PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/07/08-21:27:50 G02 52.5 38.4 8.7 +/- 1.09 13.0 +/- 1.09 0.060 / 0.060 G05 72.2 66.5 10.0 +/- 0.45 10.8 +/- 0.45 0.040 / 0.050 G12 187.2 42.8 10.7 +/- 0.87 14.9 +/- 0.87 0.070 / 0.080 G13 132.8 9.8 -5.2 +/- 18.81 -14.7 +/- 18.81 0.060 / 0.080 G21 265.2 11.8 3.9 +/- 21.74 10.3 +/- 21.74 0.360 / 0.460 G25 251.4 56.5 8.2 +/- 2.37 9.6 +/- 2.37 0.390 / 0.620 G29 324.2 48.2 9.3 +/- 0.65 11.9 +/- 0.65 0.150 / 0.390