PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/11-21:42:40
G07     15.6           68.2                9.5 +/-    0.47      10.2 +/-    0.47  0.150 / 0.110
G08     66.1           50.5                9.9 +/-    1.44      12.4 +/-    1.44  0.110 / 0.100
G09     180.9          50.2               12.7 +/-    1.31      16.0 +/-    1.31  0.120 / 0.200
G11     132.8          26.9                9.5 +/-    1.63      17.8 +/-    1.63  0.140 / 0.400
G23     159.3          17.0               11.1 +/-    1.09      26.4 +/-    1.09  0.050 / 0.040
G27     40.1           16.2                7.8 +/-    2.79      19.0 +/-    2.79  0.040 / 0.040
G28     260.0          46.2                9.3 +/-    3.68      12.3 +/-    3.68  0.030 / 0.030
G30     324.0          53.7                9.0 +/-    0.75      10.8 +/-    0.75  0.040 / 0.030