PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/10/10-18:13:00 G05 48.9 18.7 11.0 +/- 2.00 25.0 +/- 2.00 0.040 / 0.070 G10 237.5 14.4 12.4 +/- 1.83 31.4 +/- 1.83 0.050 / 0.070 G13 72.6 35.9 12.5 +/- 0.98 19.6 +/- 0.98 0.130 / 0.310 G15 127.9 53.3 14.5 +/- 0.42 17.7 +/- 0.42 0.120 / 0.340 G16 312.0 13.3 9.6 +/- 2.13 24.8 +/- 2.13 0.060 / 0.090 G20 250.1 38.6 14.8 +/- 0.76 22.1 +/- 0.76 0.070 / 0.090 G21 316.0 48.9 13.2 +/- 1.30 16.8 +/- 1.30 0.020 / 0.040 G26 285.5 20.0 8.8 +/- 0.99 19.3 +/- 0.99 0.030 / 0.040 G29 156.7 70.1 14.4 +/- 0.58 15.2 +/- 0.58 0.110 / 0.130