1969 12 12.26  -1.36   5.45 
1970 01  9.34  -6.90   1.22 
1970 02 14.38  -1.99   6.19 
1970 03 16.03   1.29   8.66 
1970 04 25.15   9.13  17.14 
1970 05 29.44  12.25  20.84 
1970 06 32.11  17.11  24.61 
1970 07 35.57  17.48  26.52 
1970 08 36.59  17.84  27.21 
1970 09 31.24  16.29  23.77 
1970 10 22.58   5.45  14.01 
1970 11 16.82   -.58   8.11 
1970 12 16.01  -1.24   7.38 
1971 01 13.26  -5.04   4.11 
1971 02 14.30  -2.56   5.87 
1971 03 18.56   -.34   9.10 
1971 04 24.48   6.74  15.61 
1971 05 27.22  10.39  18.80 
1971 06 33.78  15.95  24.86 
1971 07 34.34  16.77  25.55 
1971 08 31.72 -99.99 -99.99 
1971 09 30.88 -99.99 -99.99 
1971 10 26.11  11.44  18.77 
1971 11 18.25   2.83  10.54 
1971 12 15.01   2.51   8.76 
1972 01 13.15  -1.98   5.58 
1972 02 16.15    .12   8.13 
1972 03 21.71   5.04  13.37 
1972 04 25.42  10.52  17.97 
1972 05 28.36  10.82  19.59 
1972 06 34.71  15.32  25.01 
1972 07 33.91  18.17  26.04 
1972 08 36.06  16.79  26.42 
1972 09 32.79  18.56  25.67 
1972 10 24.29  10.25  17.27 
1972 11 13.33   1.48   7.40 
1972 12 11.26  -2.47   4.39 
1973 01  9.58  -2.56   3.51 
1973 02 13.29  -2.75   5.27 
1973 03 20.45   6.14  13.29 
1973 04 21.30   7.79  14.54 
1973 05 27.36   9.79  18.57 
1973 06 30.97  15.74  23.35 
1973 07 33.66  18.27  25.96 
1973 08 33.64  15.55  24.59 
1973 09 30.05  15.50  22.77 
1973 10 25.98 -99.99 -99.99 
1973 11 20.29   5.70  13.00 
1973 12 14.68  -3.12   5.78 
1974 01 12.86  -2.95   4.95 
1974 02 18.09  -2.70   7.69 
1974 03 22.39   5.04  13.71 
1974 04 25.93   7.48  16.70 
1974 05 29.44 -99.99 -99.99 
1974 06 30.38 -99.99 -99.99 
1974 07 37.57 -99.99 -99.99 
1974 08 33.11  17.20  25.16 
1974 09 25.28  12.03  18.65 
1974 10 25.00   8.50  16.75 
1974 11 17.03   2.98  10.00 
1974 12 11.97  -1.69   5.14 
1975 01 15.00  -1.59   6.70 
1975 02 12.32  -1.39   5.46 
1975 03 16.42   2.08   9.25 
1975 04 24.21   7.89  16.04 
1975 05 28.41  12.93  20.67 
1975 06 31.08  16.25  23.66 
1975 07 33.81  16.45  25.13 
1975 08 34.24  16.99  25.61 
1975 09 28.47  11.14  19.80 
1975 10 26.40   7.55  16.97 
1975 11 18.89   3.54  11.21 
1975 12 12.74   -.88   5.93 
1976 01 12.67  -4.54   4.06 
1976 02 20.53   2.38  11.45 
1976 03 20.40   5.92  13.16 
1976 04 24.52   9.07  16.79 
1976 05 25.54   9.28  17.41 
1976 06 29.88  14.57  22.22 
1976 07 34.25  17.35  25.80 
1976 08 34.66  16.11  25.39 
1976 09 29.50  13.90  21.70 
1976 10 21.40   4.89  13.14 
1976 11 14.25  -1.07   6.59 
1976 12 99.99  -4.67 -99.99 
1977 01  6.37  -9.39  -1.51 
1977 02 16.43  -2.10   7.16 
1977 03 20.48 -99.99 -99.99 
1977 04 25.46   9.06  17.26 
1977 05 29.49  14.32  21.90 
1977 06 34.06  18.48  26.27 
1977 07 35.09  20.46  27.78 
1977 08 99.99  20.64 -99.99 
1977 09 31.76  18.75  25.25 
1977 10 24.93   7.67  16.29 
1977 11 17.59   5.88  11.73 
1977 12 13.77  -2.45   5.66 
1978 01  5.18  -7.02   -.92 
1978 02  6.31  -5.04    .63 
1978 03 16.96 -99.99 -99.99 
1978 04 25.54   8.82  17.18 
1978 05 27.35  12.85  20.10 
1978 06 32.07  17.70  24.88 
1978 07 38.18  21.36  29.77 
1978 08 36.45  20.54  28.49 
1978 09 31.90  18.45  25.17 
1978 10 26.94   5.65  16.29 
1978 11 19.67   5.18  12.42 
1978 12 13.21  -3.02   5.09 
1979 01  3.66  -7.32  -1.83 
1979 02 10.05  -3.26   3.39 
1979 03 19.70 -99.99 -99.99 
1979 04 24.14 -99.99 -99.99 
1979 05 26.74  12.93  19.83 
1979 06 30.71  17.61  24.16 
1979 07 33.84  19.83  26.84 
1979 08 33.15  18.58  25.86 
1979 09 29.33  12.79  21.06 
1979 10 27.17   9.13  18.15 
1979 11 16.15    .12   8.13 
1979 12 15.12  -1.36   6.88 
1980 01 11.86   -.75   5.55 
1980 02 12.70  -4.34   4.17 
1980 03 18.82   1.44  10.13 
1980 04 24.45   5.45  14.95 
1980 05 28.01  13.03  20.52 
1980 06 32.93  19.08  26.00 
1980 07 39.39 -99.99 -99.99 
1980 08 38.73  20.77  29.75 
1980 09 33.28  17.96  25.62 
1980 10 25.13   5.41  15.27 
1980 11 17.18    .67   8.92 
1980 12 14.52   -.88   6.82 
1981 01 12.39 -99.99 -99.99 
1981 02 15.81  -1.94   6.93 
1981 03 20.12 -99.99 -99.99 
1981 04 26.72  12.41  19.56 
1981 05 25.73  11.86  18.79 
1981 06 31.74  19.16  25.45 
1981 07 34.11  20.44  27.27 
1981 08 32.15  17.83  24.99 
1981 09 30.08  13.04  21.56 
1981 10 23.56   9.72  16.64 
1981 11 18.81   3.66  11.23 
1981 12 12.59  -2.32   5.13 
1982 01 11.88  -4.98   3.45 
1982 02 11.77  -2.11   4.82 
1982 03 20.98   5.75  13.36 
1982 04 22.14   6.61  14.37 
1982 05 28.11  13.38  20.74 
1982 06 29.87  16.33  23.10 
1982 07 33.68  19.31  26.50 
1982 08 35.15  19.75  27.45 
1982 09 29.86  13.31  21.58 
1982 10 25.59   7.26  16.42 
1982 11 17.70   5.01  11.36 
1982 12 13.51   1.84   7.67 
1983 01 10.79  -2.22   4.28 
1983 02 13.06    .19   6.62 
1983 03 18.01   2.34  10.18 
1983 04 20.08   5.88  12.98 
1983 05 26.56  10.95  18.75 
1983 06 30.22  15.17  22.69 
1983 07 33.91  18.98  26.44 
1983 08 36.52  19.69  28.10 
1983 09 32.40  14.63  23.51 
1983 10 25.78   8.54  17.16 
1983 11 17.99   4.19  11.09 
1983 12  4.71  -5.68   -.48 
1984 01  9.95  -6.48   1.73 
1984 02 16.95  -1.23   7.86 
1984 03 18.17   3.03  10.60 
1984 04 23.28   7.44  15.36 
1984 05 28.10  12.06  20.08 
1984 06 33.56  18.07  25.81 
1984 07 34.70  17.76  26.23 
1984 08 34.15  18.59  26.37 
1984 09 28.84  14.28  21.56 
1984 10 23.23  11.76  17.49 
1984 11 16.81   2.38   9.59 
1984 12 16.17   3.10   9.63 
1985 01  8.14  -6.23    .95 
1985 02 10.81  -3.19   3.81 
1985 03 21.14   6.79  13.96 
1985 04 25.26   9.29  17.27 
1985 05 28.10  12.63  20.36 
1985 11 20.81   4.23  12.52 
1985 12 11.40  -4.78   3.30 
1986 01 14.05  -4.13   4.96 
1986 02 15.09   1.05   8.07 
1986 03 20.09   4.05  12.07 
1986 04 23.32  11.17  17.24 
1986 05 26.32  13.42  19.86 
1986 06 31.01  18.35  24.68 
1986 07 35.73  22.49  29.11 
1986 08 32.91  17.98  25.45 
1986 09 29.17  18.93  24.05 
1986 12 11.21  -1.88   4.66 
1987 01 10.76  -3.10   3.83 
1987 02 14.36    .69   7.52 
1987 03 18.31   2.76  10.53 
1987 04 24.84   5.68  15.26 
