PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/30-20:58:00
G05     49.0           16.9                7.2 +/-    0.93      17.1 +/-    0.93  0.070 / 0.140
G10     236.6          13.2               15.0 +/-    4.32      39.0 +/-    4.32  0.070 / 0.150
G13     74.4           36.1               10.0 +/-    0.68      15.5 +/-    0.68  0.050 / 0.060
G15     129.8          52.3               11.0 +/-    1.10      13.6 +/-    1.10  0.040 / 0.070
G16     311.9          13.8                9.8 +/-    1.34      25.2 +/-    1.34  0.090 / 0.370
G20     240.3          0.9                 7.7 +/-    1.87      24.3 +/-    1.87  0.120 / 0.380
G21     312.9          46.6               10.3 +/-    1.07      13.5 +/-    1.07  0.060 / 0.120
G26     284.9          20.9               11.6 +/-    2.16      25.0 +/-    2.16  0.060 / 0.140
G29     156.9          73.0               11.9 +/-    1.41      12.3 +/-    1.41  0.030 / 0.060