PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/02/05-21:58:00 G07 326.7 56.2 9.7 +/- 0.86 11.5 +/- 0.86 0.180 / 0.290 G08 108.3 48.6 11.0 +/- 0.46 14.1 +/- 0.46 0.160 / 0.330 G09 213.7 81.3 10.1 +/- 0.45 10.2 +/- 0.45 0.050 / 0.050 G16 44.2 16.5 7.6 +/- 2.96 18.2 +/- 2.96 0.050 / 0.040 G23 153.1 52.3 12.1 +/- 0.35 14.8 +/- 0.35 0.030 / 0.040 G27 66.4 36.7 10.2 +/- 1.07 15.7 +/- 1.07 0.030 / 0.050 G28 230.7 20.1 10.5 +/- 2.11 23.0 +/- 2.11 0.200 / 0.500 G30 295.3 29.4 9.0 +/- 2.01 16.0 +/- 2.01 0.190 / 0.420