PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/08/28-21:43:10 G10 249.1 25.6 12.3 +/- 1.48 23.8 +/- 1.48 0.040 / 0.070 G13 55.1 30.7 10.0 +/- 0.90 17.3 +/- 0.90 0.040 / 0.050 G15 97.3 59.5 11.1 +/- 0.91 12.7 +/- 0.91 0.130 / 0.480 G16 295.7 16.2 9.5 +/- 3.77 22.9 +/- 3.77 0.140 / 0.540 G20 251.4 13.5 4.9 +/- 0.91 12.6 +/- 0.91 0.060 / 0.170 G21 330.1 58.1 9.9 +/- 0.58 11.5 +/- 0.58 0.060 / 0.140 G26 267.9 16.4 12.0 +/- 2.10 28.7 +/- 2.10 0.030 / 0.040 G29 164.7 53.4 12.4 +/- 1.01 15.1 +/- 1.01 0.020 / 0.050