PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/07/18-03:27:40 G08 296.3 22.7 10.2 +/- 1.53 21.1 +/- 1.53 0.070 / 0.120 G10 1.3 62.8 9.8 +/- 0.45 10.9 +/- 0.45 0.090 / 0.130 G14 227.3 41.5 12.6 +/- 1.12 18.0 +/- 1.12 0.050 / 0.090 G20 34.9 63.8 10.4 +/- 0.38 11.4 +/- 0.38 0.050 / 0.090 G21 145.2 44.2 11.8 +/- 0.80 16.1 +/- 0.80 0.060 / 0.080 G24 57.7 26.0 8.4 +/- 0.66 16.0 +/- 0.66 0.040 / 0.070 G27 257.6 33.0 11.0 +/- 1.35 18.1 +/- 1.35 0.030 / 0.040 G32 241.9 67.4 10.6 +/- 0.72 11.4 +/- 0.72 0.030 / 0.030