PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/03/27-02:43:00 G02 232.5 74.2 5.9 +/- 0.61 6.1 +/- 0.61 0.030 / 0.070 G05 172.3 13.6 6.8 +/- 2.87 17.4 +/- 2.87 0.040 / 0.050 G06 42.1 63.4 5.0 +/- 0.63 5.6 +/- 0.63 0.060 / 0.110 G12 321.1 47.0 4.4 +/- 1.51 5.8 +/- 1.51 0.050 / 0.100 G17 66.0 27.7 2.5 +/- 1.31 4.7 +/- 1.31 0.040 / 0.060 G19 52.8 41.5 5.0 +/- 0.87 7.1 +/- 0.87 0.050 / 0.060 G24 250.3 37.0 7.7 +/- 1.18 11.7 +/- 1.18 0.060 / 0.110