PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/27-08:43:00 G01 316.2 23.7 3.5 +/- 1.44 7.1 +/- 1.44 0.040 / 0.060 G10 90.3 49.0 4.6 +/- 0.30 5.9 +/- 0.30 0.040 / 0.060 G11 297.0 25.3 5.6 +/- 1.29 11.0 +/- 1.29 0.120 / 0.190 G14 306.9 69.5 3.5 +/- 0.52 3.7 +/- 0.52 0.090 / 0.130 G18 297.5 44.4 4.6 +/- 1.15 6.2 +/- 1.15 0.100 / 0.160 G20 114.4 10.9 2.4 +/- 3.04 6.6 +/- 3.04 0.140 / 0.190 G22 305.2 19.0 3.2 +/- 1.12 7.2 +/- 1.12 0.030 / 0.040 G25 95.4 11.7 -11.5 +/- 29.87 -31.1 +/- 29.87 0.030 / 0.050 G31 171.4 52.1 6.0 +/- 1.13 7.4 +/- 1.13 0.120 / 0.380 G32 22.8 60.8 3.5 +/- 0.40 4.0 +/- 0.40 0.120 / 0.390