1973 06 20.43  11.15  15.79 
1973 07 24.57  15.13  19.85 
1973 08 22.34  12.77  17.55 
1973 09 17.78   6.58  12.18 
1973 10 12.91   2.76   7.83 
1973 11  5.49  -1.17   2.15 
1973 12  5.88  -4.21    .83 
1974 01 -2.33 -12.06  -7.20 
1974 02 -1.69 -13.02  -7.35 
1974 03  3.64  -7.58  -1.96 
1974 04  8.16   -.62   3.77 
1974 05 11.44   1.74   6.58 
1974 06 20.19   7.81  14.00 
1974 07 21.79  10.62  16.20 
1974 08 23.37  11.97  17.67 
1974 09 19.04   8.22  13.63 
1974 10 10.62    .57   5.59 
1974 11  7.59   -.60   3.49 
1974 12  2.33  -5.51  -1.58 
1975 01  -.21 -11.12  -5.66 
1975 02 -3.87 -14.84  -9.35 
1975 03  1.28  -7.31  -3.01 
1975 04  6.43  -1.65   2.38 
1975 05 15.33   3.02   9.17 
1975 06 21.04   7.56  14.30 
1975 07 25.74  13.82  19.77 
1975 08 23.04  12.39  17.71 
1975 10 12.52   2.25   7.38 
1975 11  9.62   -.43   4.59 
1975 12 99.99  -9.39 -99.99 
1976 01  -.96 -10.92  -5.94 
1976 02   .71  -8.84  -4.06 
1976 04  9.60    .21   4.90 
1976 05 15.15   4.32   9.73 
1976 06 21.26  10.35  15.80 
1976 07 23.27  14.09  18.68 
1976 08 23.43  12.76  18.09 
1976 09 99.99   8.52 -99.99 
1976 11  5.03  -1.76   1.63 
1976 12   .52 -10.33  -4.90 
1977 01 -2.52 -12.78  -7.64 
1977 02 -1.00  -9.03  -5.01 
1977 03  4.64  -3.09    .77 
1977 04  8.08  -1.84   3.12 
1977 06 18.53  10.09  14.31 
1977 07 23.71  11.85  17.77 
1977 08 99.99  12.48 -99.99 
1977 11 99.99   -.10 -99.99 
1978 01 -1.58 -10.66  -6.12 
1978 02 99.99 -14.43 -99.99 
1978 03  1.10  -8.47  -3.68 
1978 04  6.05  -1.92   2.06 
1978 07 22.76  11.33  17.04 
1978 08 23.77  12.14  17.95 
1978 09 16.34   5.33  10.83 
1978 10 11.81   2.08   6.95 
1978 11  5.48  -4.57    .45 
1978 12   .35  -8.37  -4.00 
1979 01  1.11  -7.43  -3.16 
1979 02 -3.71 -11.81  -7.76 
1979 03  6.47  -3.06   1.70 
1979 04  9.17   -.45   4.36 
1979 05 17.07   7.40  12.23 
1979 07 23.37  13.15  18.26 
1979 08 21.48  13.08  17.27 
1979 09 19.23   7.56  13.39 
1979 10 13.52   4.82   9.17 
1979 11  9.52   1.25   5.38 
1980 01 -1.77 -10.18  -5.97 
1980 03  1.63  -6.95  -2.66 
1980 04 10.07   1.27   5.67 
1980 05 14.79   3.23   9.01 
1980 06 99.99   7.62 -99.99 
1980 07 22.07  12.90  17.48 
1980 08 23.52  12.33  17.92 
1980 09 18.10   7.11  12.60 
1981 01 -3.26 -13.50  -8.38 
1981 02  3.12  -7.26  -2.07 
1981 03  4.67  -3.85    .41 
1981 04 10.34    . 2   5.18 
1981 05 16.52   6.26  11.39 
1981 06 20.63   9.04  14.83 
1981 07 22.81  12.24  17.52 
1981 08 22.13  10.66  16.39 
1981 09 18.59   8.72  13.65 
1981 11  7.37   -.43   3.47 
1981 12  3.75  -2.08    .83 
1982 01 -3.58 -13.55  -8.56 
1982 02 -2.28 -99.99 -99.99 
1982 06 18.89   8.43  13.66 
1982 07 24.90  12.62  18.76 
1982 08 20.69  11.05  15.87 
1982 09 18.70   8.85  13.77 
1982 11  8.83    .20   4.51 
1982 12  3.43  -6.22  -1.39 
1983 01   .12  -8.34  -4.11 
1983 04 10.62   1.16   5.89 
1983 05 15.69   5.96  10.82 
1983 06 20.58   9.07  14.82 
1983 09 21.07   9.79  15.43 
1983 10 13.33   4.07   8.70 
1983 11  8.56    .24   4.40 
1983 12  2.50  -7.28  -2.39 
1984 01 -1.50 -11.33  -6.41 
1984 02  2.91  -5.32  -1.20 
1984 04  9.07   -.46   4.30 
1984 05 15.78   5.69  10.73 
1984 06 20.37   9.41  14.89 
1984 07 25.26  14.27  19.76 
1984 08 25.59  15.38  20.48 
1984 09 18.37   7.95  13.16 
1984 11  7.98  -1.31   3.33 
1984 12  2.88  -5.26  -1.19 
1985 02 -1.50 -11.20  -6.35 
1985 03  1.88  -7.60  -2.86 
1985 04  7.59  -2.09   2.74 
1985 05 14.45   3.12   8.78 
1985 06 18.23   9.42  13.82 
1985 07 23.87  13.47  18.67 
1985 09 19.12   8.24  13.68 
1985 10 12.79   3.45   8.12 
1985 11  5.37  -1.22   2.07 
1985 12 -1.21 -11.33  -6.27 
1986 01   .18  -9.95  -4.88 
1986 02 -3.54 -12.18  -7.86 
1986 03  3.64  -8.81  -2.58 
1986 04 11.47   2.00   6.73 
1986 05 15.88   4.03   9.95 
1986 06 19.02   8.14  13.58 
1986 07 21.03  11.69  16.36 
1986 08 21.52  11.74  16.63 
1986 09 99.99   5.26 -99.99 
1986 11  5.92  -3.22   1.35 
1986 12  1.02  -9.17  -4.07 
1987 01 -2.44 -12.19  -7.31 
1987 02 -3.37 -13.67  -8.52 
1987 03   .83  -7.88  -3.52 
1987 04 11.10    .83   5.96 
1987 05 15.37   3.21   9.29 
1987 06 19.48   8.88  14.18 
1987 07 23.92  12.48  18.20 
1987 08 23.03  10.16  16.59 
1987 12  -.29  -6.89  -3.59 
1988 01 99.99 -12.80 -99.99 
1988 02  1.75 -99.99 -99.99 
1988 03  1.92  -5.74  -1.90 
1988 04  7.25    . 7   3.66 
1988 06 18.42   8.05  13.23 
1988 07 23.25  13.78  18.51 
1988 08 23.21  13.92  18.56 
1988 09 17.03   7.30  12.16 
1988 10 12.31   2.40   7.35 
1988 11  8.55    .45   4.50 
1988 12   .-3  -9.79  -4.91 
1989 01  -.63 -10.65  -5.64 
1989 02 -2.62 -12.77  -7.69 
1989 03  1.21 -10.88  -4.83 
1989 04  9.18   -.65   4.26 
1989 05 19.26   7.95  13.60 
1989 06 21.06  10.57  15.81 
1989 07 23.52  11.12  17.32 
1989 08 24.31  12.44  18.37 
1989 09 20.07   8.14  14.10 
1989 11  7.07  -1.23   2.92 
