1968 06 19.70   6.74  13.22 
1968 07 22.08  10.32  16.20 
1968 08 21.48   8.17  14.82 
1968 09 19.56   7.89  13.72 
1968 10 11.95   3.44   7.69 
1968 11  -.67  -8.41  -4.54 
1968 12 99.99 -17.29 -99.99 
1969 02 -4.38 -20.01 -12.19 
1969 03 99.99 -16.69 -99.99 
1969 04 99.99  -6.18 -99.99 
1969 05 99.99   1.55 -99.99 
1969 06 99.99   6.87 -99.99 
1969 07 24.16  10.25  17.20 
1969 08 24.63  12.04  18.33 
1969 09 15.15   4.67   9.91 
1969 10  6.60  -1.25   2.67 
1969 11   .67  -7.20  -3.26 
1969 12 -7.00 -16.92 -11.96 
1970 01 99.99 -25.15 -99.99 
1970 02 -9.91 -25.50 -17.70 
1970 03 99.99 -15.72 -99.99 
1970 04  7.81  -4.48   1.66 
1970 05 12.23   1.08   6.65 
1970 06 22.28   6.90  14.59 
1970 07 25.22  11.93  18.57 
1970 08 23.18  10.79  16.98 
1970 09 17.04   6.09  11.56 
1970 10 12.89   2.69   7.79 
1970 11   .93  -7.45  -3.26 
1970 12 -9.72 -21.02 -15.37 
1971 01 14.18 -24.57 -19.37 
1971 02 -6.30 -20.91 -13.60 
1971 03 -2.33 -16.74  -9.53 
1971 04  7.22  -4.37   1.42 
1971 05 14.20   -.55   6.82 
1971 06 23.65   7.94  15.79 
1971 07 22.20   9.14  15.67 
1971 08 21.62   8.68  15.15 
1971 09 19.00   7.15  13.07 
1971 10 14.34   4.09   9.21 
1971 11  -.37  -7.95  -4.16 
1971 12 -6.29 -16.25 -11.27 
1972 01 99.99 -25.95 -99.99 
1972 02 99.99 -24.37 -99.99 
1972 03 99.99 -18.91 -99.99 
1972 04 99.99  -7.44 -99.99 
1972 05 18.36   1.77  10.06 
1972 06 20.35   5.92  13.13 
1972 07 21.49  10.16  15.82 
1972 08 20.74   8.96  14.85 
1972 09 15.57   4.04   9.80 
1972 10  5.55  -2.51   1.52 
1972 11  -.97  -8.33  -4.65 
1972 12 10.58 -23.91 -17.24 
1973 01 -7.11 -22.39 -14.75 
1973 02 -9.01 -28.23 -18.61 
1973 03  4.05  -9.06  -2.50 
1973 04  7.86  -4.63   1.61 
1973 05 13.42   1.83   7.62 
1973 07 24.35  10.71  17.53 
1973 08 25.22  12.11  18.66 
1973 09 16.20   5.09  10.65 
1973 10 12.65   2.16   7.40 
1973 11 -1.16  -6.79  -3.98 
1973 12 -9.39 -18.78 -14.08 
1974 01 11.42 -25.86 -18.64 
1974 02 -9.62 -25.66 -17.64 
1974 04  6.80  -7.94   -.56 
1974 05 11.97   1.42   6.69 
1974 06 21.83   8.76  15.29 
1974 07 24.60  11.97  18.28 
1974 08 21.33   8.85  15.09 
1974 09 12.92   2.89   7.90 
1974 10  5.96  -1.87   2.04 
1974 11  1.89  -6.34  -2.22 
1974 12 -5.01 -15.62 -10.31 
1975 01 -7.78 -20.63 -14.20 
1975 02 -6.48 -19.91 -13.19 
1975 03 -2.95 -17.02  -9.98 
1975 04  5.23  -8.60  -1.68 
1975 05 21.25   5.83  13.54 
1975 06 23.50   9.93  16.71 
1975 07 26.33  12.59  19.45 
1975 08 23.79  10.09  16.94 
1975 09 15.03   4.08   9.55 
1975 10 10.74   -.33   5.20 
1975 11  2.50  -7.67  -2.58 
1975 12 -9.72 -21.90 -15.81 
1976 01 14.57 -99.99 -99.99 
1976 02 -5.83 -99.99 -99.99 
1976 03 -3.10 -99.99 -99.99 
1976 04  7.46  -4.41   1.52 
1976 05 14.41   1.22   7.81 
1976 06 25.91   9.87  17.89 
1976 07 24.66   8.09  16.37 
1976 08 24.81   9.05  16.93 
1976 09 14.96   2.02   8.49 
1976 10  6.70  -1.33   2.68 
1976 11 -2.87 -10.45  -6.66 
1976 12 13.03 -29.27 -21.15 
1977 01 12.49 -24.56 -18.52 
1977 02 -5.98 -18.50 -12.24 
1977 03  4.21 -11.76  -3.77 
1977 04 10.53  -9.29    .61 
1977 05 20.91 -99.99 -99.99 
1977 06 20.35   3.72  12.03 
1977 08 20.66   6.10  13.38 
1977 09 15.90   5.13  10.51 
1977 10 10.89    .66   5.77 
1977 11  3.83  -3.68    . 7 
1977 12 -8.45 -16.62 -12.53 
1978 01 11.02 -24.76 -17.89 
1978 02 -7.96 -23.66 -15.81 
1978 03 -2.24 -20.48 -11.36 
1978 04  4.59  -7.98  -1.69 
1978 06 18.87   5.63  12.25 
1978 07 23.58  10.40  16.99 
1978 08 22.84   9.64  16.24 
1978 09 15.30   3.24   9.27 
1978 10  9.24  -1.84   3.69 
1978 11   .77 -10.48  -4.85 
1978 12 -7.66 -21.97 -14.81 
1979 01 11.99 -24.92 -18.45 
1979 02 13.06 -28.07 -20.56 
1979 03   .14 -13.91  -6.88 
1979 04  6.78  -7.12   -.16 
1979 06 20.83   5.80  13.31 
1979 07 24.03   7.71  15.87 
1979 08 21.97   5.77  13.87 
1979 09 18.93   2.70  10.81 
