1968 02 25.48  10.60  18.04 
1968 04 18.26   4.89  11.57 
1968 05  8.89   3.00   5.94 
1968 06  7.29    .-2   3.63 
1968 07  8.17  -1.90   3.13 
1968 08 99.99    .40 -99.99 
1968 09 12.64   -.14   6.25 
1968 10 16.87   2.57   9.72 
1968 11 99.99   5.95 -99.99 
1968 12 21.31   6.18  13.74 
1969 01 27.67  10.02  18.84 
1969 02 24.82  10.61  17.71 
1969 03 21.32   9.10  15.21 
1969 04 17.37   4.16  10.77 
1969 05 13.45   2.01   7.73 
1969 06 10.41   1.10   5.75 
1969 07 11.47   -.62   5.42 
1969 08 12.38   1.04   6.71 
1969 09 10.42    .65   5.53 
1969 10 17.42   4.37  10.89 
1969 11 18.58   5.82  12.20 
1969 12 22.02   5.76  13.89 
1970 01 22.03   9.55  15.79 
1970 02 23.69   9.52  16.60 
1970 03 19.59   6.37  12.98 
1970 04 16.87   4.57  10.72 
1970 06  9.67    .51   5.09 
1970 07  8.75  -1.66   3.54 
1970 08  8.64  -1.26   3.69 
1970 09 10.17   1.31   5.74 
1970 10 18.83   5.66  12.24 
1970 11 18.33   5.05  11.69 
1970 12 22.40   9.28  15.84 
1971 01 99.99   8.99 -99.99 
1971 03 22.94  10.18  16.56 
1971 04 21.01   3.96  12.48 
1971 06 12.87  -1.63   5.62 
1971 07  9.84  -4.75   2.54 
1971 08 99.99  -1.96 -99.99 
1971 09 12.79    .-2   6.38 
1971 10 99.99   1.13 -99.99 
1971 11 99.99   3.72 -99.99 
1971 12 99.99   9.85 -99.99 
1972 01 99.99  10.22 -99.99 
1972 02 21.06   9.43  15.25 
1972 03 19.79 -99.99 -99.99 
1972 04 16.29   3.00   9.64 
1972 05 12.53   3.08   7.80 
1972 06 11.37   4.62   7.99 
1972 07  8.68   3.51   6.09 
1972 08 10.75   5.84   8.29 
1972 10 17.66 -99.99 -99.99 
1972 11 19.12   6.14  12.63 
1972 12 24.28   8.67  16.47 
1973 01 25.83  10.91  18.36 
1973 02 20.28  12.81  16.54 
1973 03 20.52   8.43  14.47 
1973 04 17.16   5.59  11.37 
1973 05 13.08   2.06   7.57 
1973 06  8.72   1.72   5.22 
1973 07  9.57   1.93   5.75 
1973 08  9.16    .94   5.04 
1973 09 13.67   2.66   8.16 
1973 10 15.69   6.38  11.03 
1973 11 17.69   7.28  12.48 
1973 12 20.93  10.65  15.79 
1974 01 20.65  12.61  16.62 
1974 02 21.06  10.48  15.77 
1974 03 19.75   9.63  14.69 
1974 04 15.27   9.06  12.16 
1974 05 12.25   3.59   7.92 
1974 06  8.38    .35   4.36 
1974 07 99.99    .91 -99.99 
1974 08  7.30    .35   3.82 
1974 09 99.99   1.11 -99.99 
1974 10 13.66   4.51   9.08 
1974 11 99.99   4.98 -99.99 
1974 12 99.99   6.91 -99.99 
1975 01 99.99   8.89 -99.99 
1975 02 99.99  10.09 -99.99 
1975 03 99.99   7.89 -99.99 
1975 04 99.99   5.08 -99.99 
1975 05 99.99   3.83 -99.99 
1975 06 99.99   1.63 -99.99 
1975 07 99.99    .43 -99.99 
1975 08 99.99    .84 -99.99 
1975 09 13.30   4.01   8.65 
1975 10 14.61 -99.99 -99.99 
1975 11 20.02 -99.99 -99.99 
1975 12 22.75 -99.99 -99.99 
