PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/10/11-08:27:50 G01 71.9 32.2 4.7 +/- 0.76 7.9 +/- 0.76 0.040 / 0.030 G07 135.5 32.2 8.0 +/- 0.90 13.5 +/- 0.90 0.040 / 0.030 G11 56.3 34.8 5.4 +/- 0.86 8.6 +/- 0.86 0.100 / 0.060 G13 276.3 39.0 6.2 +/- 0.93 9.1 +/- 0.93 0.110 / 0.070 G15 304.1 15.0 1.4 +/- 2.59 3.5 +/- 2.59 0.050 / 0.050 G17 227.0 65.6 7.2 +/- 0.84 7.9 +/- 0.84 0.040 / 0.050 G19 221.3 41.9 6.9 +/- 1.57 9.7 +/- 1.57 0.100 / 0.220 G28 359.0 61.4 4.9 +/- 0.98 5.5 +/- 0.98 0.100 / 0.210 G30 132.9 67.0 7.6 +/- 0.30 8.2 +/- 0.30 0.110 / 0.130