PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/10/29-07:27:40 G01 64.3 31.0 4.1 +/- 0.82 7.1 +/- 0.82 0.040 / 0.030 G06 180.4 10.3 -14.9 +/- 29.59 -41.4 +/- 29.59 0.030 / 0.040 G07 139.1 26.9 6.9 +/- 1.81 13.0 +/- 1.81 0.070 / 0.110 G11 52.0 30.9 3.9 +/- 0.42 6.8 +/- 0.42 0.060 / 0.110 G13 267.9 38.0 7.5 +/- 1.39 11.3 +/- 1.39 0.050 / 0.120 G15 297.6 16.4 3.6 +/- 2.12 8.7 +/- 2.12 0.050 / 0.100 G17 239.0 72.1 7.1 +/- 0.76 7.4 +/- 0.76 0.080 / 0.120 G19 226.3 47.9 7.1 +/- 1.83 9.2 +/- 1.83 0.070 / 0.110 G28 10.6 61.0 3.6 +/- 0.50 4.0 +/- 0.50 0.040 / 0.060 G30 140.1 61.3 7.4 +/- 0.72 8.3 +/- 0.72 0.050 / 0.050