PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/02/05-23:42:40 G07 356.0 64.7 6.0 +/- 0.66 6.6 +/- 0.66 0.060 / 0.120 G08 77.8 52.6 6.8 +/- 0.81 8.3 +/- 0.81 0.050 / 0.090 G09 183.3 59.9 8.8 +/- 0.51 10.0 +/- 0.51 0.090 / 0.170 G11 138.7 21.0 7.9 +/- 4.13 17.0 +/- 4.13 0.130 / 0.160 G23 158.6 26.9 7.5 +/- 0.88 14.1 +/- 0.88 0.040 / 0.040 G27 44.2 22.6 5.3 +/- 2.79 10.9 +/- 2.79 0.040 / 0.040 G28 250.1 40.4 8.4 +/- 1.57 12.1 +/- 1.57 0.030 / 0.040 G30 316.4 47.9 6.2 +/- 0.61 8.0 +/- 0.61 0.030 / 0.030