1983 06  24.14   7.80  15.96 
1983 09  18.78   4.44  11.61 
1983 10  16.08   1.86   8.97 
1983 11   5.38 -99.99 -99.99 
1984 01   3.43  -8.85  -2.71 
1984 02   9.09  -2.50   3.29 
1984 03   6.07  -5.70   0.18 
1984 04  13.98   -.12   6.93 
1984 05  18.48   3.69  11.08 
1984 06  23.38   8.32  15.85 
1984 07  29.03   9.97  19.50 
1984 08  28.58  10.65  19.61 
1984 09  16.41   4.00  10.20 
1984 10  10.82  -2.02   4.39 
1984 11   4.30 -99.99 -99.99 
1985 02  -0.08 -99.99 -99.99 
1985 05  21.65   4.73  13.19 
1985 06  23.22   6.63  14.92 
1985 07  30.25  10.74  20.49 
1985 08  23.82   8.14  15.98 
1985 09  13.83   3.37   8.60 
1986 05  19.10   5.15  12.12 
1986 06  25.65   9.85  17.75 
1986 07  25.60   9.00  17.29 
1986 08  27.23   9.02  18.12 
1987 01   5.40  -8.42  -1.51 
1987 02   7.96  -6.64   0.66 
1987 03   6.53  -3.58   1.47 
1987 04  19.24   2.78  11.01 
1987 05  22.03   5.37  13.70 
1987 06  25.92   9.97  17.95 
1987 07  25.90  10.05  17.97 
1987 08  21.98   7.77  14.87 
1987 09  23.48 -99.99 -99.99 
1988 05  22.63 -99.99 -99.99 
1988 06  27.73  10.63  19.18 
1988 07  28.29  10.48  19.38 
1988 08 -99.99   9.42 -99.99 
1988 09  21.87 -99.99 -99.99 
