PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/08/06-18:42:10 G02 33.8 54.2 7.3 +/- 0.91 8.8 +/- 0.91 0.050 / 0.060 G05 133.9 64.6 8.3 +/- 0.49 9.1 +/- 0.49 0.040 / 0.060 G06 55.3 12.7 5.9 +/- 2.84 15.6 +/- 2.84 0.060 / 0.050 G12 196.2 65.3 6.2 +/- 0.65 6.8 +/- 0.65 0.050 / 0.050 G25 292.9 54.6 8.1 +/- 2.04 9.8 +/- 2.04 0.090 / 0.140 G29 309.5 30.6 7.8 +/- 1.30 13.5 +/- 1.30 0.140 / 0.190