PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-17:27:40
G02     12.2           69.9               14.9 +/-    0.48      15.7 +/-    0.48  0.050 / 0.060
G05     163.1          43.3               17.4 +/-    0.90      24.1 +/-    0.90  0.060 / 0.070
G06     45.9           29.6               11.7 +/-    1.84      20.6 +/-    1.84  0.230 / 0.370
G12     260.7          79.6               14.0 +/-    0.99      14.2 +/-    0.99  0.220 / 0.340
G19     87.7           17.9               14.7 +/-    1.87      34.0 +/-    1.87  0.040 / 0.020
G20     197.5          11.3                3.6 +/-   31.64       9.8 +/-   31.64  0.020 / 0.020
G24     220.5          14.4               14.7 +/-    3.77      37.1 +/-    3.77  0.200 / 0.450
G25     311.7          43.9               15.0 +/-    0.96      20.5 +/-    0.96  0.170 / 0.510
G29     297.2          19.6               14.0 +/-    1.66      31.0 +/-    1.66  0.030 / 0.050