1967 01 -7.10 -21.72 -14.41 
1967 02 10.71 -30.90 -20.80 
1967 03 -4.39 -24.80 -14.59 
1967 04  3.26  -8.87  -2.80 
1967 05  9.07  -2.08   3.49 
1967 06 22.17   6.25  14.21 
1967 07 22.61  10.20  16.40 
1967 08 21.13   9.14  15.14 
1967 09 16.41   2.63   9.52 
1967 10  7.33  -1.24   3.04 
1967 11  -.72 -10.21  -5.46 
1967 12 -6.29 -19.40 -12.84 
1968 01 14.33 -35.06 -24.69 
1968 02 11.48 -99.99 -99.99 
1968 03 -1.42 -16.06  -8.74 
1968 04  7.95  -5.57   1.18 
1968 05 14.70    .-5   7.32 
1968 06 19.75   5.30  12.52 
1968 07 21.95   7.32  14.63 
1968 08 16.90   5.28  11.09 
1968 09 18.53   5.82  12.17 
1968 10  9.57    .36   4.96 
1968 11 -2.76  -9.58  -6.17 
1968 12 -7.79 -18.49 -13.14 
1969 01 -6.84 -19.43 -13.13 
1969 02 -5.49 -21.67 -13.58 
1969 03   . 3 -16.18  -8.07 
1969 04  4.23  -8.84  -2.30 
1969 05 11.69  -1.90   4.89 
1969 06 18.76   4.25  11.50 
1969 07 21.07   7.94  14.50 
1969 08 20.93   9.06  14.99 
1969 09 12.44   4.44   8.44 
1969 10  6.90  -1.01   2.94 
1969 11  1.99  -2.67   -.34 
1969 12 -5.72 -15.79 -10.75 
1970 01 13.76 -31.09 -22.42 
1970 02 10.56 -26.79 -18.67 
1970 03 -1.04 -13.72  -7.38 
1970 04  5.78  -7.93  -1.07 
1970 05 13.17  -1.07   6.05 
1970 06 19.56   5.64  12.60 
1970 07 23.87   9.37  16.62 
1970 08 21.53   9.76  15.64 
1970 09 13.35   3.03   8.19 
1970 10 10.93  -1.67   4.63 
1970 11   .78  -8.93  -4.07 
1970 12 13.02 -26.71 -19.86 
1971 01 12.92 -28.62 -20.77 
1971 02 -8.35 -26.33 -17.34 
1971 03 -1.96 -17.56  -9.76 
1971 04  5.45  -6.45   -.50 
1971 05 15.34    . 5   7.69 
1971 06 20.31   3.74  12.02 
1971 07 20.99   8.68  14.83 
1971 08 18.75   7.10  12.92 
1971 09 17.16   3.85  10.50 
1971 10  9.78   -.72   4.52 
1971 11 -1.86 -12.28  -7.07 
1971 12 11.14 -25.66 -18.40 
1972 01 -9.03 -30.17 -19.60 
1972 02 12.61 -29.79 -21.20 
1972 03 -5.81 -22.28 -14.04 
1972 04  4.92  -9.42  -2.25 
1972 05 13.99  -1.04   6.47 
1972 06 19.53   6.20  12.86 
1972 07 22.81   9.18  15.99 
1972 08 19.27   6.40  12.83 
1972 11 -1.39 -12.42  -6.90 
1972 12 11.74 -28.55 -20.14 
1973 06 22.20   7.81  15.00 
1973 07 23.34   8.21  15.77 
1973 08 21.67   9.39  15.53 
1973 10  8.99 -99.99 -99.99 
1974 01 13.05 -99.99 -99.99 
1974 03 99.99 -20.81 -99.99 
1974 04  6.20  -6.78   -.29 
1974 05  9.87  -4.36   2.75 
1974 06 20.99 -99.99 -99.99 
1974 07 22.26 -99.99 -99.99 
1974 10  3.73 -99.99 -99.99 
1974 11  1.12 -10.60  -4.74 
