PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-23:58:00
G01     314.7          27.2                6.6 +/-    2.57      12.3 +/-    2.57  0.120 / 0.460
G10     93.5           45.8                8.5 +/-    0.26      11.3 +/-    0.26  0.140 / 0.450
G11     295.6          25.1                8.3 +/-    1.24      16.3 +/-    1.24  0.070 / 0.130
G14     318.0          70.6                7.8 +/-    0.72       8.2 +/-    0.72  0.060 / 0.150
G18     294.0          46.7                7.8 +/-    0.94      10.2 +/-    0.94  0.040 / 0.050
G20     113.3          21.3                9.4 +/-    1.33      20.1 +/-    1.33  0.050 / 0.050
G22     305.2          15.6                4.9 +/-    2.08      12.0 +/-    2.08  0.130 / 0.430
G25     94.2           12.1                5.1 +/-   18.35      13.5 +/-   18.35  0.160 / 0.480
G31     171.2          53.2                9.9 +/-    0.88      12.0 +/-    0.88  0.040 / 0.090
G32     23.2           60.6                6.7 +/-    0.60       7.6 +/-    0.60  0.050 / 0.070