PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/02-13:27:40
G02     204.2          31.9                7.0 +/-    1.60      11.7 +/-    1.60  0.040 / 0.030
G06     155.9          69.7                7.5 +/-    0.47       7.9 +/-    0.47  0.040 / 0.030
G12     307.0          15.6                1.3 +/-    1.97       3.1 +/-    1.97  0.170 / 0.270
G17     33.2           51.3                6.2 +/-    1.55       7.7 +/-    1.55  0.100 / 0.340
G19     5.5            64.4                6.2 +/-    0.62       6.8 +/-    0.62  0.060 / 0.120
G24     298.3          37.2                3.8 +/-    4.03       5.8 +/-    4.03  0.060 / 0.110
G28     98.9           37.0                7.5 +/-    0.84      11.5 +/-    0.84  0.030 / 0.030