PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/27-22:58:00
G01     319.2          18.8               16.6 +/-    2.26      37.7 +/-    2.26  0.140 / 0.220
G08     260.8          14.1               25.3 +/-    2.84      64.3 +/-    2.84  0.160 / 0.280
G10     79.1           52.1               16.1 +/-    0.37      19.9 +/-    0.37  0.040 / 0.070
G11     305.7          20.9               17.0 +/-    2.35      36.6 +/-    2.35  0.040 / 0.060
G14     285.2          68.8               11.2 +/-    0.54      11.9 +/-    0.54  0.160 / 0.230
G18     305.8          40.1               18.2 +/-    1.14      26.5 +/-    1.14  0.190 / 0.270
G20     105.1          28.6               14.8 +/-    0.74      26.6 +/-    0.74  0.120 / 0.370
G31     174.9          41.5               22.7 +/-    0.71      32.2 +/-    0.71  0.090 / 0.340
G32     6.6            68.2               17.0 +/-    0.89      18.1 +/-    0.89  0.050 / 0.080