PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/10/18-01:27:30 G03 259.5 70.0 3.7 +/- 0.60 3.9 +/- 0.60 0.030 / 0.050 G09 300.7 16.3 2.1 +/- 2.11 5.0 +/- 2.11 0.030 / 0.040 G14 93.5 20.9 3.9 +/- 1.36 8.5 +/- 1.36 0.040 / 0.070 G16 131.7 54.4 5.7 +/- 1.04 6.8 +/- 1.04 0.040 / 0.050 G22 204.0 61.8 5.2 +/- 0.83 5.8 +/- 0.83 0.140 / 0.310 G23 315.6 45.6 3.8 +/- 1.99 5.0 +/- 1.99 0.130 / 0.270 G26 77.6 53.2 1.9 +/- 0.69 2.3 +/- 0.69 0.040 / 0.040 G31 50.1 22.6 1.8 +/- 1.20 3.8 +/- 1.20 0.040 / 0.040