PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/12/11-01:58:00 G07 328.9 56.8 3.4 +/- 0.82 3.9 +/- 0.82 0.160 / 0.380 G08 102.9 49.8 6.7 +/- 0.46 8.5 +/- 0.46 0.140 / 0.400 G09 191.0 77.1 4.7 +/- 0.68 4.8 +/- 0.68 0.050 / 0.070 G11 147.4 10.9 1.6 +/- 17.10 4.3 +/- 17.10 0.050 / 0.070 G16 45.3 11.7 1.6 +/- 2.08 4.2 +/- 2.08 0.040 / 0.050 G23 154.6 49.4 7.8 +/- 0.70 9.9 +/- 0.70 0.030 / 0.040 G27 62.6 35.7 3.4 +/- 0.55 5.3 +/- 0.55 0.120 / 0.100 G28 232.9 23.5 7.0 +/- 1.88 14.1 +/- 1.88 0.090 / 0.110 G30 297.2 30.6 3.5 +/- 1.53 6.0 +/- 1.53 0.040 / 0.050