PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/10/26-09:57:20 G02 204.8 40.3 7.5 +/- 1.02 10.9 +/- 1.02 0.070 / 0.080 G06 144.5 74.4 5.6 +/- 0.52 5.7 +/- 0.52 0.070 / 0.090 G12 310.4 21.6 3.8 +/- 3.70 8.1 +/- 3.70 0.050 / 0.080 G17 40.0 45.8 2.5 +/- 0.46 3.3 +/- 0.46 0.070 / 0.070 G19 15.2 60.9 3.6 +/- 0.48 4.1 +/- 0.48 0.050 / 0.110 G24 293.0 39.1 5.1 +/- 0.90 7.6 +/- 0.90 0.050 / 0.110 G28 103.4 34.7 4.8 +/- 0.78 7.7 +/- 0.78 0.040 / 0.040