YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1961 | ----- | z | ----- | z | ----- | z | ----- | z | 86.52 | j | 99.73 | h | 101.33 | j | 95.17 | h | 86.20 | j | 77.05 | i | 56.63 | k | 38.52 | d | 38.52 | k |
1962 | 44.47 | a | 53.71 | 58.97 | 80.10 | 82.16 | 92.73 | 98.84 | 99.10 | a | 90.76 | a | 76.48 | 61.62 | a | 49.07 | b | 74.00 | ||||||||
1963 | 39.90 | j | 58.93 | a | 61.84 | 70.21 | a | 87.65 | 91.31 | a | 101.94 | 95.10 | 89.34 | a | 79.77 | a | 60.25 | b | 47.55 | 76.72 | a | |||||
1964 | 46.03 | 52.70 | b | 58.76 | b | 71.07 | 82.37 | a | 91.32 | b | 101.32 | 94.97 | 87.53 | 80.87 | 55.10 | 48.83 | b | 72.57 | ||||||||
1965 | 49.84 | 52.89 | 59.37 | a | 69.70 | c | 77.65 | 86.77 | 97.52 | b | 95.20 | a | 84.43 | 76.77 | 61.38 | a | 46.13 | 71.47 | ||||||||
1966 | 43.94 | 46.07 | 65.16 | 76.00 | a | 86.87 | 94.50 | b | 99.03 | 98.87 | 89.07 | 73.74 | 61.13 | 47.74 | 73.51 | |||||||||||
1967 | 44.90 | 57.04 | 68.06 | 69.33 | 81.20 | a | 89.20 | 100.55 | 96.45 | 86.53 | 78.19 | 61.87 | 37.35 | 72.56 | ||||||||||||
1968 | 36.06 | 57.72 | 63.50 | g | 68.39 | b | 82.64 | c | 94.67 | 96.97 | 90.29 | 88.31 | a | 75.22 | d | 58.13 | 40.68 | 71.74 | a | |||||||
1969 | 50.00 | 51.30 | e | 60.04 | d | 75.21 | a | 86.55 | 91.48 | a | 99.37 | a | 98.52 | 89.24 | a | 68.68 | 57.24 | a | 49.61 | 73.10 | ||||||
1970 | 49.10 | 57.96 | 60.57 | a | 68.43 | 85.57 | a | 93.57 | b | 97.83 | a | 97.61 | 86.50 | 70.71 | 59.20 | 47.19 | 72.85 | |||||||||
1971 | 47.65 | 54.79 | 64.42 | 73.70 | 79.55 | b | 94.62 | a | 101.03 | 95.06 | 87.17 | 69.57 | a | 54.30 | 42.06 | 71.99 | ||||||||||
1972 | 49.52 | 58.67 | b | 72.19 | 76.37 | 84.73 | a | 92.68 | b | 100.61 | 94.70 | a | 85.90 | a | 67.97 | 52.13 | 41.40 | a | 73.07 | |||||||
1973 | 36.10 | a | 49.25 | 56.26 | 69.00 | a | 82.70 | a | 92.00 | 98.40 | a | 96.39 | 86.50 | 75.33 | a | 58.60 | 50.57 | a | 70.92 | |||||||
1974 | 41.03 | a | 50.54 | 67.81 | 71.03 | 87.19 | 99.00 | 96.97 | a | 96.10 | a | 87.50 | 73.19 | 57.03 | 46.00 | 72.78 | ||||||||||
1975 | 44.68 | 50.39 | 58.29 | 65.03 | 78.81 | 91.63 | 96.83 | a | 94.87 | a | 86.23 | 73.00 | 56.97 | 46.97 | 70.31 | |||||||||||
1976 | 46.65 | 57.75 | a | 60.42 | 72.70 | 83.77 | a | 94.46 | b | 97.53 | a | 95.23 | 84.93 | 71.83 | a | 59.47 | 48.32 | 72.76 | ||||||||
1977 | 44.65 | 56.82 | 61.32 | 77.00 | 78.70 | a | 96.53 | 96.80 | a | 96.19 | 89.73 | 77.19 | 61.14 | a | 56.57 | a | 74.39 | |||||||||
1978 | 48.76 | b | 53.04 | a | 64.87 | a | 72.66 | a | 80.18 | n | 90.25 | n | 100.69 | o | 97.43 | a | 86.83 | 77.29 | 54.97 | a | 37.37 | a | 65.91 | c | ||
1979 | 36.36 | c | 43.61 | 58.13 | a | 72.40 | ----- | z | 93.07 | 99.37 | a | 93.32 | 91.10 | a | 78.55 | 57.13 | 47.58 | 70.06 | a | |||||||
1980 | 48.19 | 53.93 | 60.26 | 66.00 | w | 79.10 | j | ----- | z | 98.83 | a | 95.94 | 87.52 | c | 69.52 | j | ----- | z | 53.48 | f | 74.11 | f | ||||
1981 | 51.80 | a | 56.54 | 61.35 | 76.60 | 81.41 | b | 95.83 | a | 97.37 | a | 92.84 | 86.03 | 69.52 | 59.07 | 49.48 | 73.15 | |||||||||
1982 | 47.00 | c | 49.30 | a | 61.50 | c | 72.04 | c | 81.11 | c | 90.97 | a | 95.45 | b | 91.52 | d | 85.32 | b | 68.29 | c | 55.17 | ----- | z | 72.51 | a | |
1983 | 47.71 | 55.00 | d | 61.21 | b | 65.21 | f | 79.71 | 89.67 | c | 94.14 | b | 94.65 | 88.67 | c | 73.37 | d | 58.72 | a | 51.32 | 72.20 | a | ||||
1984 | 45.67 | d | 51.35 | c | 62.35 | k | 71.31 | a | 88.52 | d | 91.96 | d | 96.09 | i | 90.95 | i | 90.22 | g | 66.87 | h | 56.55 | h | 46.67 | j | 69.76 | g |
1985 | 45.89 | d | 49.23 | b | 60.61 | c | 76.14 | a | 83.75 | c | 94.80 | 97.13 | 96.83 | a | 83.74 | c | 71.67 | a | 56.27 | 49.30 | a | 72.11 | ||||
1986 | 52.83 | a | 57.70 | a | 66.62 | e | 72.92 | e | 83.05 | j | 93.38 | i | 95.57 | q | 94.41 | i | 80.20 | e | 68.79 | c | 59.04 | c | 49.37 | d | 63.43 | d |
1987 | 44.72 | f | 52.92 | b | 60.38 | b | 75.38 | a | 81.40 | a | 96.07 | c | 96.62 | b | 93.44 | d | 87.88 | d | 76.92 | e | 59.62 | d | 45.48 | f | 78.06 | b |
1988 | 47.93 | d | 55.91 | f | 66.35 | e | 74.14 | h | 84.23 | e | 97.43 | b | 101.33 | a | 97.08 | e | 87.43 | b | 80.74 | d | 66.19 | c | 56.48 | j | 80.97 | c |
1989 | 53.70 | a | 59.43 | g | 73.80 | k | 80.17 | 85.54 | e | 95.44 | e | 102.68 | c | 94.43 | c | 92.09 | g | 75.50 | i | 62.48 | i | 52.56 | m | 85.33 | f | |
1990 | 49.70 | u | 55.89 | i | 65.79 | g | 75.90 | a | 82.71 | 95.04 | c | 91.82 | c | 96.32 | l | 87.93 | a | 75.42 | e | 57.57 | i | 43.17 | g | 84.80 | f | |
1991 | 44.04 | g | 56.96 | 58.23 | e | 71.32 | b | 81.06 | 91.18 | b | 96.61 | c | 95.34 | b | 88.96 | d | 77.10 | a | 52.67 | f | 44.00 | f | 79.64 | c | ||
1992 | 41.30 | a | 53.21 | 64.00 | c | 80.26 | c | 84.93 | c | 90.62 | q | 96.20 | f | 95.93 | b | 87.23 | d | ----- | z | 55.62 | f | 41.27 | e | 68.52 | d | |
1993 | 49.13 | h | 51.00 | u | 66.07 | b | 73.93 | a | 84.97 | a | 92.40 | 98.16 | 94.26 | 88.59 | a | 72.93 | a | 57.83 | a | 49.78 | d | 77.89 | b | |||
1994 | 53.03 | a | 49.93 | a | 67.23 | 74.13 | 83.48 | b | 100.52 | a | 101.71 | 100.13 | 89.77 | 72.13 | 54.83 | 49.87 | 74.73 | |||||||||
1995 | 46.97 | 61.68 | 63.65 | 70.30 | 77.29 | 90.03 | 99.79 | b | 98.42 | 91.13 | 76.03 | 64.93 | a | 53.27 | a | 74.46 | ||||||||||
1996 | 51.84 | 58.24 | 65.10 | 75.07 | 89.26 | 98.59 | a | 102.26 | 98.55 | 86.32 | b | 71.87 | a | 58.00 | 50.52 | b | 75.47 | |||||||||
1997 | 48.47 | a | 53.93 | 67.90 | 68.27 | 87.03 | 92.82 | m | 99.33 | a | 93.87 | 85.73 | 72.55 | 60.53 | 46.64 | c | 71.30 | a | ||||||||
1998 | 51.71 | 51.50 | 62.20 | a | 66.90 | 80.48 | 90.31 | a | 99.47 | a | 97.23 | 86.55 | a | 71.82 | c | 59.21 | a | 49.27 | a | 72.22 | ||||||
1999 | 54.10 | a | 57.04 | a | 69.54 | e | 66.53 | 81.17 | b | 93.91 | g | 95.83 | a | 94.10 | j | 86.93 | b | 78.61 | 64.54 | f | 52.11 | c | 71.32 | c | ||
2000 | 54.81 | d | 56.29 | a | 60.74 | d | 78.61 | b | 89.58 | g | 97.79 | f | 100.39 | h | 96.54 | e | 90.39 | g | 73.54 | e | 53.71 | f | 50.84 | f | 70.09 | f |
2001 | 47.84 | f | 52.48 | c | 64.88 | e | 73.78 | l | 86.83 | g | 96.84 | e | 97.11 | d | 95.08 | f | 92.12 | f | 80.04 | g | 62.78 | c | 48.07 | a | 70.36 | f |
2002 | 49.85 | d | 55.54 | d | 62.17 | b | 79.69 | d | 84.63 | a | 99.00 | 102.57 | c | 100.10 | 85.57 | 70.90 | 57.72 | e | 46.48 | 74.52 | ||||||
2003 | 53.28 | b | 53.89 | 63.47 | a | 70.93 | a | 84.83 | a | 95.80 | e | 104.19 | 98.08 | e | 89.73 | 78.80 | a | 55.21 | b | 47.21 | c | 74.62 | ||||
2004 | 45.59 | b | 47.04 | b | 74.19 | j | 71.24 | a | 85.70 | d | 94.14 | a | 98.50 | e | 94.61 | c | 86.57 | b | 71.39 | 54.45 | a | 47.27 | a | 72.41 | a | |
2005 | 50.73 | a | 52.43 | 61.90 | 71.68 | b | 84.55 | 90.96 | b | 101.63 | a | 91.30 | a | 87.25 | b | 74.15 | d | 58.79 | b | 48.17 | a | 72.80 | ||||
2006 | 49.58 | 56.83 | e | 59.03 | 74.12 | d | 87.10 | 98.41 | a | 99.58 | 94.71 | 84.17 | 68.74 | 58.60 | 46.13 | 73.08 | ||||||||||
2007 | 44.39 | 55.71 | 65.17 | b | 73.26 | g | 83.80 | a | 97.45 | a | 100.27 | a | 96.26 | 88.89 | b | 72.94 | 62.00 | 44.59 | b | 73.77 | a | |||||
2008 | 43.97 | 52.66 | 65.64 | c | 72.13 | g | 79.29 | 96.30 | 98.35 | 95.94 | 88.62 | d | 76.03 | 60.22 | c | 46.48 | b | 73.05 | a | |||||||
2009 | 49.28 | b | 55.18 | 66.39 | c | 72.28 | a | 86.74 | 87.40 | 100.77 | 97.24 | b | 89.57 | 73.80 | a | ----- | z | 43.00 | c | 74.70 | a | |||||
2010 | 43.97 | 49.81 | b | 60.43 | a | ----- | z | 78.94 | 96.96 | b | 100.53 | a | 92.23 | 91.43 | 72.00 | b | 54.70 | ----- | z | 74.10 | b | |||||
2011 | 41.77 | r | 50.18 | q | 62.67 | p | ----- | z | ----- | z | ----- | z | 96.17 | a | ----- | z | ----- | z | 72.61 | 56.27 | ----- | z | 75.02 | i | ||
2012 | 48.90 | a | 52.59 | 60.41 | i | ----- | z | 85.68 | 97.87 | 95.74 | 95.77 | 88.83 | r | 75.16 | 60.07 | ----- | z | 76.47 | d | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 47.32 | 53.74 | 62.92 | 72.95 | 83.35 | 93.97 | 98.80 | 95.75 | 87.45 | 73.96 | 58.52 | 46.98 | 73.06 | |||||||||||||
S.D. | 4.54 | 3.72 | 3.54 | 3.84 | 3.07 | 3.28 | 2.48 | 2.22 | 2.18 | 3.44 | 2.96 | 4.15 | 1.25 | |||||||||||||
SKEW | -0.73 | -0.42 | 0.42 | 0.18 | -0.15 | -0.11 | -0.23 | -0.22 | -0.61 | 0.15 | 0.27 | -0.59 | -0.14 | |||||||||||||
MAX | 54.81 | 61.68 | 72.19 | 80.26 | 89.26 | 100.52 | 104.19 | 100.13 | 91.43 | 80.87 | 66.19 | 56.57 | 75.47 | |||||||||||||
MIN | 36.06 | 43.61 | 56.26 | 65.03 | 77.29 | 86.77 | 91.82 | 90.29 | 80.20 | 67.97 | 52.13 | 37.35 | 70.31 | |||||||||||||
YRS | 44 | 46 | 44 | 42 | 44 | 43 | 46 | 45 | 45 | 46 | 42 | 40 | 24 |