PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/30-19:12:30
G07     16.1           67.1                9.4 +/-    0.86      10.1 +/-    0.86  0.030 / 0.040
G08     70.1           49.8                9.5 +/-    0.76      12.0 +/-    0.76  0.030 / 0.030
G09     181.9          57.3               11.4 +/-    0.53      13.3 +/-    0.53  0.110 / 0.100
G11     133.4          24.5               14.2 +/-    0.63      28.1 +/-    0.63  0.150 / 0.130
G23     159.7          26.1               10.1 +/-    1.85      19.3 +/-    1.85  0.060 / 0.110
G27     44.3           23.2                6.8 +/-    2.24      13.8 +/-    2.24  0.060 / 0.110
G28     249.7          37.7               11.3 +/-    1.53      17.0 +/-    1.53  0.040 / 0.030
G30     315.6          47.1                9.2 +/-    0.83      12.0 +/-    0.83  0.040 / 0.030