1973 02 -5.05 -14.68  -9.86 
1973 03  5.42  -1.43   1.99 
1973 04 11.12   2.07   6.59 
1973 05 16.60   7.74  12.17 
1973 06 24.45  14.34  19.39 
1973 07 27.50  17.17  22.33 
1973 08 27.35  17.77  22.56 
1973 09 19.40  10.68  15.04 
1973 10 14.14   5.43   9.78 
1973 11  4.36  -1.17   1.59 
1973 12 -1.35  -8.34  -4.84 
1974 02 -5.70 -13.80  -9.75 
1974 03   .82  -7.48  -3.33 
1974 04 10.39   1.02   5.70 
1974 05 14.66   6.24  10.45 
1974 06 23.39  12.96  18.17 
1974 07 26.14  15.59  20.86 
1974 08 25.57  14.89  20.23 
1974 09 19.03   9.50  14.26 
1974 10 11.23   1.56   6.39 
1974 11  5.09  -1.46   1.81 
1974 12   . 2  -5.82  -2.90 
1975 01 -2.45 -11.07  -6.76 
1975 02 -3.03 -11.92  -7.47 
1975 03   .73  -7.48  -3.37 
1975 04  7.91  -1.02   3.44 
1975 05 22.60  10.31  16.45 
1975 06 24.82  14.20  19.51 
1975 07 28.76  17.14  22.95 
1975 08 27.22  15.90  21.56 
1975 09 19.21  10.05  14.63 
1975 10 13.88   5.45   9.66 
1975 11  7.86   1.14   4.50 
1975 12 -4.03 -12.62  -8.32 
1976 01 -8.47 -19.91 -14.19 
1976 02  -.65 -11.67  -6.16 
1976 03  2.54  -7.41  -2.43 
1976 04 12.51   1.42   6.96 
1976 05 17.34   6.39  11.86 
1976 06 25.55  14.00  19.77 
1976 07 24.94  14.85  19.89 
1976 08 24.62  14.06  19.34 
1976 09 18.58   9.57  14.07 
1976 10 10.49   2.21   6.35 
1976 11 99.99  -2.79 -99.99 
1976 12 99.99 -15.36 -99.99 
1977 01 -8.85 -16.42 -12.64 
1977 02 -3.22 -11.62  -7.42 
1977 03  5.22  -2.64   1.28 
1977 04 12.22    .78   6.50 
1977 05 21.76   8.35  15.05 
1977 06 99.99  12.18 -99.99 
1977 07 26.43  15.32  20.87 
1977 08 24.31  13.85  19.08 
1977 09 99.99  10.22 -99.99 
1977 10 99.99   3.57 -99.99 
1977 11  6.69    .-5   3.32 
1977 12 -3.16 -10.03  -6.59 
1978 01 -7.09 -14.79 -10.94 
1978 02 -7.03 -16.75 -11.89 
1978 03  -.24  -8.74  -4.48 
1978 04  8.14   -.86   3.64 
1978 05 21.69   9.14  15.42 
1978 06 23.45  12.34  17.89 
1978 07 26.58  15.68  21.13 
1978 08 25.32  15.17  20.24 
1978 09 18.56   8.09  13.32 
1978 10 12.31   4.30   8.30 
1978 11  5.77  -2.78   1.49 
1978 12 -1.80 -10.03  -5.91 
1979 01 -5.20 -11.98  -8.59 
1979 02 -9.71 -17.33 -13.52 
1979 03  5.16  -3.46    .84 
1979 04 11.33   2.15   6.74 
1979 05 18.69   8.96  13.82 
1979 06 24.03  12.35  18.19 
1979 07 27.22  16.24  21.73 
1979 08 23.61  14.54  19.07 
1979 09 19.98  10.22  15.10 
1979 10 12.43   5.57   9.00 
1979 11  7.77   1.10   4.43 
1979 12  -.22  -6.80  -3.51 
1980 01 -4.01 -10.87  -7.44 
1980 02 -4.89 -12.96  -8.92 
1980 03  1.74  -6.47  -2.36 
1980 04 11.71   3.22   7.46 
1980 05 18.94   7.62  13.28 
1980 06 22.31  11.77  17.04 
1980 07 25.81  15.64  20.72 
1980 08 26.11  16.15  21.13 
1980 09 19.64   9.57  14.60 
1980 10 10.50   2.82   6.66 
1980 11  3.08  -3.08    . 0 
1980 12 -6.25 -15.75 -11.00 
1981 01 -9.72 -20.03 -14.87 
1981 02  2.46  -5.77  -1.65 
1981 03  3.85  -3.82    . 1 
1981 04 13.18   2.53   7.85 
1981 05 18.90   8.10  13.50 
1981 06 23.75  13.29  18.52 
1981 07 26.58  15.63  21.10 
1981 08 24.18  14.18  19.18 
1981 09 18.45  10.53  14.49 
1981 10 10.45   2.69   6.57 
1981 11  4.96   -.80   2.08 
1981 12   .12  -6.50  -3.19 
1982 01 -9.81 -19.54 -14.68 
1982 02 -4.63 -14.33  -9.47 
1982 03  1.81  -7.98  -3.08 
1982 04  9.57  -1.13   4.21 
1982 05 20.56   9.00  14.78 
1982 06 22.07  11.73  16.90 
1982 07 27.53  14.50  21.01 
1982 08 22.88  11.92  17.40 
1982 09 19.90   9.95  14.92 
1982 10 13.81   3.87   8.84 
1982 11  7.57  -1.00   3.28 
1982 12  2.73  -7.67  -2.47 
1983 01 -3.08 -12.63  -7.85 
1983 02 -1.59 -11.55  -6.57 
1983 03  3.33  -5.87  -1.27 
1983 04  9.07   -.30   4.38 
1983 05 15.85   4.92  10.39 
1983 06 25.08  11.55  18.31 
1983 07 27.56  15.35  21.45 
1983 08 26.27  13.89  20.08 
1983 09 23.42  10.27  16.84 
1983 10 13.24   3.48   8.35 
1983 11  5.18  -2.38   1.39 
1983 12 -2.82 -13.15  -7.98 
1984 01 -7.13 -17.39 -12.26 
1984 02   .34  -9.77  -4.71 
1984 03 -1.73 -12.38  -7.05 
1984 04 11.74    .48   6.10 
1984 05 16.26   5.16  10.71 
1984 06 24.60  11.30  17.95 
1984 07 26.50  13.82  20.16 
1984 08 26.61  14.39  20.50 
1984 09 19.33   6.45  12.89 
1984 10 14.39   3.03   8.71 
1984 11  5.62  -3.36   1.13 
1984 12  1.23 -10.00  -4.38 
1985 01 -8.97 -19.24 -14.10 
