1966 10 35.64  20.62  28.13 
1966 11 36.83  21.92  29.37 
1966 12 34.86  22.74  28.80 
1967 01 33.49  23.04  28.26 
1967 02 30.26  23.40  26.83 
1967 03 32.34  22.65  27.49 
1967 04 33.91  19.03  26.47 
1967 05 32.66 -99.99 -99.99 
1967 06 28.58 -99.99 -99.99 
1967 08 33.13  13.50  23.31 
1967 09 35.23  15.86  25.54 
1967 10 38.18  20.99  29.58 
1967 11 37.72  22.36  30.04 
1967 12 35.88  23.32  29.60 
1968 01 32.45  23.17  27.81 
1968 02 30.29  23.25  26.77 
1968 03 33.66  23.68  28.67 
1968 04 35.03  21.23  28.13 
1968 05 30.86  20.46  25.66 
1968 06 30.84  15.62  23.23 
1968 07 28.68  15.55  22.11 
1968 08 32.58  14.95  23.76 
1968 09 35.65  18.78  27.21 
1968 10 37.28  21.76  29.52 
1968 11 36.45  23.11  29.78 
1968 12 35.24  22.84  29.04 
1969 01 33.47  23.46  28.46 
1969 02 31.29  23.62  27.45 
1969 03 33.25  23.63  28.44 
1969 04 33.57  15.83  24.70 
1969 05 32.70  16.58  24.64 
1969 06 30.01  13.32  21.66 
1969 07 31.60  15.46  23.53 
1969 09 34.99  16.26  25.62 
1969 10 36.02  20.59  28.30 
1969 11 36.74  22.00  29.37 
1969 12 35.30  22.90  29.09 
1970 01 35.50  22.94  29.22 
1970 02 33.77  23.21  28.49 
1970 03 35.34  21.29  28.32 
1970 04 34.66  19.81  27.23 
1970 06 33.87 -99.99 -99.99 
1970 07 31.28  11.69  21.48 
1970 08 33.75  13.20  23.48 
1970 09 37.24  19.35  28.29 
1970 10 37.75  21.73  29.74 
1970 11 36.34  21.92  29.13 
1970 12 34.61  22.48  28.54 
1971 01 35.00  22.69  28.84 
1971 02 33.08  22.65  27.86 
1971 03 32.41  22.14  27.28 
1971 04 32.75  19.90  26.32 
1971 05 32.32  13.70  23.01 
1971 06 29.56  12.05  20.80 
1971 07 31.06  11.62  21.34 
1971 08 35.18  17.04  26.11 
1971 09 37.59 -99.99 -99.99 
1971 10 36.87 -99.99 -99.99 
1971 11 35.71 -99.99 -99.99 
1971 12 33.56  22.31  27.93 
1972 01 34.54  23.07  28.80 
1972 02 33.28  22.74  28.00 
1972 03 32.22  22.48  27.35 
1972 04 34.07  19.81  26.93 
1972 06 31.03  15.04  23.03 
1972 07 31.15  11.92  21.53 
1972 08 34.08  17.75  25.91 
1972 09 35.30  17.77  26.53 
1972 10 38.02  20.91  29.46 
1972 12 36.33 -99.99 -99.99 
1973 01 33.18 -99.99 -99.99 
1973 05 33.75 -99.99 -99.99 
1973 06 32.22  18.18  25.20 
1973 07 32.00 -99.99 -99.99 
1973 08 34.59 -99.99 -99.99 
1973 09 35.82 -99.99 -99.99 
1973 10 36.00  22.78  29.39 
1973 11 34.71 -99.99 -99.99 
1973 12 34.43 -99.99 -99.99 
1974 01 29.79  23.39  26.59 
1974 02 31.92  23.70  27.81 
1974 05 32.75  18.84  25.79 
1974 06 29.74 -99.99 -99.99 
1974 07 31.38 -99.99 -99.99 
1974 08 33.41 -99.99 -99.99 
1974 09 35.58  20.65  28.11 
1974 10 35.49  22.03  28.76 
1974 11 36.43 -99.99 -99.99 
1974 12 34.21  22.89  28.55 
1975 01 34.15  23.24  28.69 
1975 02 32.00  22.98  27.49 
1975 03 33.15  23.25  28.20 
1975 04 33.48  21.27  27.37 
1975 05 32.68  17.26  24.97 
1975 06 30.80  14.83  22.81 
1975 07 33.27  14.95  24.11 
1975 08 34.08  16.66  25.37 
1975 09 36.00  20.37  28.19 
1975 10 34.31  22.43  28.37 
1975 12 33.49  22.81  28.15 
1976 01 32.23  22.59  27.41 
1976 02 31.55  23.11  27.33 
1976 03 32.54  23.74  28.14 
1976 04 34.66  20.63  27.64 
1976 05 32.30  15.82  24.06 
1976 06 31.27  14.15  22.71 
1976 07 31.52  13.02  22.27 
1976 08 32.84  12.78  22.81 
1976 09 35.68  16.09  25.89 
1976 10 38.33  21.65  29.99 
1976 11 38.49  22.88  30.68 
1977 01 33.41  23.06  28.23 
1977 02 33.34  23.76  28.55 
1977 03 30.99  23.77  27.38 
1977 04 34.41  21.71  28.06 
1977 05 33.13  18.12  25.62 
1977 06 29.25  12.41  20.83 
1977 07 29.59  10.74  20.16 
1977 08 32.71  12.44  22.57 
1977 09 34.91  16.77  25.84 
1977 10 37.34  21.35  29.34 
1977 11 35.84  23.08  29.46 
1977 12 34.46  22.95  28.70 
1978 01 33.05  23.14  28.09 
1978 02 33.36  23.64  28.50 
1978 03 34.66  22.53  28.59 
1978 05 34.83  19.99  27.41 
1978 06 32.45  14.53  23.49 
1978 07 31.54  15.10  23.32 
1978 08 34.00  16.24  25.12 
1978 10 36.68  20.89  28.78 
1978 11 36.45  22.68  29.56 
1978 12 35.00  22.58  28.79 
1979 01 33.32  23.19  28.25 
1979 02 33.27  22.89  28.08 
1979 03 33.71  22.68  28.19 
1979 04 99.99  19.41 -99.99 
1979 05 33.49  19.08  26.28 
1979 06 32.28  14.08  23.18 
1979 07 31.64  13.45  22.54 
1979 08 34.25  14.43  24.34 
1979 11 37.97  22.42  30.19 
1979 12 34.40  22.46  28.43 
1980 01 33.75  22.91  28.33 
1980 02 32.02  23.00  27.51 
