PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/10-02:12:00 G02 46.8 43.3 11.8 +/- 0.93 16.2 +/- 0.93 0.030 / 0.040 G05 95.3 68.8 12.1 +/- 0.60 12.8 +/- 0.60 0.050 / 0.040 G12 188.7 50.8 15.7 +/- 1.04 19.6 +/- 1.04 0.030 / 0.030 G25 270.0 58.1 12.1 +/- 0.96 14.0 +/- 0.96 0.020 / 0.040 G29 317.1 39.0 11.0 +/- 1.02 16.3 +/- 1.02 0.040 / 0.050