PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/04/24-02:43:00 G02 34.3 54.6 8.2 +/- 0.48 9.8 +/- 0.48 0.030 / 0.040 G05 136.2 62.3 10.8 +/- 0.75 12.0 +/- 0.75 0.030 / 0.030 G06 53.7 16.0 5.6 +/- 1.19 13.5 +/- 1.19 0.040 / 0.040 G12 200.2 68.4 8.2 +/- 0.95 8.7 +/- 0.95 0.050 / 0.040 G19 99.5 10.8 7.1 +/- 1.42 19.4 +/- 1.42 0.040 / 0.060 G25 298.4 52.5 8.5 +/- 0.89 10.4 +/- 0.89 0.040 / 0.060 G29 306.9 27.3 5.1 +/- 1.53 9.4 +/- 1.53 0.070 / 0.070