PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/06/01-00:42:40 G02 46.7 43.6 13.8 +/- 1.19 19.0 +/- 1.19 0.040 / 0.040 G05 94.7 68.9 14.9 +/- 0.57 15.8 +/- 0.57 0.040 / 0.050 G12 187.7 49.7 16.0 +/- 0.39 20.3 +/- 0.39 0.030 / 0.030 G25 268.6 58.2 14.3 +/- 1.96 16.5 +/- 1.96 0.030 / 0.030 G29 317.2 39.1 13.1 +/- 1.12 19.4 +/- 1.12 0.030 / 0.040