PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/12/06-06:58:10 G01 61.3 30.9 3.3 +/- 0.78 5.6 +/- 0.78 0.040 / 0.050 G06 183.4 10.7 -16.5 +/- 23.09 -45.3 +/- 23.09 0.040 / 0.040 G07 141.7 22.7 7.5 +/- 3.30 15.5 +/- 3.30 0.030 / 0.020 G11 49.1 24.5 3.5 +/- 2.47 6.8 +/- 2.47 0.020 / 0.020 G13 265.6 35.3 6.8 +/- 2.15 10.7 +/- 2.15 0.110 / 0.180 G15 294.5 16.7 3.4 +/- 1.08 8.1 +/- 1.08 0.100 / 0.190 G17 258.3 76.8 7.0 +/- 0.37 7.1 +/- 0.37 0.120 / 0.280 G19 232.0 51.2 6.8 +/- 1.92 8.5 +/- 1.92 0.140 / 0.280 G28 35.1 56.6 5.6 +/- 1.10 6.5 +/- 1.10 0.070 / 0.110 G30 142.3 52.1 8.5 +/- 0.44 10.4 +/- 0.44 0.070 / 0.130