PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/07/07-01:43:00 G10 257.9 32.3 12.4 +/- 0.70 20.6 +/- 0.70 0.190 / 0.320 G13 47.0 24.8 9.3 +/- 0.80 18.3 +/- 0.80 0.130 / 0.280 G15 73.5 56.0 9.7 +/- 0.81 11.4 +/- 0.81 0.140 / 0.300 G16 286.3 14.7 7.4 +/- 1.20 18.5 +/- 1.20 0.170 / 0.350 G20 273.4 47.8 14.2 +/- 0.66 18.4 +/- 0.66 0.040 / 0.040 G21 343.5 65.3 7.9 +/- 0.72 8.6 +/- 0.72 0.040 / 0.050 G26 258.9 12.1 10.2 +/- 4.32 27.3 +/- 4.32 0.070 / 0.110 G27 321.8 11.6 1.3 +/- 26.96 3.5 +/- 26.96 0.070 / 0.100 G29 167.1 41.8 12.5 +/- 1.14 17.6 +/- 1.14 0.050 / 0.060