PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/11/04-17:13:10 G05 47.2 22.3 17.8 +/- 29.61 36.9 +/- 29.61 0.090 / 0.150 G13 83.3 37.2 23.5 +/- 29.14 35.9 +/- 29.14 0.090 / 0.150 G15 129.1 49.2 28.7 +/- 33.84 36.6 +/- 33.84 0.050 / 0.090 G18 241.8 39.7 25.6 +/- 32.80 37.4 +/- 32.80 0.040 / 0.100 G20 20.7 71.9 3.4 +/- 12.99 3.5 +/- 12.99 0.040 / 0.050 G21 311.3 46.9 25.0 +/- 30.93 32.9 +/- 30.93 0.040 / 0.040 G25 200.7 13.5 22.7 +/- 32.71 58.4 +/- 32.71 0.080 / 0.300 G26 296.3 18.9 18.2 +/- 33.64 41.1 +/- 33.64 0.070 / 0.220 G29 147.5 70.4 32.0 +/- 31.44 33.7 +/- 31.44 0.180 / 0.350