PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/03/23-02:12:40 G02 248.7 78.0 7.0 +/- 0.38 7.1 +/- 0.38 0.090 / 0.110 G05 170.5 17.9 7.2 +/- 2.41 16.8 +/- 2.41 0.110 / 0.100 G06 39.2 61.8 7.0 +/- 0.51 7.9 +/- 0.51 0.140 / 0.310 G12 320.8 50.6 6.4 +/- 1.26 8.0 +/- 1.26 0.200 / 0.350 G17 72.5 20.1 4.9 +/- 3.17 10.8 +/- 3.17 0.050 / 0.060 G19 58.0 37.8 6.0 +/- 1.12 9.1 +/- 1.12 0.050 / 0.060 G24 241.5 33.7 9.7 +/- 2.17 15.8 +/- 2.17 0.040 / 0.040 G25 316.6 15.0 3.8 +/- 2.25 9.4 +/- 2.25 0.050 / 0.040