PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/06/10-00:12:00 G02 48.6 42.0 8.6 +/- 0.37 12.1 +/- 0.37 0.020 / 0.040 G05 87.1 68.6 9.0 +/- 0.50 9.6 +/- 0.50 0.030 / 0.040 G12 186.6 46.4 13.0 +/- 1.92 17.2 +/- 1.92 0.040 / 0.060 G25 262.8 58.0 9.6 +/- 1.19 11.1 +/- 1.19 0.030 / 0.090 G29 318.9 41.2 11.0 +/- 1.35 15.8 +/- 1.35 0.040 / 0.080