1967 12 13.12 -23.58 -18.35 
1968 01 13.36 -25.80 -19.58 
1968 02 10.76 -18.83 -14.79 
1968 03 -5.48 -21.07 -13.27 
1968 04   .38 -14.54  -7.08 
1968 05  6.16  -3.35   1.40 
1968 06 13.20   2.69   7.94 
1968 07 17.86   5.88  11.87 
1968 08 14.96   5.02   9.99 
1968 09  7.51  -1.13   3.19 
1968 10  -.75  -9.95  -5.35 
1968 11 -8.52 -19.94 -14.23 
1968 12 18.69 -29.88 -24.28 
1969 01 21.37 -30.48 -25.92 
1969 02 10.14 -22.31 -16.22 
1969 03 -3.51 -18.37 -10.94 
1969 04  2.90  -9.82  -3.45 
1969 05  8.93  -1.97   3.48 
1969 06 18.18   5.88  12.03 
1969 07 14.92   5.69  10.30 
1969 08 10.31   1.25   5.78 
1969 09 10.72   -.26   5.23 
1969 10  4.71  -3.84    .43 
1969 11 -9.67 -18.52 -14.09 
1969 12 -4.83 -15.86 -10.34 
1970 01 17.36 -30.87 -24.11 
1970 02 -3.35 -15.77  -9.56 
1970 03 -1.54 -14.65  -8.09 
1970 04  -.51 -12.24  -6.37 
1970 05  8.54  -3.58   2.48 
1970 06 11.43    .82   6.12 
1970 07 14.32   5.45   9.88 
1970 08 12.24   4.15   8.19 
1970 09 99.99  -1.92 -99.99 
1970 10 99.99 -12.53 -99.99 
1970 11 99.99 -20.76 -99.99 
1970 12 99.99 -29.81 -99.99 
1971 01 23.30 -34.28 -28.79 
1971 02 10.50 -22.00 -16.25 
1971 03 11.63 -27.04 -19.33 
1971 04 -1.58 -14.17  -7.87 
1971 05  4.86  -3.57    .64 
1971 06 14.17   1.56   7.86 
1971 08 13.18   5.29   9.23 
1971 09  7.61   -.26   3.67 
1971 10 -3.10 -10.72  -6.91 
1971 11 11.09 -22.10 -16.59 
1972 04 99.99 -21.37 -99.99 
1972 05  7.05  -5.26    .89 
1972 06 12.95   1.22   7.08 
1972 07 17.96   5.86  11.91 
1972 08 15.31   5.95  10.63 
1972 09  6.14  -1.77   2.18 
1972 10  -.96  -9.22  -5.09 
1972 11 -9.09 -20.11 -14.60 
1997 01 14.15 -25.08 -19.61 
1997 02 -3.74 -15.11  -9.42 
1997 03 10.54 -24.03 -17.28 
1997 04  3.16 -13.23  -5.03 
1997 05  8.92  -3.19   2.86 
1997 06 16.73   2.78   9.75 
1997 07 19.54   6.92  13.23 
1997 08 15.50   5.00  10.25 
1997 09 12.15    .25   6.20 
1997 10 -4.13 -14.85  -9.49 
1997 11 -3.91 -13.88  -8.89 
1997 12 -8.10 -19.95 -14.03 
1998 01 12.74 -25.10 -18.92 
