PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/10/03-19:28:00 G05 47.4 22.7 15.0 +/- 0.76 31.0 +/- 0.76 0.080 / 0.210 G13 81.8 37.4 19.2 +/- 0.48 29.2 +/- 0.48 0.110 / 0.210 G15 128.5 50.0 22.1 +/- 0.89 27.8 +/- 0.89 0.050 / 0.080 G18 242.7 40.1 20.5 +/- 1.27 29.7 +/- 1.27 0.040 / 0.070 G20 24.4 69.6 18.2 +/- 0.66 19.3 +/- 0.66 0.160 / 0.440 G21 311.3 46.6 16.5 +/- 1.50 21.7 +/- 1.50 0.150 / 0.340 G25 199.1 11.9 22.1 +/- 3.00 59.1 +/- 3.00 0.070 / 0.150 G26 295.0 18.9 16.6 +/- 1.55 37.6 +/- 1.55 0.060 / 0.150 G29 149.9 70.6 20.1 +/- 1.25 21.2 +/- 1.25 0.050 / 0.110