1971 01 10.00 -19.57 -14.78 
1971 02 -6.09 -15.68 -10.88 
1971 03  -.66 -10.25  -5.45 
1971 04  4.38  -5.01   -.31 
1971 05 14.70 -99.99 -99.99 
1971 06 19.45 -99.99 -99.99 
1971 07 21.20  12.46  16.83 
1971 08 20.26  10.41  15.33 
1971 09 16.96   7.95  12.45 
1971 10 11.74   2.77   7.25 
1971 11  1.12  -6.09  -2.48 
1971 12 -6.29 -15.37 -10.83 
1972 01 -6.90 -18.14 -12.52 
1972 02 -9.12 -19.33 -14.22 
1973 08 21.39  13.09  17.24 
1974 02 -7.89 -17.31 -12.60 
1974 03 -1.98 -12.21  -7.09 
1974 04  3.49  -3.40    . 4 
1974 05  9.35    .95   5.15 
1974 06 20.48  10.50  15.49 
1974 07 21.80  12.81  17.30 
1974 08 20.80  11.49  16.14 
1974 09 14.17   5.06   9.61 
1974 10  6.83  -1.40   2.71 
1974 11  1.83  -4.52  -1.34 
1974 12 -2.85 -11.12  -6.98 
1975 01 -7.88 -17.14 -12.51 
1975 02 -7.01 -16.23 -11.62 
1975 03 -1.76 -10.43  -6.09 
1975 04  3.76  -3.78    . 0 
1975 05 16.08   5.05  10.56 
1975 06 20.93  11.69  16.31 
1975 07 23.95  14.50  19.22 
1975 08 22.24  11.61  16.92 
1975 09 15.24   7.29  11.26 
1975 10  9.62   1.33   5.47 
1975 11  3.91  -3.46    .22 
1975 12 -6.39 -16.77 -11.58 
1976 02 -4.73 -15.69 -10.21 
1976 03 -1.12 -11.34  -6.23 
1976 04  6.27  -2.19   2.04 
1976 05 13.59   3.99   8.79 
1976 06 21.75  10.63  16.19 
1976 07 20.72  12.09  16.40 
1976 08 20.64  11.97  16.30 
1976 09 14.32   5.60   9.96 
1976 10  7.00    .18   3.59 
1976 11  -.82  -7.10  -3.96 
1976 12 -7.84 -18.96 -13.40 
1977 01 -9.75 -18.94 -14.34 
1977 02 -6.15 -14.03 -10.09 
1977 03  2.85  -5.60  -1.37 
1977 04  6.23  -3.35   1.44 
1977 05 17.20   5.43  11.31 
1977 06 17.40   9.38  13.39 
1977 07 21.65  12.19  16.92 
1977 08 19.84  10.65  15.24 
1977 09 14.51   5.70  10.10 
1977 10  8.99   1.65   5.32 
1977 11  4.25  -2.98    .63 
1977 12 -4.77 -12.93  -8.85 
1978 01 -8.24 -17.35 -12.79 
1978 02 -6.71 -15.73 -11.21 
1978 03 -2.62 -12.28  -7.45 
1978 04  5.02  -2.97   1.02 
1978 05 16.90   5.79  11.34 
1978 06 19.96   9.95  14.95 
1978 07 22.51  12.62  17.56 
1978 08 21.55  11.33  16.43 
1978 09 13.95   4.56   9.25 
1978 10  7.98    .51   4.24 
1978 11  1.43  -7.76  -3.16 
1978 12 -5.19 -14.10  -9.64 
1979 01 -6.87 -15.06 -10.96 
1979 02 -9.66 -17.59 -13.62 
1979 03  2.60  -5.28  -1.34 
1979 04  7.26   -.17   3.54 
1979 05 15.19   6.05  10.62 
1979 06 20.95  10.48  15.71 
1979 07 23.61  14.08  18.84 
1979 08 19.70  11.43  15.57 
1979 09 15.52   6.16  10.84 
1979 10  9.71   2.48   6.09 
