PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/28-12:43:10
G02     34.3           54.8                4.7 +/-    0.96       5.6 +/-    0.96  0.040 / 0.020
G05     142.5          61.2                7.4 +/-    0.39       8.3 +/-    0.39  0.030 / 0.030
G06     52.3           20.3                3.7 +/-    3.11       8.0 +/-    3.11  0.030 / 0.030
G12     204.4          69.4                5.8 +/-    0.73       6.1 +/-    0.73  0.030 / 0.030
G20     199.2          24.0                7.2 +/-    3.76      14.4 +/-    3.76  0.250 / 0.200
G25     297.3          53.6                4.5 +/-    1.41       5.5 +/-    1.41  0.190 / 0.390
G29     309.3          31.8                4.3 +/-    1.55       7.2 +/-    1.55  0.190 / 0.260