==== 20180731 23:00:00  -        GOES15       IR  12.81  117.10  30.0   9.62  11.46  117.27   9.15  11.16  117.04   9.89  11.43  117.25  -1.0   -1.0  0.15  1.39  3.92   0.33   1.21  50.3 
 ==== 20180731 23:00:00  -        GOES15   NearIR  12.81  117.10  30.0   6.74  11.73  117.84   8.83  14.31  117.89   6.78  11.96  117.20  -1.0   -1.0  0.10  1.64  4.63   0.16   1.02  36.0 
 ==== 20180731 23:00:00  *        GOES15      Vis  12.81  117.10  30.0   8.05  12.61  117.40   6.96  12.28  116.04   8.02  12.73  117.25  -1.0   -1.0  0.05  0.32  0.90   0.42   5.29  49.8