PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/07-06:27:30
G02     45.6           44.2                3.9 +/-    2.18       5.4 +/-    2.18  0.030 / 0.030
G05     103.8          68.7                6.4 +/-    0.84       6.9 +/-    0.84  0.040 / 0.030
G12     191.8          55.0                6.5 +/-    0.66       7.8 +/-    0.66  0.020 / 0.040
G20     203.4          32.9                5.0 +/-    1.47       8.3 +/-    1.47  0.030 / 0.040
G25     275.8          57.8                6.1 +/-    1.79       7.1 +/-    1.79  0.110 / 0.130
G29     316.2          38.2                2.0 +/-    0.98       2.9 +/-    0.98  0.110 / 0.100