PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/05/02-00:13:00 G02 355.4 76.3 11.0 +/- 0.64 11.3 +/- 0.64 0.090 / 0.190 G05 162.0 36.7 16.9 +/- 1.23 26.0 +/- 1.23 0.090 / 0.180 G06 41.2 40.3 10.0 +/- 0.32 14.4 +/- 0.32 0.070 / 0.120 G12 309.4 70.7 10.8 +/- 0.51 11.4 +/- 0.51 0.080 / 0.100 G19 77.2 25.2 14.0 +/- 0.86 27.2 +/- 0.86 0.040 / 0.030 G24 225.5 20.6 16.9 +/- 1.14 36.7 +/- 1.14 0.020 / 0.040 G25 316.4 31.6 12.1 +/- 1.45 20.5 +/- 1.45 0.050 / 0.070 G29 289.1 13.4 14.2 +/- 1.96 36.7 +/- 1.96 0.050 / 0.070