PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/10/11-17:42:50 G02 70.3 23.9 11.9 +/- 35.02 23.9 +/- 35.02 0.080 / 0.220 G05 47.7 52.3 14.1 +/- 2.61 17.3 +/- 2.61 0.090 / 0.280 G12 183.0 19.7 15.9 +/- 34.20 35.1 +/- 34.20 0.090 / 0.240 G13 118.9 24.0 15.3 +/- 32.52 30.6 +/- 32.52 0.060 / 0.200 G15 156.1 22.9 15.0 +/- 37.01 30.8 +/- 37.01 0.020 / 0.060 G18 222.2 12.9 15.0 +/- 17.56 39.3 +/- 17.56 0.030 / 0.040 G20 219.6 74.3 9.8 +/- 33.70 10.1 +/- 33.70 0.050 / 0.130 G21 282.8 27.2 9.9 +/- 34.46 18.5 +/- 34.46 0.060 / 0.040 G25 218.8 40.3 13.2 +/- 33.41 19.1 +/- 33.41 0.050 / 0.130 G29 346.2 72.6 7.1 +/- 34.42 7.4 +/- 34.42 0.060 / 0.080