PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/28-18:42:40
G10     251.0          28.8               18.5 +/-    1.25      33.1 +/-    1.25  0.040 / 0.050
G13     52.5           28.4               13.3 +/-    1.12      24.1 +/-    1.12  0.040 / 0.050
G15     84.8           57.3               17.5 +/-    0.62      20.3 +/-    0.62  0.290 / 0.840
G16     294.7          15.9               10.0 +/-    3.86      24.3 +/-    3.86  0.310 / 0.730
G20     272.1          52.3               19.7 +/-    0.83      24.2 +/-    0.83  0.070 / 0.150
G21     334.1          59.8               17.0 +/-    0.53      19.3 +/-    0.53  0.060 / 0.170
G26     267.6          15.3               15.2 +/-    1.06      37.5 +/-    1.06  0.030 / 0.040
G29     163.9          50.4               18.0 +/-    2.88      22.7 +/-    2.88  0.030 / 0.050