PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/10/08-08:13:00 G01 87.2 31.3 6.7 +/- 0.53 11.4 +/- 0.53 0.030 / 0.050 G07 126.2 43.6 8.5 +/- 1.53 11.8 +/- 1.53 0.030 / 0.030 G11 68.9 41.7 6.3 +/- 0.96 8.9 +/- 0.96 0.050 / 0.050 G13 292.5 37.6 6.3 +/- 1.43 9.5 +/- 1.43 0.030 / 0.050 G15 314.4 10.6 -5.2 +/- 17.80 -14.4 +/- 17.80 0.080 / 0.120 G17 214.0 53.0 7.9 +/- 0.87 9.6 +/- 0.87 0.070 / 0.120 G19 213.8 30.0 5.2 +/- 1.81 9.1 +/- 1.81 0.040 / 0.060 G28 334.1 61.1 4.7 +/- 0.73 5.3 +/- 0.73 0.040 / 0.070 G30 102.7 78.0 7.0 +/- 0.70 7.1 +/- 0.70 0.050 / 0.070