PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/09/24-19:28:10 G05 50.9 14.1 7.5 +/- 2.73 19.2 +/- 2.73 0.040 / 0.060 G10 240.7 17.8 12.6 +/- 2.46 29.3 +/- 2.46 0.060 / 0.060 G13 66.8 35.0 10.9 +/- 2.22 17.3 +/- 2.22 0.100 / 0.430 G15 121.7 56.1 11.4 +/- 0.46 13.5 +/- 0.46 0.090 / 0.390 G16 307.4 14.6 5.7 +/- 2.32 14.2 +/- 2.32 0.100 / 0.170 G20 254.8 42.0 11.2 +/- 2.39 15.8 +/- 2.39 0.260 / 0.250 G21 320.2 51.7 9.6 +/- 0.76 11.8 +/- 0.76 0.030 / 0.040 G26 280.2 19.4 9.5 +/- 1.40 21.2 +/- 1.40 0.030 / 0.030 G29 159.9 65.0 12.1 +/- 0.40 13.2 +/- 0.40 0.080 / 0.090