PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/07-18:27:40
G05     49.4           17.5               20.2 +/-    1.19      47.3 +/-    1.19  0.040 / 0.070
G10     238.3          15.3               22.7 +/-    2.14      56.0 +/-    2.14  0.040 / 0.060
G13     71.1           35.7               23.0 +/-    0.75      36.1 +/-    0.75  0.060 / 0.120
G15     126.3          54.0               26.5 +/-    0.85      31.9 +/-    0.85  0.060 / 0.130
G16     310.8          13.7               19.0 +/-    1.80      48.7 +/-    1.80  0.100 / 0.330
G20     251.3          39.5               25.1 +/-    1.15      36.8 +/-    1.15  0.110 / 0.340
G21     317.1          49.6               24.0 +/-    1.09      30.4 +/-    1.09  0.050 / 0.120
G26     284.1          19.9               21.1 +/-    1.57      46.5 +/-    1.57  0.050 / 0.130
G29     157.6          68.7               25.3 +/-    1.23      26.9 +/-    1.23  0.030 / 0.050