PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/12/19-16:43:00 G08 272.5 20.9 10.0 +/- 3.16 21.5 +/- 3.16 0.350 / 0.550 G10 52.0 59.0 8.0 +/- 1.40 9.2 +/- 1.40 0.130 / 0.480 G14 249.9 58.4 8.7 +/- 0.79 10.1 +/- 0.79 0.040 / 0.060 G20 91.2 37.5 9.2 +/- 0.76 14.0 +/- 0.76 0.040 / 0.050 G21 153.6 20.6 9.8 +/- 1.65 21.2 +/- 1.65 0.200 / 0.340 G24 43.3 15.3 6.6 +/- 1.79 16.2 +/- 1.79 0.130 / 0.260 G27 236.3 20.6 8.7 +/- 2.11 19.0 +/- 2.11 0.120 / 0.250 G31 180.1 23.0 11.9 +/- 2.38 24.4 +/- 2.38 0.120 / 0.330 G32 321.4 76.7 8.8 +/- 0.57 9.1 +/- 0.57 0.030 / 0.030