PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/10/31-00:28:00 G01 219.0 11.6 12.3 +/- 7.18 33.2 +/- 7.18 0.040 / 0.040 G03 269.8 69.8 8.0 +/- 1.12 8.5 +/- 1.12 0.030 / 0.030 G09 299.1 14.7 7.7 +/- 2.07 19.4 +/- 2.07 0.120 / 0.180 G14 90.6 23.3 8.9 +/- 2.13 18.2 +/- 2.13 0.130 / 0.190 G16 135.8 51.9 11.0 +/- 0.76 13.5 +/- 0.76 0.180 / 0.350 G22 207.9 64.6 8.6 +/- 0.44 9.4 +/- 0.44 0.230 / 0.360 G23 313.0 43.0 8.2 +/- 0.75 11.3 +/- 0.75 0.050 / 0.060 G26 83.2 53.9 7.5 +/- 1.03 9.0 +/- 1.03 0.050 / 0.060 G31 48.7 25.3 7.0 +/- 3.01 13.5 +/- 3.01 0.040 / 0.030