PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/08/09-02:58:00 G08 267.2 18.6 8.9 +/- 2.32 20.4 +/- 2.32 0.120 / 0.290 G10 59.6 58.6 8.2 +/- 0.33 9.4 +/- 0.33 0.120 / 0.230 G11 311.8 17.1 -2.0 +/- 17.78 -4.8 +/- 17.78 0.050 / 0.060 G14 262.8 64.3 8.8 +/- 0.79 9.6 +/- 0.79 0.040 / 0.060 G18 312.9 31.0 8.2 +/- 3.68 14.0 +/- 3.68 0.030 / 0.030 G20 68.6 62.3 11.7 +/- 1.05 13.0 +/- 1.05 0.040 / 0.040 G21 154.9 17.3 6.6 +/- 2.71 15.6 +/- 2.71 0.110 / 0.280 G27 232.7 16.6 10.0 +/- 2.13 23.9 +/- 2.13 0.110 / 0.250 G31 176.8 31.2 10.8 +/- 2.28 18.5 +/- 2.28 0.130 / 0.210 G32 343.0 74.2 8.7 +/- 0.72 9.0 +/- 0.72 0.130 / 0.210