PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/12/10-21:28:00 G01 222.2 15.3 13.4 +/- 3.50 33.1 +/- 3.50 0.040 / 0.040 G03 285.9 67.9 10.3 +/- 0.53 11.0 +/- 0.53 0.040 / 0.040 G09 296.4 13.0 9.5 +/- 1.41 24.9 +/- 1.41 0.110 / 0.170 G14 85.6 26.8 9.4 +/- 1.11 17.6 +/- 1.11 0.110 / 0.170 G16 142.1 46.8 14.8 +/- 1.15 19.4 +/- 1.15 0.080 / 0.090 G22 216.2 69.1 11.1 +/- 0.68 11.8 +/- 0.68 0.060 / 0.090 G23 308.4 38.3 9.5 +/- 1.20 14.3 +/- 1.20 0.030 / 0.030 G26 94.5 54.4 9.9 +/- 0.98 11.8 +/- 0.98 0.030 / 0.030 G31 46.1 31.0 7.7 +/- 1.23 13.2 +/- 1.23 0.040 / 0.080