PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/20-01:12:50
G08     273.4          18.5                7.8 +/-    1.15      17.7 +/-    1.15  0.110 / 0.350
G10     60.4           57.6                7.8 +/-    0.62       9.1 +/-    0.62  0.080 / 0.290
G14     260.7          64.1                6.8 +/-    0.58       7.5 +/-    0.58  0.050 / 0.050
G18     313.3          31.2                9.0 +/-    1.32      15.4 +/-    1.32  0.040 / 0.060
G20     94.2           37.3                7.8 +/-    0.64      11.8 +/-    0.64  0.130 / 0.310
G21     155.1          17.8                9.1 +/-    1.22      21.1 +/-    1.22  0.140 / 0.240
G24     40.9           11.6                6.5 +/-    2.18      17.5 +/-    2.18  0.130 / 0.200
G27     233.2          17.4               10.3 +/-    2.78      24.2 +/-    2.78  0.120 / 0.220
G31     177.4          29.9               11.2 +/-    1.14      19.7 +/-    1.14  0.150 / 0.290
G32     331.8          75.1                7.8 +/-    0.42       8.1 +/-    0.42  0.150 / 0.350