PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/10/24-12:27:50 G02 244.5 74.9 6.6 +/- 0.74 6.8 +/- 0.74 0.040 / 0.040 G05 174.1 15.1 3.4 +/- 2.87 8.4 +/- 2.87 0.040 / 0.040 G06 40.2 56.4 4.7 +/- 1.70 5.5 +/- 1.70 0.160 / 0.390 G12 321.8 55.2 4.8 +/- 1.10 5.7 +/- 1.10 0.220 / 0.200 G17 73.3 19.3 3.5 +/- 0.96 7.8 +/- 0.96 0.130 / 0.100 G19 55.9 40.5 4.1 +/- 1.06 5.9 +/- 1.06 0.070 / 0.110 G24 239.3 33.3 7.4 +/- 1.59 12.2 +/- 1.59 0.110 / 0.250 G25 316.9 17.2 5.9 +/- 2.30 13.8 +/- 2.30 0.120 / 0.230