PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/05/10-01:12:50 G02 46.1 43.6 9.8 +/- 0.37 13.5 +/- 0.37 0.040 / 0.060 G05 96.8 68.9 11.7 +/- 0.91 12.4 +/- 0.91 0.050 / 0.050 G12 191.4 53.7 13.5 +/- 1.57 16.3 +/- 1.57 0.040 / 0.080 G25 268.5 58.7 11.4 +/- 0.85 13.1 +/- 0.85 0.040 / 0.070 G29 319.4 42.5 11.6 +/- 1.16 16.2 +/- 1.16 0.050 / 0.060