1983 10 36.64  20.16  28.40 
1983 11 37.08  23.33  30.20 
1983 12 36.68  22.38  29.53 
1984 01 31.46  22.62  27.04 
1984 02 34.05  21.72  27.88 
1984 03 32.64  21.95  27.29 
1984 04 33.34  17.14  25.24 
1984 05 32.05  13.48  22.76 
1984 06 27.71   7.56  17.63 
1984 07 27.91   7.73  17.82 
1984 08 31.85  11.78  21.81 
1984 09 99.99  17.31 -99.99 
1984 10 36.90  20.11  28.50 
1984 11 39.29  23.61  31.45 
1984 12 35.34  24.34  29.84 
1985 01 37.05  23.00  30.02 
1985 02 33.68  23.15  28.41 
1985 03 33.84  21.97  27.90 
1985 04 32.86  17.15  25.00 
1985 05 31.57  13.65  22.61 
1985 06 27.22   7.50  17.36 
1985 07 28.31   6.09  17.20 
1985 08 32.99  12.33  22.66 
1985 09 34.16  14.98  24.57 
1985 10 36.41  20.86  28.63 
1985 11 38.38  23.38  30.88 
1985 12 37.78 -99.99 -99.99 
1986 01 33.18  23.02  28.10 
1986 02 34.49  22.35  28.42 
1986 03 35.03  21.22  28.12 
1986 04 33.28  17.23  25.25 
1986 05 32.66  12.82  22.74 
1986 06 28.49  13.84  21.16 
1986 07 27.42  12.43  19.92 
1986 08 28.93  10.48  19.70 
1986 09 34.30  16.48  25.39 
1986 10 36.68  19.98  28.33 
1986 11 38.14  22.26  30.20 
1986 12 39.40  24.13  31.76 
1987 01 33.34  23.20  28.27 
1987 02 31.50  22.99  27.24 
1987 03 34.61  20.20  27.40 
1987 04 34.09  17.17  25.63 
1987 05 32.18  14.78  23.48 
1987 06 29.64  11.36  20.50 
1987 07 29.20   7.82  18.51 
1987 08 30.30   9.67  19.98 
1987 09 34.15 -99.99 -99.99 
1987 10 38.39  21.47  29.93 
1987 11 99.99  24.53 -99.99 
1987 12 35.41  23.62  29.51 
1988 01 99.99  24.05 -99.99 
1988 02 99.99  22.93 -99.99 
1988 03 35.53  22.56  29.04 
1988 04 34.11  17.70  25.91 
1988 05 33.34  18.01  25.67 
1988 06 30.68   8.08  19.38 
1988 07 31.12   7.71  19.41 
1988 08 32.45  11.19  21.82 
1988 09 36.40  16.09  26.24 
1988 10 39.30  22.15  30.72 
1988 11 37.00  24.06  30.53 
1988 12 34.33  23.46  28.89 
1989 01 35.87  22.92  29.39 
1989 02 35.91  22.80  29.35 
1989 03 31.98  21.80  26.89 
1989 04 32.73  19.81  26.27 
1989 05 31.39  15.88  23.63 
1989 06 29.33  12.24  20.78 
1989 07 30.00  10.05  20.02 
1989 08 30.32  10.66  20.49 
1989 09 36.21  16.40  26.30 
1989 10 38.81  22.71  30.76 
1989 11 38.57  22.46  30.51 
1990 01 34.75  23.16  28.95 
1990 02 35.22  22.39  28.80 
1990 03 36.00  22.47  29.23 
1990 04 34.77  16.35  25.56 
1990 05 32.66  13.81  23.24 
1990 06 29.74  10.37  20.05 
1990 07 31.36   9.88  20.62 
1990 08 99.99   9.14 -99.99 
1990 11 99.99  22.99 -99.99 
1991 02 32.24  23.01  27.62 
1991 03 99.99  21.19 -99.99 
1991 04 33.53  19.00  26.26 
1991 06 30.88  12.86  21.87 
1991 09 99.99  14.72 -99.99 
1992 01 36.93 -99.99 -99.99 
1992 02 35.30  23.64  29.47 
1992 03 35.91  23.10  29.50 
1992 04 34.75 -99.99 -99.99 
1992 06 30.20 -99.99 -99.99 
1992 07 29.90   6.21  18.05 
1992 08 32.84  13.17  23.00 
1992 11 39.04  21.42  30.23 
1993 01 35.84  23.10  29.47 
1993 02 31.27  21.44  26.35 
1993 04 99.99  17.35 -99.99 
