1967 02 99.99  21.74 -99.99 
1967 03 27.49 -99.99 -99.99 
1967 04 25.78 -99.99 -99.99 
1967 05 22.92  13.50  18.20 
1967 07 20.20  10.68  15.44 
1967 08 21.29  10.53  15.91 
1967 09 23.81  11.98  17.89 
1967 10 26.23  19.40  22.81 
1967 11 28.02  20.65  24.33 
1967 12 28.43  20.84  24.63 
1968 01 28.83  23.01  25.92 
1968 02 27.96  21.89  24.92 
1968 03 27.54  21.46  24.50 
1968 04 27.36  19.04  23.20 
1968 05 23.53  14.07  18.79 
1968 06 21.77   9.97  15.87 
1968 07 19.83  10.41  15.12 
1968 08 22.63  10.14  16.39 
1968 09 23.33  15.46  19.39 
1968 10 26.63  17.85  22.24 
1968 11 29.17  20.41  24.79 
1968 12 29.18  22.45  25.81 
1969 01 30.32  23.68  27.00 
1969 02 29.72  22.80  26.25 
1969 03 27.05  22.17  24.61 
1969 04 25.97  18.56  22.26 
1969 05 23.36  16.49  19.92 
1969 06 21.20  12.19  16.69 
1969 07 20.98  13.63  17.30 
1969 08 22.13  14.69  18.41 
1969 09 24.25  12.36  18.30 
1969 10 24.83  19.33  22.08 
1969 11 28.64  20.25  24.44 
1969 12 99.99  22.85 -99.99 
1970 02 29.06  22.68  25.87 
1970 03 28.74  21.85  25.29 
1970 04 26.20  19.58  22.89 
1970 05 22.90  14.29  18.59 
1970 06 22.23  11.59  16.91 
1970 07 21.01   9.56  15.28 
1970 08 22.78  10.96  16.87 
1970 09 24.59  14.46  19.52 
1970 10 25.77  19.54  22.66 
1970 11 27.55  21.15  24.34 
1970 12 28.95  22.79  25.87 
1971 01 30.21  23.18  26.69 
1971 02 28.59  23.03  25.81 
1971 03 27.09  21.43  24.26 
1971 04 25.28  18.62  21.95 
1971 05 24.18  12.60  18.39 
1971 06 21.29   9.72  15.50 
1971 07 20.39  10.14  15.26 
1971 08 22.94  14.56  18.75 
1971 09 24.72  15.32  20.02 
1971 10 29.66  19.62  24.64 
1971 11 29.84  19.98  24.91 
1971 12 29.20  21.96  25.58 
1972 01 29.46  22.45  25.95 
1972 02 28.52  22.24  25.38 
1972 03 27.56  20.40  23.98 
1972 04 25.69  17.45  21.57 
1972 05 22.84  16.04  19.44 
1972 06 21.30  12.09  16.69 
1972 07 21.05   7.95  14.50 
1972 08 23.11  10.66  16.88 
1972 09 23.27  15.74  19.50 
1972 10 26.93  17.87  22.40 
1972 11 28.05  20.83  24.43 
1972 12 28.85  20.52  24.68 
1973 01 29.44  23.78  26.61 
1973 02 29.50  24.09  26.79 
1973 03 28.82  23.03  25.92 
1973 04 26.42  20.20  23.31 
1973 05 25.30  17.78  21.54 
1973 06 22.57  13.72  18.14 
1973 07 21.73  13.85  17.79 
1973 08 22.52  14.05  18.28 
1973 09 24.10  16.86  20.48 
1973 10 26.15  19.98  23.06 
1973 11 28.37  22.09  25.23 
1973 12 28.22  23.12  25.67 
1974 01 28.05  22.62  25.33 
1974 02 29.00 -99.99 -99.99 
1974 03 27.93 -99.99 -99.99 
1974 04 26.45  19.46  22.96 
1974 05 23.90  15.67  19.78 
1974 06 21.75  11.92  16.83 
1974 07 21.19   7.55  14.37 
1974 08 22.62  11.27  16.94 
1974 09 23.03  14.39  18.71 
1974 10 25.16  17.35  21.25 
1974 11 27.43  18.53  22.98 
1974 12 28.70  21.57  25.13 
1975 01 28.39  23.27  25.83 
1975 02 28.41  23.16  25.78 
1975 03 28.26  22.66  25.46 
1975 04 99.99  19.83 -99.99 
1975 05 99.99  15.58 -99.99 
1975 06 21.55  12.76  17.15 
1975 07 21.73  13.05  17.39 
1975 08 22.47  12.76  17.61 
1975 09 23.08  16.94  20.01 
1975 10 25.45  18.87  22.16 
1975 11 27.35  20.52  23.93 
1975 12 27.91  22.33  25.12 
1976 01 28.58  22.86  25.72 
1976 02 28.70 -99.99 -99.99 
1976 04 25.66  18.90  22.28 
1976 05 23.73  16.62  20.18 
1976 06 21.88  11.76  16.82 
1976 07 20.96  11.21  16.08 
1976 08 21.50   8.99  15.24 
1976 09 23.89  13.29  18.59 
1977 01 28.88  22.13  25.50 
1977 02 28.86  22.91  25.88 
1977 03 28.19  22.07  25.13 
1977 04 26.42  20.88  23.65 
1977 05 24.05  16.26  20.15 
1977 06 21.09  10.76  15.92 
1977 07 20.52   9.43  14.98 
1977 08 21.85  11.90  16.87 
1977 09 23.49  14.63  19.06 
1977 10 25.57  18.33  21.95 
1978 10 24.48  16.04  20.26 
1978 11 26.54 -99.99 -99.99 
1978 12 29.03  21.05  25.04 
1979 01 28.68  21.84  25.26 
1979 03 27.64  21.65  24.64 
1979 04 26.75  19.14  22.94 
1979 05 23.19  14.52  18.85 
1979 06 22.15  14.09  18.11 
1979 07 21.07  11.09  16.08 
1979 08 22.09  11.38  16.73 
1979 09 23.61  16.84  20.22 
1979 11 28.02  21.74  24.88 
1979 12 30.30  22.89  26.59 
1980 01 31.03  23.92  27.47 
1980 02 29.15  23.27  26.21 
1980 03 27.86  20.91  24.38 
1980 04 26.45  18.45  22.45 
1980 06 22.84  12.15  17.49 
1980 07 21.42  10.35  15.88 
1981 01 27.74  22.16  24.95 
1981 02 29.91  24.17  27.04 
1981 04 26.99  19.50  23.24 
1981 05 24.30 -99.99 -99.99 
1981 06 22.50 -99.99 -99.99 
1981 07 21.20 -99.99 -99.99 
1981 08 23.20 -99.99 -99.99 
1981 09 23.90 -99.99 -99.99 
1981 10 25.50 -99.99 -99.99 
1981 11 27.20 -99.99 -99.99 
1981 12 31.00 -99.99 -99.99 
1982 01 30.90 -99.99 -99.99 
1982 02 29.80 -99.99 -99.99 
1982 03 29.10 -99.99 -99.99 
1982 04 26.30 -99.99 -99.99 
1982 05 24.30 -99.99 -99.99 
1982 06 20.70 -99.99 -99.99 
1982 07 20.90 -99.99 -99.99 
1982 08 21.00 -99.99 -99.99 
1982 09 23.90 -99.99 -99.99 
1982 10 25.50 -99.99 -99.99 
1982 11 26.50 -99.99 -99.99 
1982 12 29.30 -99.99 -99.99 
1983 01 29.20 -99.99 -99.99 
1983 02 28.80 -99.99 -99.99 
1983 03 28.40 -99.99 -99.99 
1983 04 26.50 -99.99 -99.99 
1983 05 24.20 -99.99 -99.99 
1983 06 22.00 -99.99 -99.99 
1983 07 21.00 -99.99 -99.99 
1983 08 21.80 -99.99 -99.99 
1983 09 25.40 -99.99 -99.99 
1983 10 27.50 -99.99 -99.99 
1983 11 28.40 -99.99 -99.99 
1983 12 28.20 -99.99 -99.99 
1984 01 29.30 -99.99 -99.99 
1984 02 28.40 -99.99 -99.99 
1984 03 28.10 -99.99 -99.99 
1984 04 25.90 -99.99 -99.99 
1984 05 23.50 -99.99 -99.99 
1984 06 22.30 -99.99 -99.99 
1984 07 20.70 -99.99 -99.99 
1984 08 22.70 -99.99 -99.99 
1984 09 25.00 -99.99 -99.99 
1984 10 24.80 -99.99 -99.99 
1984 11 27.20 -99.99 -99.99 
1985 01 30.80 -99.99 -99.99 
1985 02 28.60 -99.99 -99.99 
1985 03 27.70 -99.99 -99.99 
1985 04 26.20 -99.99 -99.99 
1985 05 24.00 -99.99 -99.99 
1985 06 21.50 -99.99 -99.99 
1985 07 21.20 -99.99 -99.99 
1985 08 21.90 -99.99 -99.99 
1985 09 25.00 -99.99 -99.99 
1985 10 26.00 -99.99 -99.99 
1986 01 29.90 -99.99 -99.99 
1986 02 29.10  23.17  26.13 
1986 03 28.20 -99.99 -99.99 
1986 05 24.70 -99.99 -99.99 
1986 06 22.30 -99.99 -99.99 
1986 07 21.60 -99.99 -99.99 
1986 08 22.10 -99.99 -99.99 
1986 09 24.50 -99.99 -99.99 
