1978 01 99.99  23.79 -99.99 
1978 02 32.11  24.21  28.16 
1978 03 31.76  24.03  27.89 
1978 06 30.11  18.04  24.07 
1978 07 99.99  18.36 -99.99 
1978 08 30.94  18.04  24.49 
1978 09 32.14  19.27  25.70 
1978 10 99.99  22.20 -99.99 
1978 11 34.00  23.56  28.78 
1978 12 99.99  23.42 -99.99 
1979 01 32.16  24.32  28.24 
1979 02 32.66  23.69  28.17 
1979 03 32.34  23.95  28.14 
1979 04 32.81 -99.99 -99.99 
1979 06 30.90  18.25  24.57 
1979 08 29.73  17.85  23.79 
1979 09 30.74  21.14  25.93 
1979 10 33.91  20.78  27.34 
1979 11 33.95  22.96  28.45 
1979 12 35.03  23.01  29.02 
1980 01 31.70  23.85  27.77 
1980 02 99.99  24.20 -99.99 
1980 03 32.65  23.77  28.21 
1980 04 31.06  22.75  26.90 
1980 05 31.24  21.25  26.24 
1980 06 30.09  18.39  24.24 
1980 07 29.58  15.95  22.76 
1980 08 29.95  17.41  23.68 
1980 09 31.07  17.61  24.34 
