PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/05/11-00:43:00 G02 36.4 52.2 14.0 +/- 1.30 17.2 +/- 1.30 0.040 / 0.060 G05 129.9 64.9 13.9 +/- 0.95 15.2 +/- 0.95 0.040 / 0.050 G06 54.6 15.2 9.6 +/- 4.19 23.8 +/- 4.19 0.030 / 0.030 G12 200.2 66.5 13.4 +/- 0.78 14.5 +/- 0.78 0.040 / 0.030 G25 291.5 55.6 15.6 +/- 2.63 18.5 +/- 2.63 0.210 / 0.190 G29 311.2 33.3 11.2 +/- 1.27 18.3 +/- 1.27 0.160 / 0.260