PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/09/10-06:13:00 G03 190.6 19.8 5.2 +/- 1.46 11.6 +/- 1.46 0.030 / 0.040 G07 294.1 41.0 4.3 +/- 0.50 6.2 +/- 0.50 0.030 / 0.040 G08 142.8 28.5 7.1 +/- 0.74 12.8 +/- 0.74 0.040 / 0.080 G09 320.5 66.1 3.5 +/- 0.66 3.8 +/- 0.66 0.040 / 0.080 G16 42.7 35.0 3.0 +/- 0.70 4.8 +/- 0.70 0.030 / 0.040 G23 123.9 75.3 5.0 +/- 0.93 5.2 +/- 0.93 0.030 / 0.030 G27 97.4 34.3 5.7 +/- 1.50 9.1 +/- 1.50 0.050 / 0.100 G30 275.2 13.1 6.1 +/- 1.51 15.8 +/- 1.51 0.060 / 0.130