PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/08/31-00:27:40 G08 294.4 23.6 10.9 +/- 1.22 22.0 +/- 1.22 0.060 / 0.080 G10 1.6 62.8 8.5 +/- 0.35 9.4 +/- 0.35 0.060 / 0.110 G14 227.3 43.2 14.1 +/- 1.78 19.5 +/- 1.78 0.050 / 0.090 G20 332.9 60.7 11.3 +/- 0.38 12.8 +/- 0.38 0.040 / 0.070 G21 145.2 44.5 12.9 +/- 0.60 17.5 +/- 0.60 0.050 / 0.090 G24 57.2 25.5 9.0 +/- 0.86 17.4 +/- 0.86 0.060 / 0.100 G27 257.9 33.1 10.9 +/- 0.67 18.0 +/- 0.67 0.060 / 0.120 G32 241.8 67.4 11.2 +/- 0.43 12.1 +/- 0.43 0.060 / 0.120