PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-18:57:40
G05     49.3           16.2                9.0 +/-    1.35      21.8 +/-    1.35  0.040 / 0.070
G10     237.8          16.2               11.1 +/-    1.35      26.7 +/-    1.35  0.050 / 0.090
G13     71.0           34.9               12.2 +/-    1.61      19.4 +/-    1.61  0.070 / 0.110
G15     120.4          54.2               12.1 +/-    0.64      14.5 +/-    0.64  0.050 / 0.140
G16     311.2          13.6                8.1 +/-    2.68      20.8 +/-    2.68  0.030 / 0.040
G20     251.5          40.1               11.6 +/-    1.42      16.8 +/-    1.42  0.030 / 0.030
G21     315.8          48.0               10.9 +/-    0.93      14.1 +/-    0.93  0.090 / 0.260
G26     284.6          19.9                7.7 +/-    1.39      17.0 +/-    1.39  0.120 / 0.240
G29     155.6          69.9               12.8 +/-    0.42      13.6 +/-    0.42  0.130 / 0.370