PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/04/10-01:28:10 G02 220.4 66.6 12.4 +/- 0.72 13.4 +/- 0.72 0.040 / 0.060 G06 48.9 70.4 11.0 +/- 0.31 11.6 +/- 0.31 0.070 / 0.060 G12 319.8 40.0 9.3 +/- 1.35 13.5 +/- 1.35 0.070 / 0.120 G17 59.0 33.0 8.9 +/- 1.38 14.7 +/- 1.38 0.050 / 0.160 G19 44.3 46.6 10.2 +/- 0.83 13.5 +/- 0.83 0.040 / 0.030 G24 259.4 40.2 11.9 +/- 4.06 17.2 +/- 4.06 0.030 / 0.030 G28 125.9 9.6 13.5 +/- 2.43 38.1 +/- 2.43 0.260 / 0.420