PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/11-06:13:10
G02     46.4           43.5                3.0 +/-    1.85       4.1 +/-    1.85  0.030 / 0.030
G05     100.3          68.8                5.4 +/-    0.74       5.7 +/-    0.74  0.030 / 0.030
G12     191.2          53.7                6.2 +/-    0.70       7.5 +/-    0.70  0.040 / 0.050
G20     203.8          33.8                5.3 +/-    2.58       8.6 +/-    2.58  0.040 / 0.050
G25     273.7          57.9                3.5 +/-    3.18       4.1 +/-    3.18  0.130 / 0.140
G29     316.8          39.0                1.2 +/-    1.12       1.7 +/-    1.12  0.100 / 0.120