PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/03/10-04:42:40 G02 31.3 56.7 4.7 +/- 0.57 5.6 +/- 0.57 0.030 / 0.030 G05 142.2 59.9 6.6 +/- 0.58 7.6 +/- 0.58 0.030 / 0.030 G06 50.3 22.7 1.7 +/- 1.00 3.5 +/- 1.00 0.040 / 0.060 G12 210.9 72.7 5.5 +/- 0.56 5.8 +/- 0.56 0.040 / 0.040 G19 97.3 11.7 4.6 +/- 2.19 12.3 +/- 2.19 0.030 / 0.040 G25 298.9 53.5 5.3 +/- 0.92 6.4 +/- 0.92 0.040 / 0.040 G29 307.7 30.4 3.6 +/- 1.00 6.3 +/- 1.00 0.060 / 0.100