PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/04/24-01:58:00 G02 38.7 50.1 10.1 +/- 0.32 12.7 +/- 0.32 0.040 / 0.030 G05 124.0 66.4 13.0 +/- 0.71 14.0 +/- 0.71 0.030 / 0.030 G06 55.7 14.1 8.0 +/- 1.33 20.4 +/- 1.33 0.040 / 0.050 G12 197.7 64.0 15.2 +/- 0.92 16.7 +/- 0.92 0.040 / 0.050 G25 286.6 57.0 12.4 +/- 1.06 14.5 +/- 1.06 0.080 / 0.180 G29 313.4 35.9 10.3 +/- 1.40 16.1 +/- 1.40 0.070 / 0.160