PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-18:58:00
G05     49.7           16.7                7.6 +/-    1.18      18.0 +/-    1.18  0.110 / 0.320
G10     238.8          15.7               10.3 +/-    1.50      25.3 +/-    1.50  0.100 / 0.410
G13     70.3           35.6                9.6 +/-    0.76      15.1 +/-    0.76  0.100 / 0.070
G15     126.0          54.4               10.6 +/-    0.97      12.7 +/-    0.97  0.100 / 0.070
G16     310.2          13.9                2.8 +/-    1.92       7.1 +/-    1.92  0.080 / 0.170
G20     251.9          39.9               10.5 +/-    1.06      15.3 +/-    1.06  0.090 / 0.250
G21     317.5          49.9               10.1 +/-    1.10      12.7 +/-    1.10  0.050 / 0.130
G26     283.3          19.9                8.3 +/-    1.68      18.3 +/-    1.68  0.060 / 0.120
G29     158.1          68.2               10.4 +/-    0.99      11.1 +/-    0.99  0.060 / 0.050