PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/09/17-00:12:50 G08 269.1 19.5 6.6 +/- 2.53 14.7 +/- 2.53 0.180 / 0.260 G10 55.4 59.4 8.8 +/- 0.79 10.0 +/- 0.79 0.120 / 0.220 G14 258.9 63.5 8.1 +/- 1.16 8.9 +/- 1.16 0.040 / 0.050 G18 313.7 29.9 7.4 +/- 1.54 13.1 +/- 1.54 0.040 / 0.040 G20 92.0 38.8 8.4 +/- 0.88 12.4 +/- 0.88 0.200 / 0.160 G21 154.2 18.5 11.1 +/- 2.43 25.3 +/- 2.43 0.150 / 0.280 G24 40.0 10.3 6.9 +/- 3.26 19.0 +/- 3.26 0.110 / 0.240 G27 235.2 18.3 9.2 +/- 4.84 21.0 +/- 4.84 0.090 / 0.380 G31 178.5 27.5 10.9 +/- 1.95 20.1 +/- 1.95 0.090 / 0.310 G32 331.4 75.4 7.8 +/- 0.24 8.0 +/- 0.24 0.120 / 0.210