PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/05/06-04:13:00 G05 51.8 9.7 3.3 +/- 1.86 9.3 +/- 1.86 0.110 / 0.210 G10 241.1 19.2 8.9 +/- 1.95 20.0 +/- 1.95 0.130 / 0.200 G13 65.7 34.2 6.2 +/- 0.98 10.1 +/- 0.98 0.040 / 0.050 G15 108.5 56.1 6.6 +/- 0.57 7.8 +/- 0.57 0.040 / 0.050 G16 310.3 12.9 -1.3 +/- 15.35 -3.3 +/- 15.35 0.110 / 0.330 G20 255.8 42.8 8.5 +/- 1.63 11.8 +/- 1.63 0.130 / 0.320 G21 322.2 52.8 7.0 +/- 0.77 8.6 +/- 0.77 0.060 / 0.110 G26 282.2 18.6 6.4 +/- 1.11 14.5 +/- 1.11 0.080 / 0.120 G29 156.5 60.0 7.1 +/- 0.57 8.1 +/- 0.57 0.040 / 0.040