PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/09/19-09:42:40 G01 80.6 32.3 5.4 +/- 0.66 9.1 +/- 0.66 0.030 / 0.030 G07 130.8 38.0 8.0 +/- 0.45 12.1 +/- 0.45 0.040 / 0.060 G11 62.2 38.5 4.9 +/- 0.50 7.3 +/- 0.50 0.030 / 0.070 G13 285.5 38.7 6.3 +/- 0.81 9.4 +/- 0.81 0.040 / 0.080 G15 310.8 12.3 2.7 +/- 1.17 7.1 +/- 1.17 0.030 / 0.050 G17 218.9 57.8 9.2 +/- 0.60 10.6 +/- 0.60 0.030 / 0.060 G18 56.5 22.0 1.8 +/- 0.72 3.8 +/- 0.72 0.060 / 0.140 G19 216.8 35.1 9.0 +/- 1.60 14.2 +/- 1.60 0.050 / 0.120 G28 346.1 61.5 4.3 +/- 0.84 4.8 +/- 0.84 0.090 / 0.100 G30 121.0 72.7 7.6 +/- 0.65 7.9 +/- 0.65 0.080 / 0.110