PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/12/08-15:43:00 G10 248.5 24.2 8.2 +/- 0.61 16.2 +/- 0.61 0.040 / 0.040 G13 56.8 32.3 5.6 +/- 1.11 9.3 +/- 1.11 0.050 / 0.050 G15 89.0 56.9 8.7 +/- 0.62 10.2 +/- 0.62 0.220 / 0.400 G16 302.5 13.6 2.5 +/- 2.20 6.5 +/- 2.20 0.120 / 0.290 G18 267.2 56.1 6.0 +/- 1.76 7.1 +/- 1.76 0.080 / 0.130 G20 38.9 53.1 6.2 +/- 0.86 7.6 +/- 0.86 0.070 / 0.110 G21 338.3 62.2 5.4 +/- 0.53 6.0 +/- 0.53 0.050 / 0.040 G26 272.9 16.2 7.8 +/- 1.66 18.8 +/- 1.66 0.040 / 0.040 G29 161.8 48.0 9.4 +/- 0.58 12.2 +/- 0.58 0.130 / 0.300