PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-21:12:50
G10     259.9          33.9                9.6 +/-    1.74      15.6 +/-    1.74  0.160 / 0.310
G13     45.6           23.2                9.4 +/-    2.17      19.1 +/-    2.17  0.130 / 0.320
G15     75.3           58.0               -7.7 +/-   17.35      -9.0 +/-   17.35  0.110 / 0.310
G16     284.9          14.2                8.9 +/-    1.00      22.7 +/-    1.00  0.110 / 0.320
G20     285.0          56.9                8.8 +/-    2.12      10.3 +/-    2.12  0.240 / 0.420
G21     348.4          67.2                9.9 +/-    1.12      10.7 +/-    1.12  0.170 / 0.430
G24     123.8          10.5                2.1 +/-   40.68       5.9 +/-   40.68  0.110 / 0.090
G26     258.3          11.1               13.4 +/-    4.56      36.5 +/-    4.56  0.080 / 0.150
G27     321.6          12.4                3.7 +/-   21.13       9.8 +/-   21.13  0.050 / 0.040
G29     167.1          39.3               12.4 +/-    1.64      18.2 +/-    1.64  0.040 / 0.040