PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-22:12:30
G10     291.7          49.9                7.7 +/-    2.87       9.8 +/-    2.87  0.080 / 0.100
G15     48.2           37.3                6.1 +/-    0.83       9.2 +/-    0.83  0.070 / 0.090
G20     342.3          65.4                7.9 +/-    0.65       8.6 +/-    0.65  0.090 / 0.120
G21     80.7           76.2                8.3 +/-    0.62       8.5 +/-    0.62  0.090 / 0.130
G24     99.3           24.7                9.7 +/-    1.56      19.1 +/-    1.56  0.110 / 0.090
G27     305.4          31.6                7.7 +/-    1.40      13.0 +/-    1.40  0.080 / 0.100
G29     168.5          11.8               13.3 +/-    1.18      35.8 +/-    1.18  0.030 / 0.030
G32     208.7          29.1               11.6 +/-    1.15      20.7 +/-    1.15  0.030 / 0.040