1971 08 26.62  13.45  20.03 
1971 09 24.69  15.32  20.00 
1971 10 22.09  10.40  16.24 
1971 11 10.55   1.30   5.92 
1971 12  8.76   -.81   3.97 
1972 03  7.47 -99.99 -99.99 
1972 04 13.93   3.22   8.57 
1972 05 22.06  10.26  16.16 
1972 06 24.05  13.51  18.77 
1972 11  7.87   1.26   4.56 
1972 12  5.21  -3.86    .67 
1973 01  4.44  -5.48   -.52 
1973 02  2.54  -6.22  -1.83 
1973 03 13.72   3.53   8.62 
1973 04 15.26   5.76  10.51 
1973 05 18.93  10.18  14.56 
1973 06 28.53  18.03  23.28 
1973 07 28.63  19.48  24.05 
1973 08 28.40  19.20  23.80 
1973 09 25.98  14.98  20.48 
1973 10 20.48  10.96  15.71 
1973 11 12.11   3.79   7.95 
1973 12  4.98  -1.57   1.70 
1974 01  4.83  -3.75    .53 
1974 02  2.26  -5.29  -1.51 
1974 03  9.50    . 7   4.78 
1974 04 17.65   6.51  12.08 
1974 05 20.40   9.46  14.93 
1974 06 25.58  13.50  19.54 
1974 07 29.39 -99.99 -99.99 
1974 08 28.25 -99.99 -99.99 
1974 09 22.51  10.97  16.74 
1974 10 17.95   6.95  12.45 
1974 11 11.40   3.00   7.20 
1974 12  3.93  -3.00    .46 
1975 01  4.83  -3.51    .66 
1975 02  4.14  -4.48   -.17 
1975 03 99.99  -2.45 -99.99 
1975 04 99.99   2.03 -99.99 
1975 05 23.99  12.50  18.24 
1975 06 26.89  17.18  22.03 
1975 07 29.67 -99.99 -99.99 
1975 08 28.59  18.33  23.46 
1975 09 21.49  12.52  17.00 
1975 10 19.59 -99.99 -99.99 
1975 11 15.14 -99.99 -99.99 
1975 12  5.90  -3.07   1.41 
1976 01   .49  -8.95  -4.23 
1976 03 99.99    .43 -99.99 
1976 05 20.72   8.02  14.37 
1976 06 27.04  15.99  21.51 
1976 09 23.16 -99.99 -99.99 
1976 10 15.42   6.30  10.86 
1976 11  7.32  -2.30   2.51 
1976 12  1.25  -9.30  -4.02 
1977 01 -5.73 -99.99 -99.99 
1977 02  2.02  -6.51  -2.24 
1977 03 13.70   1.44   7.57 
1977 04 19.08   4.71  11.90 
1977 05 25.39  11.49  18.43 
1977 06 25.04  13.71  19.37 
1977 07 27.75  18.62  23.18 
1977 09 24.43  15.29  19.86 
1977 10 16.04   7.77  11.90 
1977 11 11.78   3.76   7.77 
1977 12  3.31  -5.48  -1.08 
1978 01 -2.27 -10.46  -6.36 
1978 02 -3.46 -13.18  -8.32 
1978 03  5.12  -5.02    . 4 
1978 04 15.34   3.12   9.22 
1978 05 20.45  10.72  15.58 
