PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/12/10-00:13:10 G03 224.5 63.7 8.0 +/- 1.17 8.8 +/- 1.17 0.040 / 0.050 G07 252.3 11.6 -1.2 +/- 18.58 -3.3 +/- 18.58 0.030 / 0.040 G09 307.0 22.7 7.4 +/- 2.20 15.2 +/- 2.20 0.030 / 0.030 G14 105.1 9.9 6.6 +/- 1.42 18.3 +/- 1.42 0.040 / 0.030 G16 122.6 63.1 7.9 +/- 0.48 8.7 +/- 0.48 0.140 / 0.170 G22 192.1 49.3 8.1 +/- 0.82 10.3 +/- 0.82 0.130 / 0.110 G23 323.7 53.6 6.7 +/- 0.81 8.2 +/- 0.81 0.100 / 0.140 G26 62.3 49.9 5.4 +/- 0.86 6.9 +/- 0.86 0.120 / 0.130 G31 55.0 16.8 3.6 +/- 3.16 8.5 +/- 3.16 0.060 / 0.270