1969 02 99.99 -26.37 -99.99 
1969 03 13.00 -20.74 -16.86 
1969 04 -5.22 -14.34  -9.78 
1969 05  5.42  -2.46   1.48 
1969 06 10.51   2.10   6.31 
1969 07 17.20   7.98  12.59 
1969 08 18.53   7.69  13.11 
1969 09 10.24   3.39   6.81 
1969 10 -1.88 -11.84  -6.86 
1969 11 99.99 -19.17 -99.99 
1969 12 99.99 -26.09 -99.99 
1970 01 99.99 -21.31 -99.99 
1970 02 17.36 -24.49 -20.92 
1970 03 10.81 -21.08 -15.94 
1970 04 -4.09 -12.80  -8.44 
1970 05  6.34  -1.63   2.35 
1970 06 13.87   3.92   8.89 
1970 07 17.58   6.93  12.25 
1970 08 14.93   4.67   9.80 
1970 09 12.92   4.27   8.59 
1970 10 -1.44  -9.14  -5.29 
1970 11 99.99 -21.75 -99.99 
1970 12 99.99 -22.01 -99.99 
1971 01 99.99 -20.70 -99.99 
1971 02 18.02 -25.52 -21.77 
1971 03 14.50 -23.07 -18.78 
1971 04 -4.09 -12.68  -8.38 
1971 05  3.43  -3.65   -.11 
1971 06 12.48   2.48   7.47 
1973 03 15.61 -99.99 -99.99 
1973 04 -3.39 -99.99 -99.99 
1973 05  4.92 -99.99 -99.99 
1973 06 12.97   2.50   7.73 
1973 07 16.70   6.39  11.54 
1973 08 15.97   6.45  11.21 
1973 09  9.46   1.10   5.28 
1973 10 99.99  -8.50 -99.99 
1973 11 99.99 -18.07 -99.99 
1973 12 99.99 -19.85 -99.99 
1974 01 99.99 -21.87 -99.99 
1974 02 16.26 -99.99 -99.99 
1974 03 -9.85 -16.93 -13.39 
1974 05  5.62  -2.71   1.45 
1974 08 16.61 -99.99 -99.99 
1974 09 10.60   3.50   7.05 
1974 10  2.90  -3.07    .-8 
1974 12 99.99 -24.19 -99.99 
1975 01 99.99 -29.43 -99.99 
1975 02 99.99 -20.92 -99.99 
1975 03 13.66 -25.59 -19.62 
1975 04 -3.21 -14.00  -8.60 
1975 05  4.92  -4.04    .44 
1975 06 11.96   3.48   7.72 
1975 07 17.64   8.17  12.90 
1975 08 17.29   8.35  12.82 
1975 09 10.31 -99.99 -99.99 
1976 01 99.99 -20.32 -99.99 
1976 02 17.43 -25.08 -21.25 
1976 03 14.67 -23.93 -19.29 
1976 04 -6.25 -16.86 -11.55 
1976 05  4.38  -2.57    .90 
1976 06 12.96   3.24   8.10 
1976 07 17.86   6.75  12.30 
