PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/10/11-15:28:10 G02 63.6 29.2 8.0 +/- 2.30 14.3 +/- 2.30 0.020 / 0.040 G05 53.4 59.7 9.1 +/- 0.74 10.3 +/- 0.74 0.030 / 0.030 G12 181.8 26.1 8.7 +/- 2.44 16.5 +/- 2.44 0.080 / 0.410 G13 122.3 18.4 11.2 +/- 1.49 25.6 +/- 1.49 0.090 / 0.270 G15 160.1 17.2 10.9 +/- 1.91 25.6 +/- 1.91 0.090 / 0.060 G21 275.8 19.9 7.5 +/- 2.08 16.5 +/- 2.08 0.080 / 0.060 G25 230.5 48.3 9.4 +/- 1.98 12.1 +/- 1.98 0.090 / 0.170 G29 331.7 58.8 7.4 +/- 0.89 8.5 +/- 0.89 0.110 / 0.150