PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/11-21:42:40
G10     244.9          23.3               12.1 +/-    1.75      24.6 +/-    1.75  0.050 / 0.060
G13     59.7           32.1                7.9 +/-    1.64      13.2 +/-    1.64  0.070 / 0.060
G15     101.1          57.7               10.6 +/-    1.14      12.3 +/-    1.14  0.060 / 0.130
G16     302.7          15.4                6.9 +/-    2.19      17.1 +/-    2.19  0.060 / 0.150
G20     261.5          46.2               12.0 +/-    2.94      15.9 +/-    2.94  0.030 / 0.040
G21     325.5          54.6               10.3 +/-    0.88      12.3 +/-    0.88  0.040 / 0.040
G26     275.0          17.8               10.3 +/-    1.46      23.9 +/-    1.46  0.100 / 0.370
G29     160.8          57.9               11.3 +/-    0.38      13.1 +/-    0.38  0.140 / 0.430