PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/04-17:42:40
G10     265.0          37.3               12.1 +/-    1.73      18.4 +/-    1.73  0.040 / 0.030
G13     42.7           19.5               10.4 +/-    2.16      23.3 +/-    2.16  0.040 / 0.030
G15     63.9           52.8                9.8 +/-    0.89      11.9 +/-    0.89  0.150 / 0.320
G16     281.3          12.8               10.0 +/-    0.87      26.2 +/-    0.87  0.210 / 0.390
G20     294.0          59.4               11.0 +/-    0.83      12.5 +/-    0.83  0.170 / 0.210
G21     2.6            71.2               10.4 +/-    0.58      10.9 +/-    0.58  0.120 / 0.310
G24     118.5          13.5               12.7 +/-    1.96      32.7 +/-    1.96  0.040 / 0.050
G27     320.2          15.8               11.3 +/-    1.06      27.7 +/-    1.06  0.020 / 0.030
G29     167.2          32.9               12.2 +/-    1.19      20.1 +/-    1.19  0.130 / 0.250