PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/02/06-20:58:00 G03 188.9 17.9 12.9 +/- 3.55 30.0 +/- 3.55 0.080 / 0.230 G07 295.6 42.2 11.1 +/- 0.98 15.6 +/- 0.98 0.080 / 0.160 G08 137.0 31.0 12.7 +/- 0.79 21.8 +/- 0.79 0.190 / 0.260 G09 320.1 66.0 9.0 +/- 0.94 9.8 +/- 0.94 0.190 / 0.280 G16 42.9 39.6 8.6 +/- 0.76 12.6 +/- 0.76 0.050 / 0.090 G23 121.6 79.1 10.5 +/- 0.57 10.7 +/- 0.57 0.040 / 0.080 G26 44.2 13.9 7.7 +/- 1.42 19.8 +/- 1.42 0.050 / 0.080 G27 99.7 34.9 13.0 +/- 0.57 20.6 +/- 0.57 0.050 / 0.090 G30 275.6 13.8 10.9 +/- 2.32 28.0 +/- 2.32 0.030 / 0.030