PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/06/24-18:27:50 G02 205.5 40.5 10.8 +/- 0.61 15.6 +/- 0.61 0.050 / 0.120 G06 147.0 74.8 9.5 +/- 0.57 9.8 +/- 0.57 0.070 / 0.110 G12 309.7 18.4 8.9 +/- 2.57 20.3 +/- 2.57 0.060 / 0.080 G17 39.9 46.1 8.3 +/- 1.13 11.0 +/- 1.13 0.050 / 0.080 G19 15.1 60.8 8.6 +/- 0.74 9.7 +/- 0.74 0.080 / 0.100 G24 290.4 40.4 7.3 +/- 5.18 10.5 +/- 5.18 0.060 / 0.080 G28 105.6 31.9 8.2 +/- 0.64 13.8 +/- 0.64 0.070 / 0.170