PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/09/13-21:12:50 G10 297.6 52.7 11.2 +/- 1.08 13.6 +/- 1.08 0.050 / 0.100 G15 46.3 29.4 9.0 +/- 0.85 16.0 +/- 0.85 0.070 / 0.080 G20 352.7 65.2 10.9 +/- 1.23 11.8 +/- 1.23 0.040 / 0.050 G21 90.5 75.3 13.3 +/- 0.34 13.7 +/- 0.34 0.040 / 0.050 G24 100.3 26.3 14.0 +/- 0.70 26.5 +/- 0.70 0.060 / 0.120 G27 302.1 33.8 12.5 +/- 1.51 20.2 +/- 1.51 0.040 / 0.090 G32 209.6 31.3 13.3 +/- 1.76 22.7 +/- 1.76 0.080 / 0.140