PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-20:57:30
G10     304.4          54.6                9.5 +/-    1.07      11.4 +/-    1.07  0.040 / 0.040
G14     211.1          12.3                8.3 +/-   25.55      22.0 +/-   25.55  0.040 / 0.040
G15     45.7           25.2                8.9 +/-    2.09      17.3 +/-    2.09  0.150 / 0.530
G20     3.4            64.8                9.5 +/-    0.68      10.4 +/-    0.68  0.110 / 0.430
G21     104.5          72.7               10.4 +/-    0.60      10.8 +/-    0.60  0.120 / 0.130
G24     95.7           27.9               10.2 +/-    1.67      18.6 +/-    1.67  0.260 / 0.100
G27     297.3          35.7               10.0 +/-    1.45      15.7 +/-    1.45  0.100 / 0.090
G32     211.4          35.7               13.4 +/-    1.84      21.0 +/-    1.84  0.130 / 0.130