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                6.3 +/-    1.43      13.1 +/-    1.43  0.190 / 0.320
G06     164.2          61.0                6.1 +/-    1.04       6.9 +/-    1.04  0.160 / 0.340
G12     303.9          13.3                2.6 +/-    2.19       6.7 +/-    2.19  0.090 / 0.110
G13     223.5          10.0                5.7 +/-    2.43      16.0 +/-    2.43  0.080 / 0.090
G17     29.7           54.3                3.9 +/-    0.74       4.6 +/-    0.74  0.130 / 0.260
G19     324.5          69.8                3.0 +/-    0.39       3.2 +/-    0.39  0.140 / 0.270
G24     305.3          34.4                2.0 +/-    1.39       3.1 +/-    1.39  0.050 / 0.040
G28     92.7           37.2                4.7 +/-    0.61       7.2 +/-    0.61  0.050 / 0.040
G30     158.3          12.2                6.4 +/-    2.14      17.1 +/-    2.14  0.170 / 0.480