PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/08-04:57:50 G05 51.0 11.5 3.1 +/- 2.57 8.5 +/- 2.57 0.080 / 0.390 G10 239.5 16.0 7.0 +/- 1.16 17.1 +/- 1.16 0.070 / 0.330 G13 69.6 35.9 7.4 +/- 1.16 11.5 +/- 1.16 0.060 / 0.050 G15 115.2 55.1 7.2 +/- 0.89 8.5 +/- 0.89 0.080 / 0.040 G16 309.1 14.2 1.6 +/- 3.90 4.2 +/- 3.90 0.060 / 0.060 G20 272.0 65.3 6.2 +/- 0.37 6.8 +/- 0.37 0.060 / 0.060 G21 317.7 50.1 4.1 +/- 0.72 5.2 +/- 0.72 0.070 / 0.100 G26 280.9 20.1 2.8 +/- 2.15 6.1 +/- 2.15 0.070 / 0.080 G29 159.5 67.0 5.8 +/- 0.40 6.3 +/- 0.40 0.230 / 0.130