PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/08/11-22:12:50 G02 76.3 20.6 13.1 +/- 0.76 28.5 +/- 0.76 0.090 / 0.150 G05 44.9 44.5 12.2 +/- 0.40 16.5 +/- 0.40 0.110 / 0.120 G12 179.8 10.1 23.7 +/- 1.48 66.0 +/- 1.48 0.110 / 0.350 G13 110.0 29.6 17.7 +/- 1.45 31.2 +/- 1.45 0.090 / 0.270 G15 152.6 29.7 21.1 +/- 1.12 37.2 +/- 1.12 0.080 / 0.130 G18 226.4 19.3 17.5 +/- 2.42 39.3 +/- 2.42 0.090 / 0.130 G20 254.6 85.1 14.9 +/- 0.91 15.0 +/- 0.91 0.030 / 0.030 G21 289.4 30.9 15.3 +/- 1.30 26.3 +/- 1.30 0.020 / 0.060 G25 209.4 30.7 19.1 +/- 2.06 32.9 +/- 2.06 0.030 / 0.050 G29 353.3 79.5 14.2 +/- 0.54 14.4 +/- 0.54 0.030 / 0.050