PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-19:42:40
G10     260.8          35.9               12.4 +/-    1.07      19.4 +/-    1.07  0.050 / 0.040
G13     44.8           21.7                8.3 +/-    1.79      17.5 +/-    1.79  0.050 / 0.040
G15     67.1           53.2                9.9 +/-    1.00      12.0 +/-    1.00  0.150 / 0.290
G16     284.5          14.4                8.5 +/-    1.00      21.4 +/-    1.00  0.110 / 0.300
G20     288.2          58.0               10.9 +/-    1.82      12.6 +/-    1.82  0.030 / 0.040
G21     348.8          67.0               10.3 +/-    0.71      11.0 +/-    0.71  0.030 / 0.040
G24     127.1          10.4                0.1 +/-   40.52       0.3 +/-   40.52  0.260 / 0.350
G26     258.3          10.8                9.0 +/-    3.84      24.6 +/-    3.84  0.160 / 0.350
G27     321.2          13.5                6.4 +/-    2.18      16.6 +/-    2.18  0.110 / 0.280
G29     166.3          38.7               11.8 +/-    1.34      17.5 +/-    1.34  0.100 / 0.270