PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/08/10-18:12:50 G02 225.4 65.9 19.5 +/- 3.54 21.1 +/- 3.54 0.030 / 0.060 G06 44.4 65.6 -22.1 +/- 22.83 -24.0 +/- 22.83 0.040 / 0.070 G12 321.3 45.7 11.1 +/- 1.35 14.8 +/- 1.35 0.150 / 0.440 G17 66.9 24.3 19.3 +/- 9.42 38.4 +/- 9.42 0.200 / 0.390 G19 51.9 41.4 -47.2 +/- 51.16 -67.1 +/- 51.16 0.060 / 0.080 G24 255.7 38.7 2.7 +/- 10.61 3.9 +/- 10.61 0.050 / 0.100 G25 315.5 10.7 -11.2 +/- 37.44 -30.8 +/- 37.44 0.070 / 0.120