PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/08/03-17:12:30 G02 212.9 52.8 13.9 +/- 0.68 17.0 +/- 0.68 0.040 / 0.080 G06 69.9 76.2 12.4 +/- 0.83 12.8 +/- 0.83 0.060 / 0.100 G12 318.1 35.5 10.6 +/- 1.75 16.6 +/- 1.75 0.130 / 0.390 G17 53.7 34.9 10.9 +/- 0.95 17.3 +/- 0.95 0.100 / 0.330 G19 28.8 54.8 11.3 +/- 0.51 13.4 +/- 0.51 0.060 / 0.060 G24 270.3 42.8 12.3 +/- 0.86 17.1 +/- 0.86 0.040 / 0.070 G28 119.0 17.5 12.3 +/- 1.69 28.9 +/- 1.69 0.050 / 0.070