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 13.8 +/- 1.19 15.2 +/- 1.19 0.090 / 0.260 G06 47.3 68.5 12.3 +/- 0.68 13.2 +/- 0.68 0.100 / 0.240 G12 319.5 40.5 10.9 +/- 1.43 15.6 +/- 1.43 0.040 / 0.070 G17 59.3 32.1 9.7 +/- 0.63 16.3 +/- 0.63 0.050 / 0.090 G19 46.8 44.1 11.1 +/- 1.40 15.2 +/- 1.40 0.060 / 0.070 G24 258.7 39.5 13.5 +/- 1.02 19.8 +/- 1.02 0.070 / 0.080 G28 124.6 15.0 10.1 +/- 1.74 25.0 +/- 1.74 0.040 / 0.070