PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/09/29-22:58:10 G08 305.4 20.9 12.5 +/- 2.81 26.9 +/- 2.81 0.020 / 0.020 G10 336.5 60.6 10.7 +/- 0.74 12.1 +/- 0.74 0.030 / 0.030 G14 220.1 35.3 17.6 +/- 2.62 27.7 +/- 2.62 0.060 / 0.070 G18 44.1 57.9 13.5 +/- 0.52 15.6 +/- 0.52 0.070 / 0.080 G21 136.9 52.0 16.1 +/- 0.53 19.8 +/- 0.53 0.050 / 0.050 G24 71.8 30.4 16.2 +/- 1.85 28.1 +/- 1.85 0.050 / 0.040 G27 268.7 36.9 13.5 +/- 2.25 20.7 +/- 2.25 0.100 / 0.060 G32 226.4 52.0 16.1 +/- 2.25 19.9 +/- 2.25 0.070 / 0.080