PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/11/15-12:12:00 G02 45.4 43.7 3.7 +/- 1.18 5.1 +/- 1.18 0.030 / 0.030 G05 115.6 70.2 6.3 +/- 0.49 6.7 +/- 0.49 0.020 / 0.030 G12 184.6 50.5 8.0 +/- 1.06 10.1 +/- 1.06 0.030 / 0.050 G25 272.8 58.3 1.0 +/- 1.79 1.1 +/- 1.79 0.050 / 0.050 G29 315.7 37.2 4.8 +/- 1.04 7.3 +/- 1.04 0.040 / 0.040