PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/29-00:27:40 G02 36.5 52.6 11.0 +/- 0.49 13.5 +/- 0.49 0.040 / 0.040 G05 129.6 65.0 14.0 +/- 0.72 15.3 +/- 0.72 0.040 / 0.040 G06 55.9 12.6 8.7 +/- 1.21 22.8 +/- 1.21 0.030 / 0.040 G12 193.8 63.5 13.1 +/- 1.22 14.4 +/- 1.22 0.030 / 0.040 G25 292.5 54.9 11.5 +/- 0.56 13.8 +/- 0.56 0.040 / 0.050 G29 309.1 29.5 12.2 +/- 1.10 21.6 +/- 1.10 0.030 / 0.060