PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/10/29-09:57:40 G02 207.0 46.3 5.2 +/- 0.69 6.9 +/- 0.69 0.070 / 0.120 G06 122.2 78.1 5.3 +/- 0.56 5.4 +/- 0.56 0.080 / 0.140 G12 313.1 26.3 3.5 +/- 1.01 6.6 +/- 1.01 0.030 / 0.040 G17 44.9 41.8 2.5 +/- 1.51 3.5 +/- 1.51 0.030 / 0.070 G19 23.7 57.0 4.4 +/- 0.98 5.2 +/- 0.98 0.070 / 0.110 G24 286.1 40.7 6.3 +/- 3.01 9.0 +/- 3.01 0.060 / 0.130 G28 108.7 31.0 5.6 +/- 1.22 9.5 +/- 1.22 0.080 / 0.100