PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/10/25-17:43:10 G10 248.2 25.1 10.3 +/- 2.42 20.0 +/- 2.42 0.050 / 0.060 G13 56.0 31.0 9.2 +/- 0.49 15.8 +/- 0.49 0.040 / 0.050 G15 98.4 59.2 10.7 +/- 0.31 12.3 +/- 0.31 0.140 / 0.620 G16 298.6 15.5 6.6 +/- 2.74 16.3 +/- 2.74 0.140 / 0.540 G20 266.2 49.0 10.1 +/- 1.81 12.9 +/- 1.81 0.050 / 0.120 G21 332.1 59.0 8.0 +/- 0.95 9.2 +/- 0.95 0.050 / 0.150 G26 271.4 16.5 11.0 +/- 2.97 26.4 +/- 2.97 0.030 / 0.040 G29 163.4 53.0 11.1 +/- 1.69 13.6 +/- 1.69 0.030 / 0.040