PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/08/09-16:28:10 G02 232.9 70.5 12.9 +/- 0.84 13.6 +/- 0.84 0.030 / 0.060 G05 173.5 12.6 12.5 +/- 2.77 32.9 +/- 2.77 0.040 / 0.060 G06 41.7 61.2 11.7 +/- 0.75 13.1 +/- 0.75 0.070 / 0.090 G12 320.9 47.6 9.5 +/- 0.92 12.4 +/- 0.92 0.070 / 0.110 G17 65.4 27.7 8.2 +/- 0.65 15.1 +/- 0.65 0.150 / 0.280 G19 54.3 39.3 11.5 +/- 0.58 16.8 +/- 0.58 0.110 / 0.220 G24 249.9 36.4 14.4 +/- 0.82 22.2 +/- 0.82 0.040 / 0.060