PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/10/24-18:13:10 G10 258.6 33.2 10.5 +/- 1.39 17.2 +/- 1.39 0.140 / 0.340 G13 46.5 24.0 9.1 +/- 1.40 18.1 +/- 1.40 0.050 / 0.050 G15 74.4 56.8 7.5 +/- 0.50 8.7 +/- 0.50 0.050 / 0.050 G16 287.1 14.4 8.1 +/- 1.98 20.5 +/- 1.98 0.110 / 0.360 G20 283.0 56.2 10.6 +/- 0.98 12.5 +/- 0.98 0.130 / 0.350 G21 348.8 67.0 6.6 +/- 0.88 7.1 +/- 0.88 0.100 / 0.190 G26 260.6 11.7 10.9 +/- 1.55 29.2 +/- 1.55 0.080 / 0.220 G27 322.1 10.8 -12.2 +/- 26.86 -33.4 +/- 26.86 0.030 / 0.050 G29 166.4 40.0 10.8 +/- 1.04 15.7 +/- 1.04 0.050 / 0.050