YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1957 | ----- | z | ----- | z | 63.36 | f | 69.63 | 74.52 | 89.17 | 94.58 | 88.16 | 83.47 | 65.13 | 52.17 | 60.00 | c | 75.20 | c | ||||||||
1958 | 47.71 | 56.89 | 52.84 | 67.23 | 81.45 | 93.00 | a | 93.77 | a | 90.87 | 78.73 | 67.19 | 64.53 | 60.23 | 71.20 | |||||||||||
1959 | 55.79 | b | 55.04 | a | 64.00 | 71.46 | b | 79.74 | 90.27 | 89.27 | p | 86.50 | k | 85.97 | 74.03 | 60.69 | a | 52.29 | j | 70.78 | c | |||||
1960 | 48.16 | 49.72 | 65.35 | 75.30 | 81.46 | g | 88.63 | k | 87.27 | e | 91.70 | h | 85.56 | c | 72.83 | a | 63.37 | c | 42.65 | 65.58 | c | |||||
1961 | 49.56 | f | 58.21 | 62.00 | a | 74.50 | f | 83.68 | f | 90.41 | c | 90.79 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.21 | i | |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 88.87 | 95.60 | f | 88.35 | e | 84.52 | c | 78.36 | c | 62.86 | i | 53.24 | b | 78.67 | g | |
1964 | 50.86 | c | 43.25 | e | 56.96 | h | 71.23 | h | 81.45 | k | 90.22 | l | 94.65 | 92.08 | f | 82.42 | d | 77.23 | e | 62.24 | m | 53.42 | g | 69.68 | g | |
1965 | 57.69 | e | 49.24 | k | 56.80 | f | 74.04 | f | 78.13 | h | 84.33 | i | 92.75 | s | 86.68 | f | 79.48 | i | 76.00 | d | 65.00 | j | 58.45 | i | 66.85 | j |
1966 | 44.81 | d | 52.31 | b | 69.47 | l | 73.39 | b | 82.73 | e | 86.14 | a | 94.86 | i | 85.09 | h | 82.00 | d | 72.63 | d | 66.08 | e | 55.12 | e | 68.36 | c |
1967 | 54.89 | c | 59.38 | d | 70.69 | b | 74.50 | h | 80.75 | c | 86.92 | f | 91.81 | e | 85.85 | k | 79.64 | h | 76.85 | d | 60.35 | g | 45.00 | h | 72.39 | f |
1968 | 50.22 | d | 56.48 | d | 59.54 | g | 68.50 | 80.52 | f | 91.81 | i | 86.43 | c | 85.72 | f | 83.04 | f | 76.27 | e | 55.82 | h | 53.80 | u | 67.58 | g | |
1969 | 59.80 | a | 55.83 | e | 54.77 | e | 74.67 | c | 82.29 | g | 86.69 | d | 93.62 | g | 92.00 | r | 81.73 | h | 68.19 | d | 58.81 | i | 56.10 | k | 66.66 | f |
1970 | 48.39 | h | 60.11 | i | 59.00 | d | 71.57 | i | 82.78 | h | 86.33 | i | 91.92 | f | 90.82 | i | 85.05 | h | 70.08 | f | 63.60 | j | 59.46 | c | 59.23 | j |
1971 | 50.64 | f | 55.58 | d | 69.00 | f | 71.91 | h | 82.38 | j | 93.14 | h | 90.14 | j | 86.53 | p | 79.36 | h | 70.64 | f | 64.58 | k | 49.41 | i | 55.58 | k |
1972 | 57.23 | e | 61.58 | j | 72.62 | g | 79.79 | p | 81.19 | e | 89.00 | g | 89.33 | m | 86.00 | q | 80.07 | o | 66.06 | o | 54.44 | n | 54.06 | n | 69.21 | j |
1973 | 47.21 | g | 52.10 | g | 61.28 | m | 64.50 | j | 79.90 | k | 87.68 | k | 88.71 | n | 91.55 | i | 83.71 | m | 78.05 | j | 68.04 | g | 57.71 | n | ----- | z |
1974 | 54.57 | j | 59.62 | g | 70.08 | g | 75.06 | l | ----- | z | ----- | z | ----- | z | 85.06 | m | 78.18 | h | 68.90 | 59.80 | e | 50.52 | 59.74 | i | ||
1975 | 51.46 | c | 54.68 | f | 62.39 | 68.17 | 78.06 | 89.24 | a | 84.97 | 88.81 | 79.44 | l | 76.16 | 60.70 | g | 56.34 | b | 72.84 | c | ||||||
1976 | 55.24 | b | 64.32 | j | 64.52 | 72.00 | ----- | z | 88.62 | f | 85.66 | b | 87.87 | 78.32 | b | 66.48 | 54.50 | d | 54.03 | b | 68.74 | c | ||||
1977 | 48.84 | 58.30 | h | 60.26 | 69.83 | 79.68 | 92.17 | a | 92.03 | 89.65 | 85.03 | 74.03 | 63.82 | b | 59.26 | 74.05 | a | |||||||||
1978 | 49.78 | d | ----- | z | 64.48 | 75.23 | 80.67 | a | 88.63 | 93.07 | a | 87.42 | 77.04 | d | 72.94 | 55.67 | c | 46.68 | f | 74.49 | b | |||||
1979 | 44.07 | a | 55.38 | b | 62.10 | 68.83 | r | 78.77 | 83.72 | e | 91.35 | 86.60 | a | 82.62 | d | 77.03 | 56.21 | f | 55.42 | 71.71 | b | |||||
1980 | 51.83 | g | 64.11 | k | 63.59 | b | 69.13 | 77.94 | 95.43 | b | 96.75 | g | 89.80 | a | 83.50 | f | 70.34 | b | 58.04 | c | 58.04 | h | 74.90 | e | ||
1981 | 53.10 | b | 63.38 | b | 60.11 | c | 76.50 | 78.42 | 91.59 | a | 91.22 | d | 85.68 | 82.16 | e | 69.59 | d | 65.44 | c | 59.67 | d | 73.07 | ||||
1982 | 54.76 | f | 58.47 | i | 64.07 | a | 72.28 | e | 79.48 | 88.07 | 92.58 | 89.83 | b | 81.59 | a | 70.73 | a | 57.86 | a | 47.50 | i | 77.39 | c | |||
1983 | 50.90 | b | 57.90 | h | 61.03 | a | 63.00 | b | 76.13 | 85.07 | 90.11 | d | 90.32 | c | 86.46 | b | 70.35 | 59.38 | a | 50.04 | e | 71.16 | a | |||
1984 | 47.65 | 57.62 | e | 61.90 | b | 70.52 | c | 82.93 | c | 85.04 | d | 89.56 | f | 81.73 | e | 78.56 | e | 63.77 | a | 57.48 | a | 48.48 | d | 66.88 | a | |
1985 | 45.30 | a | 53.65 | e | 62.03 | a | 72.57 | 78.29 | c | 84.48 | c | 88.41 | b | 89.52 | d | 79.15 | d | 68.48 | f | 61.84 | e | 53.69 | b | 69.90 | a | |
1986 | 57.35 | 55.58 | b | 66.34 | b | 73.12 | d | 78.32 | c | 84.89 | k | 86.93 | d | 85.78 | h | 78.52 | a | 66.10 | a | 54.07 | a | 47.07 | d | 66.34 | b | |
1987 | 48.10 | a | 51.67 | a | 59.61 | 68.86 | a | 74.83 | a | 83.50 | b | 89.23 | a | 85.48 | 79.21 | b | 75.17 | b | 59.52 | a | 48.48 | 68.64 | ||||
1988 | 50.00 | d | 57.52 | 63.45 | b | 72.00 | d | 77.48 | b | 86.86 | a | 88.37 | l | 84.14 | c | 80.25 | b | 75.57 | c | 64.41 | a | 48.13 | h | 71.17 | b | |
1989 | 54.17 | a | 51.32 | 69.52 | b | 74.64 | e | 84.07 | b | 87.96 | c | 89.63 | d | 85.96 | e | 77.65 | d | 73.14 | b | 63.07 | 50.42 | e | 71.80 | |||
1990 | 52.54 | c | 56.81 | a | 60.84 | 69.18 | b | 78.34 | b | 95.53 | 85.76 | b | 84.07 | a | 80.80 | e | 74.79 | c | 64.10 | a | 49.42 | e | 71.02 | |||
1991 | 50.61 | c | 59.24 | c | 62.71 | 72.97 | 83.68 | c | 89.07 | 84.11 | d | 83.76 | b | 76.14 | b | 73.61 | c | 54.33 | 46.38 | e | 69.72 | |||||
1992 | 45.53 | a | 56.52 | b | 64.31 | b | 74.45 | a | 72.04 | e | 86.00 | d | 90.33 | g | 88.00 | 83.96 | b | 74.65 | e | 55.86 | b | 50.77 | 68.37 | a | ||
1993 | 53.71 | c | 53.92 | b | 64.03 | 72.41 | a | 79.89 | c | 89.96 | d | 92.85 | e | 86.10 | b | 84.00 | 68.58 | e | 57.63 | 54.88 | e | 71.50 | ||||
1994 | 57.15 | d | 57.23 | b | 65.54 | c | 72.62 | a | 78.89 | c | 94.65 | g | 93.73 | i | 90.70 | d | 82.87 | g | 70.79 | g | 61.31 | a | 53.83 | g | 69.06 | e |
1995 | 53.55 | k | 61.82 | f | 65.00 | g | 68.79 | a | 80.54 | e | 87.41 | a | 91.65 | h | 91.93 | c | 81.92 | d | 76.12 | e | 66.28 | e | 55.35 | h | 79.00 | e |
1996 | 58.10 | j | 59.61 | a | 64.43 | h | 73.34 | a | 89.82 | c | 91.37 | c | 87.84 | f | 86.46 | c | 78.58 | f | 71.65 | h | 63.45 | j | 59.95 | i | 80.12 | g |
1997 | 47.28 | f | 49.00 | d | 67.86 | b | 62.62 | a | 76.91 | h | 84.93 | b | 91.48 | f | 88.36 | f | 83.96 | b | 70.63 | a | 58.04 | d | 43.52 | h | 68.15 | e |
1998 | 54.93 | a | 54.63 | a | 60.53 | a | 68.63 | c | 83.93 | b | 92.45 | a | 92.04 | g | 86.31 | e | 86.52 | a | 69.65 | e | 63.93 | b | 53.86 | i | 72.15 | b |
1999 | 61.36 | c | 64.79 | d | 63.56 | d | 71.52 | e | 76.67 | d | 84.12 | d | 87.81 | e | 89.93 | d | 80.12 | d | 77.43 | h | 69.38 | d | 52.42 | e | 72.88 | a |
2000 | 57.71 | g | 66.60 | d | 64.30 | a | 74.37 | 86.73 | e | 87.22 | c | 95.14 | j | 93.21 | b | 88.46 | b | 69.57 | c | 52.11 | c | 50.26 | h | 75.84 | c | |
2001 | 44.55 | 58.57 | g | 60.07 | c | 76.07 | b | 82.14 | j | 91.12 | d | 94.43 | j | 88.61 | c | 85.56 | c | 77.07 | c | 60.82 | b | 52.92 | e | 70.75 | c | |
2002 | 55.89 | c | 55.96 | a | 64.35 | e | 78.12 | d | 81.44 | m | 93.81 | d | ----- | z | 91.43 | c | 80.52 | a | 66.60 | f | 60.16 | e | 49.77 | a | 70.00 | c |
2003 | 59.70 | a | 53.57 | e | 65.10 | b | 74.79 | a | 83.29 | 87.83 | 95.95 | j | 89.68 | c | 85.38 | f | 75.48 | d | 62.22 | c | 57.70 | h | 72.41 | c | ||
2004 | 54.57 | c | 49.78 | f | 67.31 | e | 66.59 | c | 82.61 | c | 88.57 | b | 90.82 | i | 84.53 | a | 81.11 | b | 70.54 | e | 54.04 | c | 53.74 | d | 70.36 | b |
2005 | 56.50 | c | 52.41 | a | 59.33 | j | 70.68 | b | 78.28 | b | 92.42 | d | 92.63 | l | 84.77 | 84.93 | c | 69.50 | g | 66.63 | c | 54.96 | e | 71.29 | c | |
2006 | 58.06 | 60.77 | b | 61.65 | e | 77.60 | 85.86 | b | 92.63 | c | 90.60 | p | 83.62 | j | 74.28 | a | 68.48 | f | 65.96 | g | 51.61 | c | 70.31 | d | ||
2007 | 42.14 | c | 58.00 | b | 65.63 | a | 67.56 | e | 74.74 | d | 87.68 | b | 89.55 | i | 90.86 | c | 82.70 | g | 77.71 | g | 65.74 | c | 51.93 | d | 67.14 | c |
2008 | 50.07 | b | 60.38 | c | 66.66 | b | 73.16 | e | 81.52 | d | 94.18 | h | 84.86 | j | 85.39 | c | 81.25 | b | 72.83 | g | 63.24 | a | 55.88 | e | 68.62 | c |
2009 | 57.72 | b | 63.04 | a | 68.14 | b | 72.72 | e | 83.68 | f | ----- | z | 94.33 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.40 | h |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 52.26 | 56.32 | 63.25 | 71.62 | 80.06 | 88.88 | 89.74 | 87.82 | 81.79 | 72.32 | 60.49 | 52.96 | 70.99 | |||||||||||||
S.D. | 4.96 | 4.61 | 3.53 | 3.51 | 3.66 | 3.25 | 3.27 | 2.73 | 3.31 | 3.87 | 4.50 | 4.34 | 1.44 | |||||||||||||
SKEW | -0.17 | -0.22 | -0.57 | -0.52 | 0.32 | 0.22 | -0.12 | -0.16 | -0.14 | -0.40 | -0.18 | -0.11 | -0.33 | |||||||||||||
MAX | 61.36 | 66.60 | 70.69 | 78.12 | 89.82 | 95.53 | 94.65 | 93.21 | 88.46 | 78.36 | 69.38 | 60.23 | 73.07 | |||||||||||||
MIN | 42.14 | 43.25 | 52.84 | 62.62 | 72.04 | 83.50 | 84.11 | 81.73 | 74.28 | 63.77 | 52.11 | 42.65 | 68.64 | |||||||||||||
YRS | 39 | 35 | 39 | 41 | 36 | 37 | 22 | 34 | 35 | 37 | 36 | 30 | 7 |