PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/10/16-02:13:10 G01 225.5 16.4 5.4 +/- 2.23 13.0 +/- 2.23 0.040 / 0.050 G03 286.8 67.3 1.9 +/- 1.13 2.0 +/- 1.13 0.040 / 0.040 G09 296.3 12.9 4.5 +/- 3.22 11.8 +/- 3.22 0.110 / 0.230 G14 87.4 23.7 4.9 +/- 0.99 9.8 +/- 0.99 0.120 / 0.260 G16 144.2 46.4 8.5 +/- 1.30 11.2 +/- 1.30 0.100 / 0.190 G22 217.4 70.0 4.7 +/- 0.68 5.0 +/- 0.68 0.100 / 0.190 G23 307.3 36.7 3.8 +/- 1.49 5.9 +/- 1.49 0.040 / 0.080 G26 95.3 54.3 4.9 +/- 0.90 5.9 +/- 0.90 0.040 / 0.070 G31 45.6 31.8 2.1 +/- 0.78 3.5 +/- 0.78 0.060 / 0.090