PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/03/03-05:27:40 G02 37.8 51.0 4.9 +/- 0.56 6.1 +/- 0.56 0.050 / 0.040 G05 128.6 65.5 5.7 +/- 0.53 6.2 +/- 0.53 0.050 / 0.050 G06 54.1 17.8 2.3 +/- 1.36 5.4 +/- 1.36 0.040 / 0.040 G12 198.7 65.2 6.0 +/- 0.76 6.5 +/- 0.76 0.030 / 0.040 G25 286.6 57.8 4.6 +/- 0.67 5.3 +/- 0.67 0.040 / 0.050 G29 312.9 35.5 4.4 +/- 1.13 7.0 +/- 1.13 0.030 / 0.040