PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/05/11-12:28:10 G03 233.7 69.8 3.0 +/- 0.93 3.2 +/- 0.93 0.050 / 0.050 G07 247.1 10.7 -4.6 +/- 18.14 -12.7 +/- 18.14 0.040 / 0.030 G09 301.3 15.0 2.6 +/- 1.47 6.4 +/- 1.47 0.130 / 0.350 G14 97.5 15.6 5.6 +/- 2.15 13.8 +/- 2.15 0.080 / 0.240 G16 135.6 55.6 6.8 +/- 0.77 8.0 +/- 0.77 0.050 / 0.060 G22 192.9 55.8 4.0 +/- 1.55 4.8 +/- 1.55 0.050 / 0.060 G23 317.9 47.9 1.4 +/- 1.38 1.8 +/- 1.38 0.130 / 0.400 G26 76.1 53.9 4.3 +/- 0.82 5.2 +/- 0.82 0.130 / 0.320 G31 51.1 21.5 0.7 +/- 2.04 1.5 +/- 2.04 0.210 / 0.260