PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/08/14-16:28:00 G02 257.0 77.4 6.7 +/- 0.50 6.9 +/- 0.50 0.040 / 0.060 G05 170.3 20.2 8.7 +/- 1.10 19.0 +/- 1.10 0.040 / 0.040 G06 39.7 52.2 6.8 +/- 0.85 8.4 +/- 0.85 0.140 / 0.430 G12 320.8 56.7 6.1 +/- 0.86 7.2 +/- 0.86 0.200 / 0.410 G17 73.1 22.1 6.6 +/- 1.40 13.7 +/- 1.40 0.030 / 0.040 G19 63.0 33.7 7.5 +/- 0.62 12.2 +/- 0.62 0.030 / 0.030 G24 240.8 31.5 9.9 +/- 1.36 16.8 +/- 1.36 0.150 / 0.150 G25 317.0 15.8 7.0 +/- 4.23 17.0 +/- 4.23 0.150 / 0.160