PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/08/09-00:12:40 G10 252.5 27.4 13.0 +/- 1.82 24.0 +/- 1.82 0.100 / 0.330 G13 52.5 30.0 10.0 +/- 1.83 17.4 +/- 1.83 0.080 / 0.320 G15 85.1 58.0 13.6 +/- 0.79 15.7 +/- 0.79 0.120 / 0.320 G16 295.3 14.4 9.3 +/- 1.15 23.3 +/- 1.15 0.150 / 0.320 G18 271.6 56.5 11.6 +/- 0.93 13.6 +/- 0.93 0.080 / 0.110 G20 45.1 45.4 10.2 +/- 0.83 13.7 +/- 0.83 0.080 / 0.120 G21 336.5 62.0 12.3 +/- 0.61 13.7 +/- 0.61 0.030 / 0.040 G26 267.6 14.6 12.4 +/- 1.53 31.2 +/- 1.53 0.030 / 0.040 G29 164.6 44.8 14.9 +/- 1.17 20.1 +/- 1.17 0.050 / 0.050