PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/07-20:28:10
G10     259.4          34.9               10.6 +/-    1.35      16.8 +/-    1.35  0.050 / 0.050
G13     45.7           22.7                8.3 +/-    1.85      17.2 +/-    1.85  0.040 / 0.050
G15     70.3           54.8                9.9 +/-    0.89      11.8 +/-    0.89  0.080 / 0.220
G16     286.0          14.7                7.1 +/-    3.13      17.7 +/-    3.13  0.090 / 0.260
G20     285.3          57.1                9.3 +/-    1.69      10.9 +/-    1.69  0.040 / 0.040
G21     346.3          66.0               11.2 +/-    0.98      12.1 +/-    0.98  0.040 / 0.040
G26     259.5          11.5               10.2 +/-    1.93      27.6 +/-    1.93  0.130 / 0.430
G27     321.6          12.3                5.5 +/-   16.98      14.6 +/-   16.98  0.150 / 0.360
G29     166.0          40.0               11.3 +/-    0.87      16.5 +/-    0.87  0.240 / 0.370