YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 96.45 | 92.58 | 88.17 | 72.39 | 46.97 | 40.84 | 72.90 | f | ||||||
1949 | 28.84 | 35.86 | 60.29 | 74.50 | 78.48 | 85.73 | 96.55 | 94.55 | 87.23 | 66.35 | 59.77 | 41.26 | 67.45 | |||||||||||||
1950 | 38.32 | 50.75 | 58.07 | b | 71.03 | 77.00 | a | 90.40 | 93.06 | 92.27 | a | 79.29 | f | 78.58 | 57.23 | 48.71 | 68.68 | a | ||||||||
1951 | 42.26 | 47.18 | 57.65 | 69.79 | a | 78.61 | 86.13 | 98.42 | 90.35 | 85.37 | 68.77 | 48.83 | 37.06 | 67.54 | ||||||||||||
1952 | 32.16 | 44.90 | 50.94 | 69.97 | 80.23 | 88.97 | 95.19 | 95.39 | 86.47 | 76.97 | 50.90 | 39.68 | 67.65 | |||||||||||||
1953 | 38.35 | 48.64 | 61.68 | 66.93 | 73.10 | 91.63 | 97.19 | 91.13 | 88.90 | 70.48 | 54.90 | 37.26 | 68.35 | |||||||||||||
1954 | 43.00 | 59.14 | 57.48 | 75.87 | 82.61 | 89.00 | 97.32 | 93.48 | 85.93 | 71.96 | c | 58.83 | 38.59 | b | 71.10 | |||||||||||
1955 | 26.58 | 31.40 | m | 53.68 | 67.13 | 77.68 | 86.47 | 94.77 | 94.65 | 88.52 | a | 74.71 | 49.40 | 45.94 | 69.05 | a | ||||||||||
1956 | 46.90 | 47.66 | 61.55 | 69.17 | 81.19 | 92.90 | 94.19 | 89.81 | 89.83 | 73.00 | 49.83 | 39.23 | 69.60 | |||||||||||||
1957 | 37.52 | 47.64 | 61.13 | 64.23 | 74.10 | 88.40 | 92.97 | 90.29 | 85.23 | 69.13 | 48.57 | 43.61 | 66.90 | |||||||||||||
1958 | 42.26 | 53.50 | 55.52 | 67.93 | 85.42 | 92.90 | 96.00 | 98.68 | 86.90 | 75.29 | 57.07 | 50.03 | 71.79 | |||||||||||||
1959 | 43.61 | 51.54 | 59.90 | 71.77 | 79.77 | 94.13 | 98.29 | 92.42 | 82.53 | ----- | z | 54.33 | 43.29 | 70.14 | a | |||||||||||
1960 | 32.45 | 42.48 | 61.23 | 71.33 | 80.26 | 94.17 | 99.26 | 95.94 | 88.23 | 70.23 | 56.17 | 43.68 | 69.62 | |||||||||||||
1961 | 44.23 | 53.43 | 57.42 | 68.17 | a | 81.10 | a | 95.20 | 97.68 | 93.29 | 75.73 | 69.61 | 51.83 | 32.00 | 68.31 | |||||||||||
1962 | 35.61 | 51.35 | b | 54.97 | 73.63 | 78.87 | 88.77 | 93.74 | 93.65 | 84.70 | 72.68 | 58.57 | 42.94 | 69.12 | ||||||||||||
1963 | 26.68 | 56.21 | 58.58 | 67.80 | 83.84 | 86.83 | 96.94 | 91.74 | 87.33 | 76.77 | 57.30 | 41.77 | 69.32 | |||||||||||||
1964 | 41.55 | 46.66 | 53.77 | 65.83 | 77.26 | 86.30 | 97.97 | 91.55 | 83.90 | 76.45 | 50.53 | 41.42 | 67.77 | |||||||||||||
1965 | 45.94 | 48.32 | 56.10 | 65.67 | 74.23 | 83.77 | 92.94 | 90.71 | 77.50 | 74.26 | 59.23 | 39.68 | 67.36 | |||||||||||||
1966 | 38.68 | 44.21 | 61.65 | 70.93 | 83.10 | 89.80 | 96.32 | 94.58 | 85.07 | 70.90 | 58.07 | 41.61 | 69.58 | |||||||||||||
1967 | 33.68 | 52.61 | 64.61 | 66.07 | 76.55 | 83.63 | 95.23 | 95.16 | 85.73 | 74.03 | 58.37 | 31.03 | 68.06 | |||||||||||||
1968 | ----- | z | 50.17 | 62.48 | 63.07 | 77.29 | 90.57 | 94.03 | 87.19 | 82.10 | 70.55 | 52.83 | 35.70 | a | 69.64 | a | ||||||||||
1969 | 37.26 | 45.36 | 54.87 | 71.87 | 84.19 | 85.30 | 95.45 | 95.48 | 85.50 | 61.48 | 52.80 | 44.71 | 67.86 | |||||||||||||
1970 | 41.39 | 56.04 | 54.74 | 62.20 | 80.97 | 87.70 | 94.71 | 93.94 | 82.11 | b | 65.48 | 55.13 | 45.03 | 68.29 | ||||||||||||
1971 | 41.52 | 48.54 | 58.42 | 69.60 | 75.13 | 90.10 | 96.71 | 93.26 | 79.70 | 66.03 | 50.70 | 38.45 | 67.35 | |||||||||||||
1972 | 44.26 | 54.69 | 67.90 | 70.80 | 81.84 | 90.50 | 97.71 | 92.61 | 83.93 | 65.10 | 48.25 | b | 34.16 | 69.31 | ||||||||||||
1973 | 20.39 | c | 34.04 | 54.29 | 63.77 | 78.45 | 88.07 | 97.82 | n | ----- | z | ----- | z | ----- | z | ----- | z | 42.44 | o | 56.50 | f | |||||
1974 | 28.54 | c | 33.44 | c | 64.74 | d | 67.81 | c | 82.67 | j | ----- | z | 94.93 | a | 94.67 | g | 81.60 | o | 70.88 | e | 54.91 | h | 38.12 | n | 60.06 | f |
1975 | 32.21 | c | 44.46 | b | 55.37 | a | 62.12 | d | 72.72 | f | 85.29 | i | 94.77 | 91.59 | b | 84.10 | a | 68.69 | e | 52.07 | c | 42.66 | b | 62.80 | b | |
1976 | 42.07 | b | 53.72 | 55.59 | d | 68.43 | 79.26 | 89.08 | e | 98.05 | k | 94.10 | 87.22 | l | 69.97 | a | 56.81 | d | 44.85 | e | 65.39 | b | ||||
1977 | 41.17 | b | 56.00 | b | 57.69 | b | 74.84 | e | 76.52 | f | 98.04 | b | 97.04 | h | 94.89 | d | 86.35 | d | 73.36 | f | 55.71 | f | 47.50 | c | 69.56 | d |
1978 | 34.96 | d | 43.04 | b | 64.90 | k | 69.08 | d | 77.08 | e | 93.57 | 99.74 | d | 95.03 | b | 84.90 | a | 74.76 | b | 54.89 | c | 29.18 | c | 68.75 | a | |
1979 | 25.60 | a | 29.80 | h | 52.93 | a | 70.85 | c | 79.37 | l | 91.18 | b | 99.55 | 93.85 | d | 92.88 | f | 75.29 | g | 46.96 | g | 39.73 | e | 67.67 | e | |
1980 | 41.31 | b | 52.89 | a | 55.14 | b | 69.76 | a | 76.64 | c | 94.07 | b | 100.42 | 95.00 | a | 83.36 | s | 61.07 | q | 56.81 | d | 50.85 | d | 69.29 | b | |
1981 | 51.62 | b | 53.89 | a | 59.00 | b | 76.29 | f | 77.96 | d | 93.13 | o | 98.77 | a | 95.10 | a | 87.92 | e | 66.43 | a | 56.21 | a | 45.93 | d | 69.28 | b |
1982 | 36.00 | 46.48 | c | 59.33 | a | 68.57 | b | 78.94 | 90.46 | f | 95.27 | i | 92.43 | h | 80.15 | j | 65.13 | a | 50.04 | c | 42.60 | a | 55.89 | d | ||
1983 | 43.66 | b | 54.75 | d | 58.38 | b | 63.83 | a | 75.80 | a | 87.70 | c | 94.04 | c | 94.67 | d | 88.52 | c | 71.90 | 53.26 | k | 38.33 | a | 70.14 | a | |
1984 | 27.10 | a | 40.21 | e | 57.90 | b | 65.54 | b | 87.50 | g | 87.57 | 97.70 | a | 92.86 | b | 89.13 | o | 60.46 | g | 53.75 | f | 40.00 | 63.61 | d | ||
1985 | 35.95 | j | 42.00 | 60.57 | h | 72.04 | f | 81.87 | 95.37 | 98.13 | 97.16 | ----- | z | ----- | z | ----- | z | ----- | z | 82.91 | g | |||||
1986 | ----- | z | ----- | z | ----- | z | 69.87 | 79.03 | a | 95.77 | 95.87 | 96.52 | 79.43 | 67.67 | a | 55.67 | 45.84 | 76.18 | c | |||||||
1987 | 40.73 | a | 50.95 | g | 57.55 | b | 74.83 | a | 81.86 | b | 94.72 | a | 94.34 | b | 93.07 | a | 86.61 | b | 73.37 | d | 53.60 | 40.36 | c | 71.91 | a | |
1988 | 26.82 | c | 40.79 | 58.44 | f | 72.08 | f | 81.81 | d | 93.87 | 99.29 | 94.37 | a | 83.56 | c | 78.60 | a | 58.04 | c | 43.13 | a | 70.03 | b | |||
1989 | 30.03 | a | 44.88 | d | 66.32 | c | 78.69 | d | 81.84 | 90.86 | a | 100.42 | 92.06 | 87.85 | d | 72.79 | b | 60.14 | b | 48.07 | a | 71.16 | ||||
1990 | 45.23 | 53.85 | a | 65.54 | e | 75.85 | c | 80.77 | e | 96.07 | a | 97.52 | b | 94.48 | 87.78 | c | 72.44 | d | 55.41 | c | 39.59 | b | 72.04 | |||
1991 | 30.81 | 48.32 | 57.31 | b | 67.59 | a | 79.90 | b | 89.67 | 96.60 | a | 94.37 | a | 85.57 | b | 77.04 | d | 52.07 | 37.33 | a | 68.05 | |||||
1992 | 27.23 | e | 48.14 | 64.81 | 78.97 | 83.66 | b | 90.79 | b | 93.93 | a | 95.34 | b | 87.57 | b | 76.86 | b | 51.11 | b | 37.17 | b | 69.63 | ||||
1993 | 41.67 | d | 48.88 | b | 65.55 | b | 70.07 | c | 82.66 | b | 90.42 | d | 96.35 | 92.73 | a | 86.67 | 68.52 | b | 51.03 | a | 43.81 | 69.86 | ||||
1994 | 47.52 | 49.21 | 67.83 | b | 72.69 | d | 83.74 | 97.73 | 101.07 | a | 97.93 | a | 88.23 | 69.03 | b | 50.71 | b | 44.26 | 72.50 | |||||||
1995 | 45.07 | b | 62.30 | a | 62.50 | c | 69.07 | b | 76.57 | h | 89.57 | i | 97.14 | b | 97.28 | b | 88.29 | b | 74.56 | d | 61.76 | a | 52.72 | f | 73.11 | c |
1996 | 47.20 | a | 57.48 | b | 64.04 | c | 74.21 | f | 89.30 | h | 98.11 | k | 101.60 | f | 98.50 | m | 86.44 | e | 69.93 | c | 57.04 | b | 45.52 | b | 61.09 | e |
1997 | 39.18 | c | 48.23 | f | 65.52 | f | 67.12 | d | 84.39 | h | 91.00 | d | 96.86 | i | 93.54 | g | 82.33 | c | 71.04 | c | 55.56 | c | 43.80 | a | 64.29 | e |
1998 | 49.15 | e | 50.48 | e | 56.07 | q | 68.56 | e | 80.93 | c | 87.24 | e | 98.97 | b | 96.29 | g | 88.07 | c | 69.07 | d | 56.38 | d | 43.41 | b | 69.23 | b |
1999 | 49.69 | b | 56.35 | b | 68.43 | a | 67.00 | e | 78.47 | a | 92.05 | i | 95.72 | f | 92.72 | m | 83.97 | a | 74.88 | f | 60.27 | 46.58 | g | 66.31 | e | |
2000 | 47.55 | b | 55.81 | c | 61.83 | b | 78.76 | m | 86.05 | k | 94.04 | b | 99.91 | i | 97.39 | m | 86.76 | e | 71.07 | b | 48.66 | a | 45.35 | h | 66.53 | e |
2001 | 43.72 | b | 50.13 | e | 63.20 | a | 72.93 | c | 82.68 | i | 97.57 | w | 98.95 | i | 95.68 | l | 91.58 | f | 74.87 | a | 59.57 | g | 36.46 | e | 56.88 | f |
2002 | 41.68 | 50.96 | 61.38 | e | 77.78 | c | 82.05 | j | ----- | z | 104.62 | o | 93.73 | p | 84.50 | l | 68.19 | e | 54.07 | b | 45.90 | 57.14 | e | |||
2003 | 50.57 | a | 50.09 | e | 63.25 | c | 69.65 | g | 83.50 | g | 93.64 | p | 105.32 | l | 96.27 | e | 86.96 | d | 78.19 | d | 54.46 | f | 45.96 | g | 70.89 | f |
2004 | 32.58 | e | 46.89 | b | 71.00 | d | 73.20 | e | 84.91 | h | 94.27 | o | ----- | z | 94.41 | n | 84.92 | f | 72.08 | e | 54.79 | b | 45.00 | j | 58.42 | f |
2005 | 50.23 | e | 53.12 | c | 63.74 | h | 71.83 | f | 82.67 | g | 91.00 | k | 103.77 | r | 93.38 | o | 84.04 | g | 71.72 | f | 54.96 | c | 40.87 | p | 52.77 | i |
2006 | 46.25 | k | 54.00 | e | 58.12 | e | 74.90 | i | 86.96 | f | 100.75 | v | 98.53 | n | 93.24 | j | 86.83 | r | 64.08 | s | 56.28 | l | 42.33 | s | 56.06 | j |
2007 | 47.00 | w | 53.60 | r | 66.62 | o | ----- | z | 84.83 | y | ----- | z | ----- | z | 96.23 | i | 92.08 | q | 70.75 | g | 59.89 | c | 37.36 | t | 59.89 | k |
2008 | 38.95 | j | 42.62 | u | 54.86 | x | ----- | z | 80.60 | p | 88.73 | o | 100.60 | u | 99.36 | q | 86.25 | r | 70.53 | n | 56.82 | s | 45.67 | p | ----- | z |
2009 | ----- | z | 53.00 | v | 69.50 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 38.78 | 49.31 | 59.88 | 69.68 | 79.62 | 90.58 | 96.64 | 93.77 | 85.43 | 71.52 | 54.49 | 41.51 | 69.06 | |||||||||||||
S.D. | 7.67 | 6.03 | 4.54 | 4.09 | 2.94 | 3.64 | 2.16 | 2.26 | 3.05 | 3.95 | 3.77 | 4.68 | 1.59 | |||||||||||||
SKEW | -0.40 | -0.59 | 0.35 | 0.32 | -0.20 | 0.13 | 0.10 | -0.34 | -1.29 | -0.14 | -0.13 | -0.44 | 0.70 | |||||||||||||
MAX | 51.62 | 62.30 | 71.00 | 78.97 | 85.42 | 98.04 | 101.07 | 98.68 | 89.83 | 78.60 | 61.76 | 50.85 | 72.50 | |||||||||||||
MIN | 20.39 | 33.44 | 50.94 | 62.12 | 73.10 | 83.63 | 92.94 | 87.19 | 75.73 | 61.48 | 46.97 | 29.18 | 66.90 | |||||||||||||
YRS | 54 | 53 | 51 | 50 | 43 | 45 | 45 | 46 | 45 | 49 | 50 | 49 | 26 |