PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/09/11-07:42:30 G07 352.6 64.0 5.4 +/- 0.95 6.0 +/- 0.95 0.070 / 0.180 G08 87.5 53.7 7.7 +/- 0.79 9.3 +/- 0.79 0.080 / 0.160 G09 181.7 63.3 7.6 +/- 2.10 8.5 +/- 2.10 0.090 / 0.130 G11 140.8 19.8 7.1 +/- 2.65 15.7 +/- 2.65 0.060 / 0.110 G23 157.4 30.6 9.2 +/- 0.69 15.9 +/- 0.69 0.030 / 0.050 G27 47.8 26.5 4.4 +/- 2.01 8.3 +/- 2.01 0.040 / 0.050 G28 242.3 29.9 7.9 +/- 1.02 13.8 +/- 1.02 0.050 / 0.120 G30 308.4 40.4 4.7 +/- 1.79 6.8 +/- 1.79 0.050 / 0.120