PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/05/05-04:13:00 G05 51.0 11.2 3.3 +/- 3.78 9.1 +/- 3.78 0.120 / 0.300 G10 239.8 17.8 8.7 +/- 1.73 20.2 +/- 1.73 0.120 / 0.300 G13 67.9 34.7 5.8 +/- 0.89 9.2 +/- 0.89 0.060 / 0.060 G15 112.1 55.4 8.0 +/- 0.30 9.5 +/- 0.30 0.060 / 0.080 G16 312.0 12.4 5.0 +/- 2.20 13.1 +/- 2.20 0.140 / 0.290 G20 253.9 41.4 7.8 +/- 1.48 11.1 +/- 1.48 0.130 / 0.350 G21 320.4 51.6 8.1 +/- 1.15 10.0 +/- 1.15 0.060 / 0.160 G26 284.1 18.9 5.7 +/- 1.48 12.8 +/- 1.48 0.060 / 0.120 G29 155.3 62.0 8.1 +/- 0.99 9.0 +/- 0.99 0.120 / 0.300