PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/04/14-09:58:10 G08 267.5 18.6 6.7 +/- 2.38 15.3 +/- 2.38 0.130 / 0.340 G10 61.4 57.7 3.9 +/- 0.45 4.5 +/- 0.45 0.150 / 0.360 G11 311.5 17.5 -7.6 +/- 3.71 -17.8 +/- 3.71 0.030 / 0.020 G14 266.0 66.8 5.2 +/- 0.76 5.6 +/- 0.76 0.030 / 0.020 G18 312.1 33.4 4.4 +/- 1.17 7.2 +/- 1.17 0.030 / 0.030 G20 95.0 36.8 5.4 +/- 1.15 8.3 +/- 1.15 0.030 / 0.030 G21 154.3 14.3 4.8 +/- 1.60 12.1 +/- 1.60 0.130 / 0.300 G27 233.8 16.9 6.2 +/- 0.59 14.8 +/- 0.59 0.140 / 0.210 G31 179.1 28.8 5.8 +/- 1.73 10.4 +/- 1.73 0.040 / 0.060 G32 313.1 74.3 5.2 +/- 1.11 5.4 +/- 1.11 0.040 / 0.050