PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-06:28:00
G10     250.7          26.5                6.8 +/-    1.14      12.8 +/-    1.14  0.110 / 0.820
G13     53.7           30.2                4.5 +/-    1.11       7.9 +/-    1.11  0.120 / 0.680
G15     85.0           57.0                4.5 +/-    0.68       5.3 +/-    0.68  0.040 / 0.060
G16     295.2          15.5                1.7 +/-    3.56       4.1 +/-    3.56  0.040 / 0.040
G20     340.5          72.0                4.1 +/-    0.55       4.2 +/-    0.55  0.110 / 0.150
G21     334.0          60.4                4.1 +/-    0.61       4.6 +/-    0.61  0.110 / 0.130
G26     266.5          15.6                7.3 +/-    3.15      18.0 +/-    3.15  0.040 / 0.050
G29     165.0          49.9                5.6 +/-    1.19       7.1 +/-    1.19  0.030 / 0.050