j | |
1954 | 50.93 | h | 64.07 | u | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | 50.81 | h | 60.81 | 65.78 | 75.76 | 85.52 | d | 92.24 | j | 88.50 | 87.57 | a | 69.35 | a | 57.72 | 51.52 | a | 71.39 | c | |||||
1957 | ----- | z | 61.38 | o | 61.44 | 67.16 | a | 72.66 | 88.68 | 93.55 | c | 88.47 | 82.22 | 68.72 | h | 54.85 | 52.82 | a | 73.54 | c | ||||||
1958 | 51.76 | 57.04 | 56.37 | 66.73 | 80.79 | 85.05 | a | 91.59 | b | 90.74 | 84.47 | 76.56 | e | 58.83 | a | 53.18 | 71.09 | |||||||||
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 89.15 | n | 82.17 | 72.70 | d | 59.78 | c | 52.31 | 66.74 | h | ||
1960 | 46.55 | ----- | z | 62.61 | ----- | z | ----- | z | 89.10 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.09 | i | ||
1961 | ----- | z | 55.19 | a | 57.69 | b | 66.87 | 72.25 | q | 89.56 | n | 91.50 | g | 88.23 | 78.75 | 69.65 | a | 56.03 | 51.02 | 65.43 | d | |||||
1962 | 50.59 | b | 54.21 | 54.10 | 70.43 | a | 70.69 | 80.28 | 88.23 | 90.03 | 83.08 | 69.87 | 61.47 | 54.31 | 68.94 | |||||||||||
1963 | 47.95 | 60.00 | 58.38 | a | 62.70 | 76.19 | 79.17 | 89.89 | 87.54 | h | ----- | z | ----- | z | ----- | z | ----- | z | 67.75 | e | ||||||
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | 53.79 | 56.87 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.26 | i | 52.68 | 54.44 | i | |||
1966 | 48.16 | 49.84 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.00 | j | ||
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 | 57.91 | b | 66.70 | 71.18 | c | 84.79 | a | 93.77 | c | 89.41 | d | ----- | z | 73.00 | g | ----- | z | 59.05 | a | 74.69 | e | |
1981 | 61.00 | t | ----- | z | ----- | z | 68.17 | a | 76.77 | 90.50 | 93.35 | 92.61 | 84.79 | d | 67.90 | 62.07 | 55.00 | 76.80 | c | |||||||
1982 | 50.39 | c | 57.54 | d | 57.40 | a | 67.67 | a | 75.91 | b | 82.43 | a | 90.09 | b | 90.75 | a | 81.77 | 68.27 | 58.22 | 50.10 | 69.21 | |||||
1983 | 51.65 | 54.44 | b | 57.40 | 61.32 | 75.89 | 83.03 | a | 91.45 | a | 88.83 | b | ----- | z | 72.08 | e | 59.55 | b | 52.40 | f | 69.56 | b | ||||
1984 | 53.34 | 54.39 | a | 62.07 | a | 66.98 | 82.53 | b | ----- | z | ----- | z | 88.61 | c | 83.91 | c | 66.67 | a | 57.42 | 51.76 | h | 68.43 | c | |||
1985 | 49.04 | e | 52.30 | a | 57.03 | 70.86 | a | 77.10 | b | 86.87 | c | 91.57 | c | 89.48 | b | 74.96 | c | 71.05 | b | 57.00 | b | 51.15 | e | 69.04 | ||
1986 | 56.25 | a | 56.41 | a | 64.83 | b | 68.75 | b | 77.93 | a | 88.55 | a | 89.81 | b | 91.82 | 78.17 | 69.03 | b | 60.29 | a | 51.53 | 71.11 | ||||
1987 | 49.53 | 55.09 | 58.00 | a | ----- | z | 76.52 | c | 88.07 | c | 88.94 | 90.19 | b | 82.43 | c | 76.57 | c | 57.68 | 47.53 | a | 70.05 | a | ||||
1988 | 50.11 | 56.26 | 61.40 | b | 67.42 | e | 78.24 | d | 86.65 | c | 93.27 | c | 89.10 | a | 81.37 | 78.03 | a | 58.97 | a | 49.97 | a | 70.90 | ||||
1989 | 49.75 | a | 56.33 | a | 65.21 | b | 74.21 | a | 77.48 | c | 86.28 | 93.65 | 89.27 | 84.25 | 71.22 | a | 60.28 | a | 50.76 | 71.56 | ||||||
1990 | 50.35 | 52.52 | 62.85 | 71.52 | a | 75.48 | a | 88.95 | 91.26 | 88.10 | a | 86.95 | j | ----- | z | 60.82 | m | 48.70 | a | 69.97 | c | |||||
1991 | 52.16 | 61.36 | 56.77 | a | 66.80 | 75.13 | 82.71 | a | 91.76 | 90.35 | a | 83.95 | a | 74.32 | a | 59.64 | a | 53.89 | c | 70.74 | ||||||
1992 | 52.84 | 58.33 | 60.09 | b | 71.62 | a | 79.29 | 84.74 | c | 90.44 | 90.57 | b | 85.50 | 73.43 | c | 56.68 | b | 49.05 | b | 71.05 | ||||||
1993 | 54.10 | b | 54.85 | b | 61.07 | c | 66.88 | d | 78.86 | c | 83.69 | f | 88.30 | a | ----- | z | ----- | z | 72.91 | t | ----- | z | ----- | z | 67.34 | f |
1994 | 53.76 | n | ----- | 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 | 74.61 | q | 70.81 | d | 79.24 | b | 86.47 | a | 88.68 | t | ----- | z | ----- | z | 65.07 | x | 58.82 | h | 54.16 | o | 78.84 | i |
2005 | 54.60 | e | 56.27 | o | 59.40 | k | 68.00 | o | 77.98 | j | 85.38 | a | 93.83 | b | 90.07 | b | 83.18 | k | 74.19 | e | 67.31 | q | ----- | z | 79.61 | g |
2006 | 50.83 | s | 56.69 | d | 58.46 | g | 69.40 | j | 80.16 | b | 90.90 | 95.84 | f | 91.09 | d | 82.00 | c | 71.11 | 62.47 | a | 49.83 | d | 73.03 | d | ||
2007 | 48.75 | g | 56.61 | e | 64.96 | h | 69.92 | f | 79.20 | a | 87.73 | 93.50 | 93.06 | e | 85.63 | 73.32 | 64.45 | 48.66 | 75.80 | c | ||||||
2008 | 50.47 | 53.24 | f | 61.85 | d | 68.78 | g | 75.19 | g | 89.21 | d | 92.62 | g | 92.36 | b | 86.85 | 73.10 | 62.75 | 51.60 | 71.02 | d | |||||
2009 | 54.32 | 55.71 | 63.02 | 68.48 | 83.15 | 84.95 | 96.03 | 92.42 | 87.83 | 70.45 | 62.32 | 49.65 | 72.36 | |||||||||||||
2010 | 53.95 | 56.09 | 59.39 | 66.25 | 74.21 | 86.46 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.06 | f | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 51.29 | 55.52 | 59.54 | 67.87 | 77.14 | 85.95 | 91.71 | 90.19 | 83.16 | 71.79 | 59.36 | 51.32 | 70.60 | |||||||||||||
S.D. | 2.49 | 2.57 | 3.06 | 2.84 | 3.07 | 3.02 | 2.13 | 1.47 | 3.13 | 2.97 | 2.47 | 2.50 | 1.15 | |||||||||||||
SKEW | 0.08 | 0.08 | 0.05 | -0.03 | -0.19 | -0.43 | 0.02 | 0.39 | -0.83 | 0.39 | 0.23 | 1.19 | -0.33 | |||||||||||||
MAX | 56.25 | 61.36 | 65.21 | 74.21 | 83.15 | 90.90 | 96.03 | 93.06 | 87.83 | 78.03 | 64.45 | 59.05 | 72.36 | |||||||||||||
MIN | 46.55 | 49.84 | 54.06 | 61.32 | 70.69 | 79.17 | 88.23 | 88.10 | 74.96 | 66.67 | 54.85 | 47.53 | 68.94 | |||||||||||||
YRS | 23 | 23 | 25 | 23 | 25 | 26 | 20 | 24 | 21 | 22 | 22 | 25 | 10 |