PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/04-13:57:40
G02     202.3          22.1                6.8 +/-    1.45      14.3 +/-    1.45  0.220 / 0.350
G06     164.2          61.0                8.0 +/-    0.77       9.0 +/-    0.77  0.240 / 0.480
G12     303.9          13.3                3.6 +/-   13.21       9.4 +/-   13.21  0.250 / 0.370
G17     29.7           54.3                5.0 +/-    1.05       6.0 +/-    1.05  0.350 / 0.360
G19     324.5          69.8                4.2 +/-    1.00       4.4 +/-    1.00  0.130 / 0.090
G24     305.3          34.4                4.0 +/-    1.58       6.4 +/-    1.58  0.090 / 0.120
G28     92.7           37.2                6.5 +/-    0.74      10.0 +/-    0.74  0.040 / 0.040
G30     158.3          12.2                6.7 +/-    2.43      17.8 +/-    2.43  0.040 / 0.040