PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/09/25-22:58:00 G08 264.2 15.8 11.9 +/- 2.74 29.1 +/- 2.74 0.150 / 0.460 G10 73.3 54.0 9.9 +/- 0.39 11.9 +/- 0.39 0.140 / 0.520 G11 308.7 19.0 9.9 +/- 2.87 22.4 +/- 2.87 0.210 / 0.420 G14 275.6 67.2 10.1 +/- 0.64 10.8 +/- 0.64 0.170 / 0.610 G18 308.8 37.2 11.8 +/- 1.98 18.0 +/- 1.98 0.050 / 0.050 G20 101.8 31.3 11.3 +/- 0.56 19.2 +/- 0.56 0.040 / 0.070 G21 156.2 10.6 12.4 +/- 1.75 34.0 +/- 1.75 0.170 / 0.390 G27 227.5 12.4 11.1 +/- 7.18 29.4 +/- 7.18 0.180 / 0.260 G31 175.8 37.5 13.7 +/- 2.22 20.8 +/- 2.22 0.130 / 0.270 G32 358.4 70.8 10.0 +/- 0.77 10.6 +/- 0.77 0.120 / 0.280