PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/26-21:57:50
G10     251.3          27.4                7.5 +/-    2.20      13.8 +/-    2.20  0.030 / 0.040
G13     52.7           29.2                7.3 +/-    2.42      13.0 +/-    2.42  0.030 / 0.050
G15     91.4           59.4                7.7 +/-    0.93       8.8 +/-    0.93  0.110 / 0.250
G16     293.1          16.0                6.6 +/-    1.15      15.9 +/-    1.15  0.110 / 0.270
G20     253.6          16.2                3.6 +/-    2.98       8.7 +/-    2.98  0.100 / 0.150
G21     333.1          59.9                6.1 +/-    0.62       7.0 +/-    0.62  0.070 / 0.220
G26     265.4          15.4                7.1 +/-    1.31      17.5 +/-    1.31  0.030 / 0.040
G29     165.5          50.4                7.6 +/-    0.55       9.5 +/-    0.55  0.030 / 0.040