PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/24-19:58:10
G10     251.3          27.6               12.4 +/-    2.03      22.9 +/-    2.03  0.130 / 0.830
G13     52.7           29.2                9.4 +/-    1.02      16.7 +/-    1.02  0.130 / 0.650
G15     93.5           59.9               11.1 +/-    0.55      12.6 +/-    0.55  0.040 / 0.060
G16     294.3          15.6                5.6 +/-    3.42      13.7 +/-    3.42  0.040 / 0.050
G20     270.9          51.3               10.2 +/-    1.12      12.7 +/-    1.12  0.090 / 0.130
G21     335.2          60.9               10.8 +/-    0.68      12.2 +/-    0.68  0.110 / 0.130
G26     267.0          15.2               10.5 +/-    3.32      25.9 +/-    3.32  0.060 / 0.170
G29     164.9          49.5               11.9 +/-    1.42      15.0 +/-    1.42  0.050 / 0.170