PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/08/17-01:43:00 G08 266.0 15.4 8.6 +/- 2.63 21.2 +/- 2.63 0.040 / 0.050 G10 74.1 53.9 6.7 +/- 0.25 8.1 +/- 0.25 0.040 / 0.060 G11 307.5 20.0 7.2 +/- 1.79 15.8 +/- 1.79 0.110 / 0.380 G14 279.7 68.5 6.7 +/- 0.47 7.1 +/- 0.47 0.120 / 0.280 G18 308.3 37.8 7.3 +/- 1.87 11.1 +/- 1.87 0.030 / 0.040 G20 101.9 31.9 6.7 +/- 0.43 11.3 +/- 0.43 0.030 / 0.040 G21 156.2 10.2 8.1 +/- 1.97 22.4 +/- 1.97 0.180 / 0.500 G27 227.3 12.0 8.7 +/- 4.56 23.1 +/- 4.56 0.150 / 0.360 G31 175.5 38.3 1.6 +/- 1.59 2.4 +/- 1.59 0.150 / 0.300 G32 356.8 70.8 6.1 +/- 0.85 6.4 +/- 0.85 0.110 / 0.330