PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/05-20:12:30
G07     31.0           69.5               16.8 +/-    0.51      17.8 +/-    0.51  0.150 / 0.250
G09     179.8          43.9               18.5 +/-    0.58      25.4 +/-    0.58  0.210 / 0.370
G11     127.2          30.8               20.0 +/-    1.29      34.5 +/-    1.29  0.180 / 0.460
G18     110.2          13.2               18.7 +/-    2.59      48.6 +/-    2.59  0.180 / 0.470
G23     159.2          10.6               19.1 +/-   12.71      52.7 +/-   12.71  0.030 / 0.030
G27     38.3           11.9               11.8 +/-    2.03      31.5 +/-    2.03  0.030 / 0.040
G28     267.2          49.6               17.4 +/-    3.75      22.1 +/-    3.75  0.040 / 0.090
G30     328.7          57.1               16.4 +/-    0.59      19.1 +/-    0.59  0.030 / 0.040