PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/08/05-18:43:00 G02 32.1 55.6 8.6 +/- 1.00 10.2 +/- 1.00 0.050 / 0.060 G05 137.5 63.2 10.8 +/- 0.51 11.9 +/- 0.51 0.040 / 0.060 G06 54.3 14.1 6.7 +/- 2.59 16.9 +/- 2.59 0.110 / 0.310 G12 198.2 67.3 9.3 +/- 0.75 9.9 +/- 0.75 0.190 / 0.220 G25 295.7 53.5 8.7 +/- 2.78 10.5 +/- 2.78 0.040 / 0.050 G29 308.3 29.2 7.8 +/- 1.50 13.9 +/- 1.50 0.050 / 0.050