PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/04/29-01:27:40 G02 2.2 74.8 7.6 +/- 0.38 7.8 +/- 0.38 0.020 / 0.030 G05 160.7 38.9 12.5 +/- 0.86 18.6 +/- 0.86 0.030 / 0.030 G06 43.0 36.0 6.5 +/- 0.46 10.2 +/- 0.46 0.050 / 0.070 G12 301.7 75.3 8.0 +/- 0.52 8.2 +/- 0.52 0.050 / 0.070 G17 88.2 12.2 8.6 +/- 1.49 22.9 +/- 1.49 0.100 / 0.120 G19 78.6 25.5 9.0 +/- 0.93 17.3 +/- 0.93 0.060 / 0.090 G24 225.1 19.6 12.8 +/- 1.20 28.4 +/- 1.20 0.130 / 0.190 G25 316.5 32.1 8.0 +/- 1.51 13.3 +/- 1.51 0.110 / 0.280 G29 289.2 10.9 -0.1 +/- 24.44 -0.2 +/- 24.44 0.040 / 0.040