PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/28-00:12:30 G02 28.6 59.3 10.9 +/- 0.95 12.5 +/- 0.95 0.040 / 0.030 G05 144.7 58.1 14.6 +/- 0.75 16.9 +/- 0.75 0.030 / 0.020 G06 51.3 19.0 9.9 +/- 2.09 22.4 +/- 2.09 0.030 / 0.030 G12 205.2 72.8 14.2 +/- 0.18 14.8 +/- 0.18 0.030 / 0.030 G19 95.3 14.4 12.1 +/- 2.69 30.6 +/- 2.69 0.100 / 0.150 G25 304.2 49.3 10.4 +/- 4.85 13.2 +/- 4.85 0.060 / 0.060 G29 303.2 23.3 11.6 +/- 0.78 23.6 +/- 0.78 0.160 / 0.180