PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/18-19:13:10
G07     331.4          57.9               11.5 +/-    0.42      13.4 +/-    0.42  0.040 / 0.050
G08     106.7          49.3               12.2 +/-    0.39      15.5 +/-    0.39  0.030 / 0.040
G09     211.9          80.3               12.9 +/-    0.44      13.1 +/-    0.44  0.060 / 0.060
G11     148.3          10.3               -0.8 +/-   21.38      -2.2 +/-   21.38  0.050 / 0.060
G16     44.4           16.8                8.0 +/-    2.82      19.1 +/-    2.82  0.450 / 0.540
G23     153.5          49.5               12.9 +/-    0.41      16.3 +/-    0.41  0.330 / 0.380
G27     63.8           35.8               11.3 +/-    1.59      17.6 +/-    1.59  0.180 / 0.130
G28     231.7          20.8               12.4 +/-    1.71      26.7 +/-    1.71  0.140 / 0.100
G30     297.2          31.5               11.5 +/-    1.37      19.4 +/-    1.37  0.030 / 0.030