1966 07 99.99  12.14 -99.99 
1966 08 30.64  10.29  20.46 
1966 09 26.86   7.70  17.28 
1966 11  8.59  -2.92   2.83 
1966 12  -.62 -12.53  -6.57 
1967 01  1.11  -8.70  -3.79 
1967 02  2.86 -10.30  -3.72 
1967 03  5.35  -5.07    .13 
1967 04  9.84  -2.17   3.83 
1967 05 19.82   3.59  11.70 
1967 06 21.13   9.41  15.27 
1967 07 30.75  15.09  22.92 
1967 08 33.12  13.61  23.36 
1967 09 27.24   7.58  17.41 
1967 11  8.42  -3.50   2.46 
1967 12 -1.47 -13.98  -7.72 
1968 01 99.99 -14.49 -99.99 
1968 02  4.17  -8.92  -2.37 
1968 03 11.04  -2.45   4.29 
1968 04 12.58  -2.04   5.27 
1968 05 18.59   3.85  11.22 
1968 06 23.95   8.76  16.35 
1968 07 32.41  11.88  22.14 
1968 08 24.95   9.29  17.12 
1968 09 23.08   5.45  14.26 
1968 11  5.10  -3.55    .77 
1968 12   .42  -9.57  -4.57 
1969 01   .41 -10.12  -4.85 
1969 02  1.07 -13.03  -5.98 
1969 03  1.98 -13.53  -5.77 
1969 04 14.06    .37   7.21 
1969 05 22.09   6.85  14.47 
1969 06 22.28   9.01  15.64 
1969 07 29.16  12.56  20.86 
1969 08 31.97  11.24  21.60 
1969 09 25.47   6.41  15.94 
1969 10 13.02  -3.36   4.83 
1969 11  9.16  -6.47   1.34 
1969 12  2.05  -9.09  -3.52 
1970 01   . 5  -9.60  -4.77 
1970 02  3.02  -9.32  -3.15 
1970 03  5.33  -5.85   -.26 
1970 04  9.16  -2.29   3.43 
1970 05 18.03   4.46  11.25 
1970 06 24.41   9.74  17.07 
1970 07 29.66  13.36  21.51 
1970 08 31.90  12.18  22.04 
1970 09 20.98   2.32  11.65 
1970 11  6.43  -2.54   1.94 
1970 12 -1.35 -12.04  -6.69 
1971 01 -1.58 -11.11  -6.34 
1971 02  1.29 -10.68  -4.69 
1971 03 99.99  -9.17 -99.99 
1971 04 11.90   -.35   5.77 
1971 05 18.98   5.92  12.45 
1971 06 21.23   8.62  14.92 
1971 07 29.39  13.61  21.50 
1971 08 31.79  14.34  23.06 
1971 09 20.96   2.97  11.96 
1971 11  5.12  -4.67    .22 
1971 12 -1.86 -13.37  -7.61 
1972 01 -2.17 -12.13  -7.15 
1972 02   .85 -11.18  -5.16 
1972 03  8.83  -3.67   2.58 
1972 04 12.18   -.60   5.79 
1972 05 20.25   5.65  12.95 
1972 06 25.11  10.46  17.78 
1972 07 29.11  11.58  20.34 
1972 08 30.41  11.59  21.00 
1972 09 20.70   4.04  12.37 
1972 10 15.50   1.54   8.52 
1972 11  5.46  -3.09   1.18 
1972 12 -2.23 -13.28  -7.75 
1973 02  2.08 -13.59  -5.75 
1973 03  5.25  -6.83   -.79 
1973 04 11.74   -.66   5.54 
1973 05 20.17   4.83  12.50 
1973 06 24.88   7.97  16.42 
1973 07 31.33  11.92  21.62 
1973 08 30.05  10.14  20.09 
1973 09 23.32   5.00  14.16 
1973 12  1.50  -7.53  -3.01 
1974 01 -3.02 -14.68  -8.85 
1974 02 -1.04 -16.94  -8.99 
1975 09 26.18   5.14  15.66 
