PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/09/11-04:57:30 G03 259.0 69.6 8.2 +/- 1.06 8.6 +/- 1.06 0.030 / 0.040 G09 301.9 18.8 7.3 +/- 1.13 16.5 +/- 1.13 0.030 / 0.040 G14 95.1 18.5 5.7 +/- 1.60 13.0 +/- 1.60 0.110 / 0.210 G16 132.0 55.2 8.8 +/- 0.65 10.4 +/- 0.65 0.110 / 0.200 G22 201.3 61.3 9.6 +/- 0.63 10.8 +/- 0.63 0.040 / 0.070 G23 314.6 44.3 7.0 +/- 0.74 9.6 +/- 0.74 0.040 / 0.060 G26 76.6 53.0 6.7 +/- 0.50 8.2 +/- 0.50 0.040 / 0.050 G31 49.9 23.0 3.6 +/- 2.25 7.4 +/- 2.25 0.030 / 0.050