PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/08/05-19:27:20 G02 25.9 60.9 7.6 +/- 0.55 8.6 +/- 0.55 0.040 / 0.060 G05 146.7 57.9 10.2 +/- 0.73 11.7 +/- 0.73 0.030 / 0.040 G06 51.9 17.6 6.4 +/- 0.56 15.0 +/- 0.56 0.040 / 0.050 G12 195.1 70.2 8.8 +/- 0.88 9.3 +/- 0.88 0.020 / 0.040 G19 95.1 15.3 9.3 +/- 0.58 22.9 +/- 0.58 0.040 / 0.050 G25 302.6 50.9 7.9 +/- 1.10 9.8 +/- 1.10 0.040 / 0.060 G29 303.4 23.4 8.2 +/- 2.18 16.7 +/- 2.18 0.070 / 0.160