PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/09/29-23:28:50 G08 291.9 23.4 10.8 +/- 1.50 22.0 +/- 1.50 0.030 / 0.030 G10 5.3 63.1 11.4 +/- 0.70 12.6 +/- 0.70 0.030 / 0.030 G14 230.3 47.9 16.4 +/- 2.55 21.2 +/- 2.55 0.080 / 0.110 G18 63.5 51.2 13.2 +/- 0.88 16.4 +/- 0.88 0.140 / 0.130 G21 145.8 38.5 16.1 +/- 0.83 24.1 +/- 0.83 0.040 / 0.080 G24 57.3 26.7 14.1 +/- 1.60 26.5 +/- 1.60 0.050 / 0.080 G27 252.6 31.4 14.1 +/- 2.89 24.1 +/- 2.89 0.090 / 0.090 G32 243.9 64.3 14.5 +/- 0.90 15.9 +/- 0.90 0.090 / 0.100