PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/10/07-08:28:00 G01 81.1 32.1 4.5 +/- 1.52 7.6 +/- 1.52 0.040 / 0.060 G07 130.3 39.0 6.6 +/- 0.89 9.7 +/- 0.89 0.040 / 0.080 G11 63.2 39.3 4.8 +/- 1.09 7.1 +/- 1.09 0.060 / 0.110 G13 286.2 38.7 1.5 +/- 3.17 2.2 +/- 3.17 0.050 / 0.110 G15 310.6 12.6 2.0 +/- 2.04 5.2 +/- 2.04 0.080 / 0.180 G17 218.2 58.1 7.3 +/- 1.14 8.4 +/- 1.14 0.080 / 0.250 G18 57.1 22.2 3.5 +/- 2.57 7.4 +/- 2.57 0.070 / 0.110 G19 216.4 34.7 7.4 +/- 1.34 11.8 +/- 1.34 0.110 / 0.120 G28 344.1 61.5 3.0 +/- 0.70 3.4 +/- 0.70 0.030 / 0.030 G30 119.0 74.0 5.5 +/- 0.53 5.7 +/- 0.53 0.030 / 0.040