Mar Apr May Jun Jul Aug Ann Spring Summer
37.56 62.12 66.02 75.02 76.06 77.55 57.91 1960 51.79 76.285
52.71 53.57 64.18 72.73 77.58 76.52 58.71 1961 58.445 74.625
45.47 57.4 72.02 73.43 75.66 75.81 58.18 1962 58.745 74.62
53.39 60.48 65.35 72.65 76 76.26 57.51 1963 59.37 74.455
50.53 59.57 68.05 75.58 76.39 74.84 58.83 1964 59.29 75.21
44.6 58.23 71.89 71.83 76.23 77.18 59.11 1965 58.245 74.505
49.68 56.98 66.48 73.37 79.05 77.66 58.63 1966 58.08 75.515
53.68 62.48 63.87 71.98 76.85 76.32 59.06 1967 58.775 74.15
52.61 58.05 63.89 73.53 76.89 79.16 58.41 1968 58.25 76.345
43.32 58.73 66.15 74.62 78.02 73.81 56.89 1969 54.735 74.215
46.18 59.4 65.97 72.63 76.06 75.32 57.79 1970 56.075 73.975
45.05 56.37 64.4 75.37 76.53 75.29 58.97 1971 54.725 75.33
49.45 58.02 64.26 69.93 77.11 75.53 58.42 1972 56.855 72.73
54.74 57.92 64.53 75.1 76.42 76.56 59.75 1973 59.635 75.83
54.4 60.2 67.39 71.78 76.5 75.98 59.64 1974 60.895 73.88
47.02 55.75 68.21 73.65 75.58 78.29 59.57 1975 57.615 75.97
56.15 60.67 66.79 74.63 78.61 75.37 58.74 1976 61.47 75
53.34 62.57 68.4 73.28 80.56 78.1 58.58 1977 60.87 75.69
48.19 59.22 65.97 75.78 77.95 79.84 59.03 1978 57.08 77.81
52.11 59.68 66.74 69.78 75.4 77.15 58.57 1979 59.425 73.465
46.5 61.95 69.77 74.95 78.92 79.6 59.33 1980 58.135 77.275
46.16 61.65 63.97 78.85 80.81 74.6 58.26 1981 55.065 76.725
51.61 57.37 70.97 74.68 79.06 76.48 60.13 1982 61.29 75.58
50.69 55.03 65.42 72.45 79.03 79.1 58.48 1983 58.055 75.775
47.16 55.88 65.45 75.43 74.9 76.53 58.99 1984 56.305 75.98
52.66 62.02 67.32 73.85 76.81 75.16 59.56 1985 59.99 74.505
51.61 61.13 67.35 78.38 81.68 75.63 60.8 1986 59.48 77.005
49.11 56.9 69.29 76.25 81.15 79.13 59.61 1987 59.2 77.69
50.58 57.73 66 72.33 78.92 80.34 58.44 1988 58.29 76.335
50.65 58 65.02 76.92 78.02 76.13 59.28 1989 57.835 76.525
54.85 60.28 67.39 75.18 79.95 77.97 62.75 1990 61.12 76.575
54.26 62.28 72.26 75.82 80.58 77.77 61.78 1991 63.26 76.795
50.45 59.18 63.23 71.95 80.39 74.05 59.39 1992 56.84 73
47.85 56.9 69.02 76.05 82.47 78.18 59.99 1993 58.435 77.115
52.18 63.62 64.19 76.97 79.61 75.98 60.33 1994 58.185 76.475
52.65 61 68.48 73.77 80.4 80.6 60.1 1995 60.565 77.185
45.31 58.33 67.68 76.43 78.55 75.18 58.76 1996 56.495 75.805
54.61 55.13 63.9 71.52 79.4 76.58 58.98 1997 59.255 74.05
50.15 58.82 69.21 77.32 79.52 77.5 61.46 1998 59.68 77.41
47.52 61.45 66.75 74.43 81.29 79.98 60.67 1999 57.135 77.205
53.34 57.6 69.94 77.13 76.94 76.08 59.01 2000 61.64 76.605
49.03 60.8 68.03 76.9 76.18 79.6 60.92 2001 58.53 78.25
52.56 63.23 67.02 77.92 80.53 78.31 60.92 2002 59.79 78.115
53.24 58.22 66.29 73.65 78.27 78.85 59.44 2003 59.765 76.25
              correlation 0.107155