PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/09/06-09:57:50 G01 126.8 11.8 4.6 +/- 3.55 12.4 +/- 3.55 0.040 / 0.040 G07 55.3 69.3 4.9 +/- 0.66 5.2 +/- 0.66 0.030 / 0.040 G08 49.3 37.8 2.8 +/- 0.90 4.2 +/- 0.90 0.040 / 0.040 G09 174.9 31.8 5.8 +/- 0.79 9.8 +/- 0.79 0.040 / 0.040 G11 116.6 35.7 6.0 +/- 0.75 9.4 +/- 0.75 0.110 / 0.320 G13 320.9 12.2 1.3 +/- 6.39 3.4 +/- 6.39 0.110 / 0.330 G17 199.4 16.4 4.4 +/- 1.33 10.5 +/- 1.33 0.090 / 0.360 G18 102.3 16.8 5.6 +/- 1.19 13.3 +/- 1.19 0.080 / 0.420 G28 275.8 52.5 5.9 +/- 1.04 7.2 +/- 1.04 0.100 / 0.380 G30 331.3 59.6 3.5 +/- 1.03 4.0 +/- 1.03 0.110 / 0.290