PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/03/08-04:57:20 G02 34.1 54.3 4.7 +/- 0.49 5.7 +/- 0.49 0.030 / 0.040 G05 137.2 62.4 6.5 +/- 0.55 7.2 +/- 0.55 0.020 / 0.040 G06 51.9 20.5 0.8 +/- 0.51 1.8 +/- 0.51 0.050 / 0.050 G12 204.6 69.7 5.3 +/- 0.98 5.7 +/- 0.98 0.040 / 0.050 G25 294.3 55.5 4.2 +/- 0.99 5.0 +/- 0.99 0.040 / 0.040 G29 309.9 32.6 3.5 +/- 1.52 5.8 +/- 1.52 0.040 / 0.040