PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/11-23:28:10
G10     263.8          36.4               17.8 +/-    1.11      27.5 +/-    1.11  0.140 / 0.170
G13     43.3           20.4               10.0 +/-    2.86      21.8 +/-    2.86  0.230 / 0.200
G15     65.7           53.8               13.9 +/-    0.63      16.8 +/-    0.63  0.050 / 0.030
G16     280.2          13.3               13.6 +/-    2.60      35.2 +/-    2.60  0.050 / 0.040
G20     267.7          32.8                9.9 +/-    1.02      16.5 +/-    1.02  0.140 / 0.290
G21     353.3          69.3               12.4 +/-    0.71      13.1 +/-    0.71  0.140 / 0.340
G24     121.3          12.6               13.5 +/-    1.49      35.5 +/-    1.49  0.110 / 0.340
G27     320.0          16.3               12.9 +/-    1.68      31.1 +/-    1.68  0.140 / 0.320
G29     168.0          35.5               13.9 +/-    0.85      21.8 +/-    0.85  0.090 / 0.210