PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/08/24-14:58:00 G02 203.6 29.2 10.7 +/- 2.06 19.1 +/- 2.06 0.110 / 0.080 G06 157.0 68.1 10.1 +/- 0.35 10.8 +/- 0.35 0.110 / 0.100 G12 307.7 17.9 6.1 +/- 1.61 14.1 +/- 1.61 0.070 / 0.150 G17 35.4 49.5 7.7 +/- 0.79 9.8 +/- 0.79 0.070 / 0.140 G19 345.2 67.7 8.1 +/- 0.39 8.7 +/- 0.39 0.050 / 0.020 G24 299.0 38.2 7.9 +/- 3.65 11.8 +/- 3.65 0.040 / 0.030 G28 99.8 33.0 8.5 +/- 1.49 14.0 +/- 1.49 0.030 / 0.030