PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/06/08-23:27:50 G02 52.1 38.5 12.2 +/- 1.72 18.1 +/- 1.72 0.050 / 0.050 G05 74.3 66.7 13.4 +/- 0.75 14.4 +/- 0.75 0.070 / 0.050 G12 188.1 44.6 16.6 +/- 0.79 22.5 +/- 0.79 0.050 / 0.100 G25 253.0 57.0 12.8 +/- 1.58 14.9 +/- 1.58 0.070 / 0.090 G29 324.1 48.1 12.8 +/- 0.76 16.5 +/- 0.76 0.040 / 0.060