==== 20180908 18:00:00  -        GOES15       IR  16.26  116.27  30.0  11.12  16.81  115.59  12.30  16.66  116.22  11.42  16.96  115.36  -1.0   -1.0  0.05  3.36  9.49   0.11   0.50  35.5 
 ==== 20180908 18:00:00  -        GOES15   NearIR  16.26  116.27  30.0   9.64  16.76  115.64   8.20  16.49  116.66   9.74  16.76  115.64  -1.0   -1.0  0.30  0.82  2.31   0.28   2.06  47.9 
 ==== 20180908 18:00:00  *        GOES15      Vis  16.26  116.27  30.0  10.28  16.36  115.80   8.73  16.96  114.97  10.22  16.36  115.83  -1.0   -1.0  0.10  0.24  0.67   0.55   7.07  63.9