PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/10/14-17:28:00 G10 247.4 25.9 11.7 +/- 1.28 22.3 +/- 1.28 0.030 / 0.060 G13 56.5 30.6 7.9 +/- 0.77 13.7 +/- 0.77 0.040 / 0.060 G15 92.1 57.5 9.1 +/- 0.53 10.5 +/- 0.53 0.050 / 0.130 G16 298.8 16.0 7.3 +/- 4.32 17.7 +/- 4.32 0.050 / 0.140 G20 266.6 50.0 9.2 +/- 1.30 11.6 +/- 1.30 0.030 / 0.050 G21 329.4 57.0 7.8 +/- 0.82 9.1 +/- 0.82 0.030 / 0.040 G26 271.7 16.8 8.5 +/- 1.70 20.1 +/- 1.70 0.200 / 0.760 G29 162.5 55.4 12.0 +/- 0.80 14.3 +/- 0.80 0.150 / 0.660