YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | 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 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 98.45 | b | 85.12 | d | 76.73 | e | 58.42 | d | 55.76 | f | 79.68 | h |
1986 | 63.25 | c | 58.45 | f | 69.41 | b | 72.62 | f | 83.04 | e | 96.70 | c | 95.08 | e | 98.24 | f | 80.96 | f | 74.62 | e | 66.24 | i | 56.38 | g | 80.35 | f |
1987 | 49.77 | i | 57.05 | h | 61.79 | g | 78.36 | e | 81.26 | l | 96.17 | g | 97.00 | k | 97.90 | k | 91.23 | h | 82.00 | g | 60.83 | g | 49.25 | g | 78.36 | k |
1988 | 48.58 | e | 60.54 | a | 64.70 | a | 69.40 | e | 82.38 | b | 93.53 | 101.19 | 94.22 | d | 85.62 | d | 85.67 | g | 61.88 | d | 55.05 | j | 76.20 | b | ||
1989 | 49.11 | c | 55.32 | c | 68.68 | c | 79.45 | a | 81.83 | a | 91.86 | a | 101.55 | 94.96 | e | 89.32 | h | 76.29 | c | 67.75 | b | 58.52 | b | 75.03 | a | |
1990 | 53.32 | 54.96 | 65.97 | 76.41 | a | 79.58 | 92.96 | b | 98.65 | 94.87 | a | 89.93 | a | 77.48 | b | 63.93 | a | 46.61 | 74.56 | |||||||
1991 | 52.06 | 66.79 | 56.55 | 69.70 | 76.93 | a | 86.53 | 98.55 | 95.68 | 88.10 | a | 80.32 | 62.59 | a | 51.03 | 73.74 | ||||||||||
1992 | 48.90 | 58.55 | 61.19 | 76.34 | a | 83.30 | d | 90.68 | b | 95.52 | d | 97.18 | c | 89.96 | d | 80.81 | 58.93 | a | 47.16 | 74.04 | ||||||
1993 | 49.00 | 50.96 | 65.87 | 72.31 | a | 82.55 | 88.00 | 95.65 | 95.78 | d | 89.75 | b | 76.27 | a | 58.73 | 52.90 | 73.15 | |||||||||
1994 | 57.07 | c | 51.50 | 68.55 | 71.86 | b | 80.68 | 97.55 | a | 100.55 | 99.19 | 90.21 | b | 72.19 | d | 51.52 | a | 52.45 | 74.44 | |||||||
1995 | 47.97 | 67.18 | 60.00 | 68.43 | 75.11 | d | 86.46 | b | 97.36 | c | 98.04 | c | 92.57 | 79.77 | 70.83 | 56.68 | 75.03 | |||||||||
1996 | 55.48 | 60.76 | 66.52 | 75.00 | a | 85.03 | 96.83 | 101.23 | 100.10 | 87.50 | 75.32 | 62.17 | 52.10 | 76.50 | ||||||||||||
1997 | 49.55 | 57.58 | b | 70.74 | 70.53 | 89.03 | a | 91.30 | 96.43 | c | 97.40 | a | 86.93 | 75.39 | 64.62 | a | 50.90 | 75.03 | ||||||||
1998 | 55.32 | 49.93 | 61.68 | 64.97 | 76.11 | c | 86.92 | f | 96.93 | b | 97.36 | c | 85.20 | 72.00 | 61.86 | a | 54.74 | 70.55 | a | |||||||
1999 | 57.61 | 58.78 | a | 68.50 | a | 64.30 | 79.93 | a | 90.30 | 93.84 | 95.26 | 88.43 | 83.16 | 71.00 | 55.83 | a | 75.58 | |||||||||
2000 | ----- | z | 56.52 | b | 62.35 | 76.40 | 85.23 | a | 93.17 | 97.83 | a | 96.73 | e | 87.65 | d | 74.37 | d | 54.76 | a | 58.32 | 76.67 | a | ||||
2001 | 51.75 | c | 55.37 | a | 66.39 | 70.30 | 87.84 | 94.03 | 96.63 | a | 98.19 | 91.13 | 81.19 | 64.47 | 49.06 | 75.53 | ||||||||||
2002 | 52.52 | 59.43 | 63.94 | 78.40 | 85.47 | a | 97.63 | 103.77 | a | 99.35 | 89.04 | d | 74.26 | l | 64.14 | a | 52.26 | 76.90 | a | |||||||
2003 | 61.97 | 55.43 | 63.42 | 67.67 | 82.23 | 93.92 | e | 103.64 | c | 96.11 | d | 91.37 | 84.19 | 56.37 | 53.21 | b | 75.79 | |||||||||
2004 | 52.68 | 50.00 | 71.97 | 71.47 | 82.81 | 93.37 | 97.87 | a | 94.61 | 87.20 | 72.14 | b | 56.45 | a | 52.21 | b | 73.56 | |||||||||
2005 | 52.89 | c | 53.63 | a | 63.32 | c | 68.22 | c | 80.21 | c | 87.89 | b | 100.76 | b | 92.63 | a | 85.70 | 74.67 | a | 64.03 | 53.84 | 73.15 | ||||
2006 | 54.57 | a | 59.79 | 55.94 | 69.70 | 87.70 | a | 96.00 | a | 98.79 | c | 95.33 | d | 83.85 | d | 72.39 | h | 63.41 | h | 50.93 | c | 75.26 | b | |||
2007 | 49.68 | 58.86 | 69.55 | 72.80 | 84.17 | a | 94.44 | c | 100.86 | c | 95.38 | e | 87.20 | 73.96 | g | 68.24 | i | 47.23 | a | 76.02 | b | |||||
2008 | ----- | z | 54.38 | 65.84 | 73.00 | 79.04 | d | 95.31 | a | 100.97 | a | 100.00 | 91.53 | 78.33 | a | 67.57 | ----- | z | 80.60 | b | ||||||
2009 | 55.93 | a | 55.43 | 66.16 | 70.77 | 90.11 | d | 90.07 | a | 102.16 | 98.55 | 93.80 | 71.65 | 66.53 | 47.35 | 75.71 | ||||||||||
2010 | 51.35 | 54.71 | 62.10 | 69.29 | i | 78.55 | 94.43 | 103.10 | 98.16 | 91.77 | 74.84 | 59.50 | 53.87 | 74.76 | a | |||||||||||
2011 | 54.77 | a | 54.30 | a | 63.35 | 72.33 | 77.35 | 93.03 | 99.06 | 100.19 | 92.83 | a | 75.00 | c | 57.08 | d | 51.42 | 74.23 | ||||||||
2012 | 56.73 | e | 57.38 | 65.50 | a | 75.18 | b | 86.76 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.05 | h | 59.75 | s | 68.31 | g | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 53.42 | 56.72 | 64.93 | 72.13 | 82.42 | 92.75 | 99.12 | 96.95 | 88.85 | 76.67 | 61.96 | 52.21 | 74.67 | |||||||||||||
S.D. | 4.07 | 4.37 | 3.98 | 4.05 | 4.03 | 3.30 | 2.79 | 2.06 | 2.74 | 3.61 | 5.03 | 3.41 | 1.03 | |||||||||||||
SKEW | 0.73 | 0.68 | -0.44 | 0.03 | 0.07 | -0.41 | -0.04 | -0.08 | 0.00 | 0.51 | -0.05 | 0.08 | 0.04 | |||||||||||||
MAX | 63.25 | 67.18 | 71.97 | 79.45 | 90.11 | 97.63 | 103.77 | 100.19 | 93.80 | 84.19 | 71.00 | 58.52 | 76.50 | |||||||||||||
MIN | 47.97 | 49.93 | 55.94 | 64.30 | 75.11 | 86.46 | 93.84 | 92.63 | 83.85 | 71.65 | 51.52 | 46.61 | 73.15 | |||||||||||||
YRS | 24 | 25 | 26 | 25 | 26 | 24 | 25 | 25 | 24 | 22 | 23 | 22 | 15 |