PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/25-22:27:40
G10     262.1          35.3               24.5 +/-    1.07      38.7 +/-    1.07  0.150 / 0.230
G13     44.2           21.6               16.7 +/-    1.41      35.3 +/-    1.41  0.180 / 0.250
G15     68.8           55.3               19.6 +/-    0.64      23.3 +/-    0.64  0.050 / 0.030
G16     281.6          13.9               18.7 +/-    1.76      47.8 +/-    1.76  0.050 / 0.030
G20     262.9          24.5               11.5 +/-    1.49      22.7 +/-    1.49  0.200 / 0.290
G21     350.0          68.1               19.5 +/-    0.96      20.9 +/-    0.96  0.310 / 0.310
G24     122.5          11.7               20.6 +/-    1.73      55.5 +/-    1.73  0.120 / 0.460
G27     320.6          14.8               18.0 +/-    1.31      44.9 +/-    1.31  0.150 / 0.490
G29     167.8          37.4               20.5 +/-    1.03      31.2 +/-    1.03  0.120 / 0.210