PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/08/09-22:12:50 G02 73.3 22.9 11.3 +/- 1.19 23.1 +/- 1.19 0.100 / 0.100 G05 45.7 48.0 11.8 +/- 0.70 15.3 +/- 0.70 0.070 / 0.090 G12 180.7 13.3 19.4 +/- 2.05 50.2 +/- 2.05 0.090 / 0.160 G13 113.7 27.4 15.2 +/- 0.93 28.1 +/- 0.93 0.070 / 0.180 G15 154.9 26.4 16.8 +/- 1.07 31.9 +/- 1.07 0.030 / 0.040 G18 224.6 16.1 18.0 +/- 3.59 43.6 +/- 3.59 0.030 / 0.040 G20 231.5 81.9 13.1 +/- 0.57 13.2 +/- 0.57 0.050 / 0.340 G21 286.3 28.7 11.8 +/- 2.69 21.2 +/- 2.69 0.060 / 0.260 G25 211.6 34.0 16.1 +/- 1.78 26.0 +/- 1.78 0.030 / 0.070 G29 346.5 75.6 13.8 +/- 0.63 14.2 +/- 0.63 0.030 / 0.060