PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/08/27-21:12:50 G10 258.9 34.5 13.2 +/- 2.22 21.2 +/- 2.22 0.050 / 0.060 G13 46.0 23.1 8.7 +/- 0.60 17.8 +/- 0.60 0.040 / 0.060 G15 70.5 54.7 11.0 +/- 0.38 13.2 +/- 0.38 0.150 / 0.400 G16 286.7 14.7 10.3 +/- 2.14 25.8 +/- 2.14 0.140 / 0.450 G20 284.2 56.6 12.1 +/- 1.02 14.2 +/- 1.02 0.150 / 0.300 G21 345.6 65.7 8.8 +/- 1.13 9.6 +/- 1.13 0.130 / 0.310 G26 260.0 11.7 14.6 +/- 1.55 39.1 +/- 1.55 0.080 / 0.260 G27 321.8 11.9 6.9 +/- 18.34 18.5 +/- 18.34 0.070 / 0.260 G29 165.8 40.3 14.6 +/- 0.72 21.1 +/- 0.72 0.040 / 0.050