PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/12/11-22:42:30 G01 238.3 27.5 8.6 +/- 1.88 15.9 +/- 1.88 0.040 / 0.030 G03 310.2 55.6 6.7 +/- 0.59 7.9 +/- 0.59 0.050 / 0.040 G14 73.2 33.0 7.5 +/- 0.68 12.3 +/- 0.68 0.090 / 0.180 G16 160.4 28.1 10.2 +/- 1.36 18.5 +/- 1.36 0.110 / 0.180 G22 275.6 74.5 7.0 +/- 0.95 7.2 +/- 0.95 0.040 / 0.060 G23 295.8 26.5 7.2 +/- 2.59 13.5 +/- 2.59 0.040 / 0.060 G26 125.3 47.3 11.3 +/- 1.19 14.7 +/- 1.19 0.080 / 0.160 G31 40.2 48.0 6.5 +/- 0.43 8.5 +/- 0.43 0.100 / 0.180 G32 87.4 16.0 8.1 +/- 1.59 19.7 +/- 1.59 0.060 / 0.130