PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/20-23:27:40
G01     319.0          19.2                7.2 +/-    1.21      16.2 +/-    1.21  0.140 / 0.180
G08     260.6          13.8                8.8 +/-    2.41      22.6 +/-    2.41  0.170 / 0.240
G10     80.0           51.8                9.7 +/-    1.31      11.9 +/-    1.31  0.040 / 0.040
G11     305.0          21.3                8.2 +/-    1.32      17.4 +/-    1.32  0.040 / 0.050
G14     287.5          69.2                8.0 +/-    0.82       8.5 +/-    0.82  0.080 / 0.090
G18     305.2          40.5                8.6 +/-    2.11      12.4 +/-    2.11  0.100 / 0.080
G20     105.5          28.4               10.3 +/-    0.73      18.7 +/-    0.73  0.130 / 0.410
G31     174.7          42.2               11.2 +/-    0.72      15.8 +/-    0.72  0.110 / 0.350
G32     7.4            67.8                8.1 +/-    0.82       8.7 +/-    0.82  0.030 / 0.030