PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/10/21-22:12:50 G01 320.2 15.0 9.5 +/- 3.31 23.5 +/- 3.31 0.130 / 0.330 G08 258.7 15.0 11.0 +/- 3.55 27.4 +/- 3.55 0.120 / 0.330 G10 74.4 54.6 11.6 +/- 0.29 13.9 +/- 0.29 0.220 / 0.510 G11 305.3 22.1 10.0 +/- 1.71 21.0 +/- 1.71 0.200 / 0.410 G14 285.6 69.7 12.9 +/- 0.64 13.6 +/- 0.64 0.070 / 0.200 G18 306.7 39.3 13.3 +/- 0.55 19.5 +/- 0.55 0.070 / 0.250 G20 102.2 31.6 13.7 +/- 0.64 23.2 +/- 0.64 0.040 / 0.050 G27 227.9 11.5 11.8 +/- 3.07 32.0 +/- 3.07 0.040 / 0.040 G31 177.4 37.4 15.4 +/- 2.10 23.4 +/- 2.10 0.120 / 0.280 G32 1.2 69.7 12.7 +/- 0.84 13.4 +/- 0.84 0.130 / 0.280