PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/20-23:28:00
G01     319.0          19.2                9.4 +/-    1.82      21.1 +/-    1.82  0.140 / 0.260
G08     260.6          13.8               10.6 +/-    2.02      27.2 +/-    2.02  0.140 / 0.330
G10     80.0           51.8                9.8 +/-    0.55      12.1 +/-    0.55  0.050 / 0.050
G11     305.0          21.3                8.7 +/-    1.62      18.5 +/-    1.62  0.040 / 0.050
G14     287.5          69.2                9.5 +/-    0.60      10.1 +/-    0.60  0.170 / 0.260
G18     305.2          40.5                9.8 +/-    0.95      14.2 +/-    0.95  0.200 / 0.290
G20     105.5          28.4                9.1 +/-    1.21      16.6 +/-    1.21  0.060 / 0.100
G31     174.7          42.2               12.0 +/-    0.70      16.8 +/-    0.70  0.070 / 0.100
G32     7.4            67.8                9.2 +/-    0.78       9.8 +/-    0.78  0.040 / 0.030