PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/10/11-18:12:50 G10 260.9 36.0 12.1 +/- 1.42 18.9 +/- 1.42 0.100 / 0.220 G13 44.7 21.7 9.1 +/- 0.65 19.2 +/- 0.65 0.090 / 0.230 G15 65.8 52.2 10.9 +/- 0.43 13.4 +/- 0.43 0.260 / 0.420 G16 284.2 14.5 7.5 +/- 2.30 18.9 +/- 2.30 0.060 / 0.050 G20 289.1 58.5 11.6 +/- 0.72 13.3 +/- 0.72 0.050 / 0.040 G21 349.5 67.2 10.6 +/- 0.35 11.4 +/- 0.35 0.060 / 0.080 G24 127.3 10.4 -13.0 +/- 32.91 -36.1 +/- 32.91 0.050 / 0.080 G26 258.3 10.8 10.8 +/- 1.98 29.6 +/- 1.98 0.080 / 0.260 G27 321.1 13.7 8.2 +/- 2.15 21.0 +/- 2.15 0.070 / 0.230 G29 166.4 38.9 14.5 +/- 1.27 21.5 +/- 1.27 0.130 / 0.430