PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/07/24-08:42:50 G03 228.1 64.8 4.5 +/- 1.11 4.9 +/- 1.11 0.040 / 0.070 G07 251.4 10.5 -4.7 +/- 17.24 -12.8 +/- 17.24 0.050 / 0.060 G09 307.2 24.2 3.8 +/- 0.92 7.6 +/- 0.92 0.170 / 0.490 G14 103.4 12.7 3.0 +/- 1.69 7.8 +/- 1.69 0.180 / 0.550 G16 109.1 62.1 5.3 +/- 0.69 5.9 +/- 0.69 0.040 / 0.060 G22 191.7 49.4 5.8 +/- 1.36 7.4 +/- 1.36 0.040 / 0.060 G23 324.3 54.2 4.6 +/- 0.78 5.6 +/- 0.78 0.040 / 0.050 G26 59.6 46.7 2.9 +/- 0.49 3.8 +/- 0.49 0.040 / 0.050 G31 55.8 13.6 1.2 +/- 1.20 3.1 +/- 1.20 0.090 / 0.390