PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/10-07:28:00
G10     251.7          27.3                6.5 +/-    0.97      12.0 +/-    0.97  0.100 / 0.420
G13     52.7           29.6                6.1 +/-    1.82      10.9 +/-    1.82  0.150 / 0.490
G15     82.2           56.6                6.8 +/-    0.89       8.0 +/-    0.89  0.050 / 0.040
G16     294.3          15.3                3.9 +/-    1.52       9.5 +/-    1.52  0.040 / 0.040
G20     8.8            68.5                5.6 +/-    0.66       6.0 +/-    0.66  0.040 / 0.040
G21     336.0          61.5                5.6 +/-    0.71       6.3 +/-    0.71  0.040 / 0.040
G26     265.6          15.1                5.8 +/-    0.85      14.3 +/-    0.85  0.030 / 0.040
G29     165.2          48.3                9.0 +/-    0.42      11.6 +/-    0.42  0.040 / 0.040