PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/08/09-16:12:30 G02 222.3 63.6 12.5 +/- 0.92 13.8 +/- 0.92 0.150 / 0.440 G06 47.3 68.5 11.2 +/- 0.37 11.9 +/- 0.37 0.120 / 0.330 G12 319.5 40.5 9.7 +/- 0.76 13.9 +/- 0.76 0.060 / 0.100 G17 59.3 32.1 7.8 +/- 1.68 13.1 +/- 1.68 0.070 / 0.080 G19 46.8 44.1 10.2 +/- 1.24 14.0 +/- 1.24 0.050 / 0.090 G24 258.7 39.5 12.8 +/- 1.87 18.8 +/- 1.87 0.040 / 0.080 G28 124.6 15.0 9.4 +/- 2.85 23.4 +/- 2.85 0.030 / 0.030