PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/08/29-14:57:40 G02 226.2 65.6 10.3 +/- 1.27 11.2 +/- 1.27 0.050 / 0.100 G06 44.2 65.1 7.6 +/- 0.53 8.3 +/- 0.53 0.060 / 0.090 G12 320.4 44.3 8.1 +/- 2.38 11.0 +/- 2.38 0.050 / 0.090 G17 62.6 29.2 6.7 +/- 0.92 11.9 +/- 0.92 0.040 / 0.060 G19 50.2 41.9 7.4 +/- 0.59 10.4 +/- 0.59 0.180 / 0.480 G24 255.2 38.3 11.0 +/- 0.71 16.4 +/- 0.71 0.140 / 0.440 G28 126.5 13.0 10.2 +/- 1.86 26.7 +/- 1.86 0.030 / 0.030