PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/25-23:12:50
G01     318.1          21.3                8.0 +/-    2.11      17.0 +/-    2.11  0.130 / 0.290
G08     258.2          12.6                9.5 +/-   15.17      25.0 +/-   15.17  0.090 / 0.180
G10     83.6           50.3                9.4 +/-    0.95      11.8 +/-    0.95  0.050 / 0.060
G11     303.0          22.3                8.6 +/-    2.37      18.0 +/-    2.37  0.040 / 0.060
G14     294.3          69.8               10.5 +/-    0.76      11.1 +/-    0.76  0.220 / 0.320
G18     302.8          42.3               11.0 +/-    1.02      15.5 +/-    1.02  0.250 / 0.370
G20     107.6          26.5               11.4 +/-    1.48      21.5 +/-    1.48  0.070 / 0.250
G31     174.0          44.9               13.3 +/-    0.87      17.9 +/-    0.87  0.090 / 0.260
G32     12.2           66.0                8.1 +/-    0.62       8.7 +/-    0.62  0.050 / 0.090