PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/09/05-07:12:40 G03 195.5 28.7 5.2 +/- 2.19 9.3 +/- 2.19 0.030 / 0.040 G07 284.2 34.1 4.5 +/- 1.78 7.3 +/- 1.78 0.040 / 0.040 G08 143.1 23.8 8.1 +/- 1.28 16.2 +/- 1.28 0.090 / 0.320 G09 322.2 60.2 3.5 +/- 0.90 4.0 +/- 0.90 0.090 / 0.350 G16 44.5 41.7 3.9 +/- 0.61 5.5 +/- 0.61 0.030 / 0.040 G22 180.7 13.3 3.2 +/- 2.25 8.2 +/- 2.25 0.030 / 0.040 G23 57.9 83.9 2.7 +/- 0.70 2.8 +/- 0.70 0.050 / 0.080 G26 42.9 14.7 1.7 +/- 1.51 4.3 +/- 1.51 0.060 / 0.080 G27 107.4 30.6 6.6 +/- 1.03 11.4 +/- 1.03 0.040 / 0.090