YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.68 | f | 47.15 | 35.71 | 41.43 | j | ||
1973 | 37.83 | a | 44.52 | 45.34 | c | 50.05 | 57.05 | 60.43 | 67.52 | 62.39 | 62.40 | 52.18 | ----- | z | 44.08 | 53.07 | a | |||||||||
1974 | 35.81 | b | 41.45 | 45.34 | 49.55 | a | 52.21 | b | 61.95 | a | 64.76 | 66.90 | a | 66.22 | 53.90 | 46.30 | 43.15 | a | 52.29 | |||||||
1975 | 40.90 | 40.02 | 44.00 | 45.43 | 55.69 | 59.95 | a | 66.55 | 62.83 | b | 63.85 | 52.55 | 44.05 | 42.13 | a | 51.50 | ||||||||||
1976 | 41.31 | 41.14 | 43.00 | 48.27 | 55.71 | 57.71 | b | 65.00 | 63.63 | a | 62.90 | 53.08 | 47.02 | 38.73 | 51.46 | |||||||||||
1977 | 36.56 | 43.68 | 43.08 | a | 52.19 | a | 52.52 | 61.71 | a | 64.16 | 70.21 | 59.24 | a | 52.65 | a | 43.40 | 43.08 | 51.87 | ||||||||
1978 | 41.66 | 45.70 | a | 48.65 | 50.40 | 53.92 | 64.43 | a | 66.89 | 66.26 | 59.34 | a | 54.03 | 39.18 | 35.81 | 52.19 | ||||||||||
1979 | 30.83 | a | 40.96 | 49.21 | 50.53 | 57.43 | a | 62.38 | 67.19 | 65.66 | 64.41 | a | 56.00 | a | 44.20 | 44.10 | a | 52.74 | ||||||||
1980 | 35.87 | 42.64 | a | 45.19 | b | 52.55 | 55.26 | b | 58.05 | 65.31 | 63.16 | 60.78 | a | 53.63 | 47.10 | 42.38 | a | 51.83 | ||||||||
1981 | 43.42 | 42.37 | a | 47.76 | 50.27 | 55.38 | a | 58.76 | a | 64.73 | 69.13 | 62.02 | 50.98 | a | 46.26 | a | 41.78 | a | 52.74 | |||||||
1982 | 37.43 | a | 41.00 | a | 44.80 | d | 47.12 | 55.30 | a | 63.67 | 64.59 | b | 65.75 | a | 60.09 | a | 51.90 | a | 41.80 | b | 39.47 | b | 51.08 | |||
1983 | 41.31 | b | 46.60 | b | 49.39 | 51.20 | 58.33 | a | 59.82 | 63.85 | a | 66.18 | a | 58.77 | 51.58 | a | 47.31 | c | 35.02 | 52.45 | ||||||
1984 | 42.63 | 44.43 | 48.67 | a | 48.80 | 53.95 | 59.02 | 65.88 | a | 66.00 | a | 60.73 | 50.45 | a | 44.55 | a | 36.98 | a | 51.84 | |||||||
1985 | 35.55 | b | 39.28 | a | 43.72 | b | 51.81 | c | ----- | z | ----- | z | 70.26 | 65.28 | b | 58.36 | a | 51.04 | g | 36.78 | e | 35.20 | a | 48.47 | c | |
1986 | 44.09 | c | 42.88 | d | 51.00 | c | 49.18 | 56.08 | a | 64.50 | d | 62.97 | b | 69.69 | 58.78 | a | 55.42 | a | 47.22 | e | 40.90 | b | 53.56 | |||
1987 | 40.53 | 45.20 | 47.57 | a | 53.67 | d | 59.05 | b | 64.50 | 64.80 | a | 67.78 | b | 63.38 | b | 57.00 | 47.66 | a | 38.52 | c | 54.14 | |||||
1988 | 39.39 | d | 44.93 | 46.40 | a | 51.10 | d | 53.38 | e | 60.66 | a | 66.65 | a | 65.50 | 61.81 | a | 57.48 | 45.98 | d | 40.03 | a | 52.78 | ||||
1989 | 40.71 | c | 36.29 | d | 45.07 | b | 55.00 | b | 56.53 | 63.70 | 63.63 | a | 63.81 | 63.62 | a | 52.75 | c | 46.36 | b | 39.77 | c | 52.27 | ||||
1990 | 42.55 | c | 42.22 | e | 48.79 | b | 54.18 | b | 55.18 | a | 61.67 | c | 69.38 | b | 67.81 | g | 64.79 | d | 50.75 | e | 46.04 | g | 34.96 | g | 54.39 | c |
1991 | 40.45 | b | 47.52 | a | 44.66 | ----- | z | 52.67 | a | 58.32 | b | 67.43 | b | 67.38 | b | 65.85 | g | 54.12 | b | 46.31 | c | 42.00 | c | 52.09 | b | |
1992 | ----- | z | 48.79 | 51.74 | 53.60 | 61.85 | a | 65.05 | 68.55 | a | 67.60 | b | 60.23 | b | 54.83 | a | 45.28 | 38.40 | b | 55.99 | a | |||||
1993 | 37.02 | 40.88 | d | 48.86 | c | 51.06 | c | 60.00 | c | 60.70 | c | 61.81 | 66.74 | 63.62 | 56.33 | d | 39.46 | c | 40.98 | c | 52.29 | |||||
1994 | 44.09 | c | 40.65 | b | 49.70 | a | 52.33 | 58.92 | a | 59.79 | a | 67.90 | 66.20 | a | 65.09 | a | 51.03 | b | 39.90 | a | 41.31 | d | 53.08 | |||
1995 | 43.92 | a | 46.33 | d | 46.97 | a | 49.63 | 59.00 | b | 61.67 | d | 67.52 | f | 64.35 | a | 64.62 | 52.50 | a | 50.70 | c | 42.22 | b | 52.90 | a | ||
1996 | 41.03 | b | 41.26 | b | 47.18 | 52.07 | 53.34 | 61.20 | 70.21 | 67.38 | e | 59.40 | 51.63 | d | 44.56 | e | 40.96 | g | 53.57 | a | ||||||
1997 | 41.23 | g | 42.75 | f | 45.17 | a | 49.02 | d | 62.05 | b | 61.06 | c | 66.92 | a | ----- | z | ----- | z | ----- | z | 50.02 | e | 41.59 | h | 55.70 | f |
1998 | 44.16 | f | 46.69 | a | 49.70 | d | 52.10 | d | 56.35 | d | 63.31 | d | 70.69 | b | 68.77 | 66.17 | d | 53.16 | i | 47.62 | f | 39.70 | f | 59.22 | d | |
1999 | 41.52 | c | 43.29 | d | 45.70 | a | 50.21 | b | 54.42 | f | 60.62 | d | 66.65 | h | 67.95 | a | 63.20 | h | 54.59 | b | 49.48 | 43.50 | d | 50.76 | c | |
2000 | 40.17 | k | 43.73 | e | 45.08 | 53.12 | f | 57.52 | f | 64.39 | b | 65.78 | d | 65.70 | c | 62.39 | h | 53.43 | c | 42.87 | d | 41.11 | c | 52.76 | d | |
2001 | 41.54 | c | 41.74 | c | 48.37 | d | 49.39 | b | 61.07 | i | 59.83 | f | 65.75 | c | 65.91 | h | 63.44 | c | 52.81 | e | 47.76 | c | 41.41 | d | 50.25 | c |
2002 | 39.81 | j | 43.73 | b | 45.18 | f | 52.23 | b | 54.21 | e | 63.41 | c | 68.25 | g | 67.34 | b | 63.52 | j | 53.87 | a | 47.44 | d | 43.05 | b | 53.16 | d |
2003 | 46.46 | c | 45.00 | e | 48.19 | d | 49.45 | k | 56.02 | j | 64.83 | g | ----- | z | 67.75 | m | 64.25 | r | 57.87 | p | 43.24 | m | 41.36 | t | 46.55 | i |
2004 | 36.42 | s | 44.85 | l | 50.71 | j | 56.45 | h | 58.12 | o | 65.59 | n | 72.50 | t | 67.22 | v | ----- | z | 56.92 | s | ----- | z | 42.24 | n | ----- | z |
2005 | 41.03 | m | 44.86 | n | 50.65 | k | 51.83 | j | 57.85 | k | 59.62 | a | 67.52 | c | 68.61 | d | 61.27 | d | 54.69 | j | 44.50 | e | 38.12 | k | 60.30 | g |
2006 | 43.58 | e | 41.52 | g | 44.98 | g | 52.95 | h | 57.46 | c | 65.20 | e | 68.00 | f | 65.00 | i | 63.66 | b | 53.22 | a | 46.76 | e | 39.57 | a | 52.78 | e |
2007 | 38.35 | a | 44.52 | 49.33 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.43 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.23 | 43.21 | 46.94 | 50.82 | 56.25 | 61.57 | 66.31 | 66.36 | 62.18 | 53.38 | 45.25 | 40.37 | 52.36 | |||||||||||||
S.D. | 3.41 | 2.68 | 2.37 | 2.14 | 2.69 | 2.23 | 2.24 | 2.05 | 2.37 | 1.87 | 3.26 | 2.72 | 0.78 | |||||||||||||
SKEW | -0.67 | -0.17 | 0.11 | -0.29 | 0.50 | 0.05 | 0.21 | -0.16 | -0.04 | 0.50 | -0.82 | -0.61 | 0.56 | |||||||||||||
MAX | 46.46 | 48.79 | 51.74 | 55.00 | 62.05 | 65.20 | 70.69 | 70.21 | 66.22 | 57.48 | 50.70 | 44.10 | 54.14 | |||||||||||||
MIN | 30.83 | 36.29 | 43.00 | 45.43 | 52.21 | 57.71 | 61.81 | 62.39 | 58.36 | 50.45 | 36.78 | 35.02 | 51.08 | |||||||||||||
YRS | 28 | 31 | 30 | 28 | 27 | 30 | 28 | 28 | 27 | 28 | 30 | 28 | 17 |