PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/08/16-02:13:10 G08 300.4 22.4 7.8 +/- 1.32 16.1 +/- 1.32 0.030 / 0.030 G10 346.3 61.8 8.7 +/- 0.56 9.7 +/- 0.56 0.030 / 0.030 G14 223.3 40.3 13.1 +/- 0.69 19.0 +/- 0.69 0.040 / 0.070 G18 49.8 56.4 8.1 +/- 0.89 9.5 +/- 0.89 0.040 / 0.050 G21 140.7 48.7 12.0 +/- 1.10 15.4 +/- 1.10 0.050 / 0.100 G24 66.2 29.5 8.4 +/- 0.76 14.9 +/- 0.76 0.050 / 0.090 G27 262.4 35.3 11.9 +/- 1.15 18.8 +/- 1.15 0.060 / 0.120 G32 232.0 58.6 11.9 +/- 0.41 13.7 +/- 0.41 0.060 / 0.090