PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-18:57:50
G05     49.3           16.2                8.7 +/-    0.73      20.9 +/-    0.73  0.040 / 0.070
G10     237.8          16.2               10.9 +/-    3.83      26.2 +/-    3.83  0.040 / 0.070
G13     71.0           34.9               11.3 +/-    0.78      17.9 +/-    0.78  0.050 / 0.150
G15     120.4          54.2               11.3 +/-    0.62      13.5 +/-    0.62  0.050 / 0.160
G16     311.2          13.6                8.6 +/-    1.45      22.0 +/-    1.45  0.140 / 0.310
G20     251.5          40.1                9.9 +/-    0.99      14.4 +/-    0.99  0.120 / 0.280
G21     315.8          48.0                9.3 +/-    0.92      12.0 +/-    0.92  0.030 / 0.040
G26     284.6          19.9                9.8 +/-    2.02      21.5 +/-    2.02  0.030 / 0.050
G29     155.6          69.9               12.3 +/-    0.49      13.1 +/-    0.49  0.120 / 0.200