PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-21:13:00
G10     263.6          36.3               11.2 +/-    0.77      17.3 +/-    0.77  0.140 / 0.230
G13     43.5           20.5                8.0 +/-    3.00      17.3 +/-    3.00  0.140 / 0.190
G15     68.7           55.9                9.8 +/-    0.58      11.6 +/-    0.58  0.150 / 0.330
G16     281.4          13.3                7.3 +/-    1.53      19.0 +/-    1.53  0.090 / 0.310
G20     291.3          58.8                9.3 +/-    0.72      10.6 +/-    0.72  0.220 / 0.430
G21     355.4          69.7               10.2 +/-    0.73      10.8 +/-    0.73  0.140 / 0.280
G24     120.8          12.6               13.6 +/-    2.58      35.8 +/-    2.58  0.040 / 0.030
G27     320.4          15.4                8.1 +/-    1.40      20.0 +/-    1.40  0.050 / 0.030
G29     167.7          35.3               11.6 +/-    1.15      18.3 +/-    1.15  0.160 / 0.330