PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/18-02:43:10
G08     292.5          22.1                8.5 +/-    0.95      17.7 +/-    0.95  0.050 / 0.080
G10     19.3           62.6               11.0 +/-    0.50      12.3 +/-    0.50  0.050 / 0.100
G14     232.7          49.2               12.5 +/-    1.75      16.0 +/-    1.75  0.130 / 0.140
G18     317.9          13.8                5.7 +/-    1.85      14.6 +/-    1.85  0.100 / 0.110
G20     70.3           50.4                9.2 +/-    0.78      11.6 +/-    0.78  0.040 / 0.020
G21     148.8          37.3               11.1 +/-    0.94      16.8 +/-    0.94  0.030 / 0.030
G24     53.2           24.0                7.4 +/-    2.34      14.9 +/-    2.34  0.090 / 0.090
G27     251.0          30.1               12.8 +/-    1.75      22.4 +/-    1.75  0.100 / 0.090
G31     182.2          10.6               -5.9 +/-   12.13     -16.3 +/-   12.13  0.140 / 0.310
G32     252.2          69.5                9.7 +/-    0.62      10.3 +/-    0.62  0.160 / 0.360