PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/12/09-16:42:40 G08 292.2 23.6 6.7 +/- 1.39 13.4 +/- 1.39 0.090 / 0.120 G10 13.1 62.6 8.0 +/- 0.50 8.9 +/- 0.50 0.060 / 0.090 G14 228.9 42.4 10.4 +/- 1.73 14.6 +/- 1.73 0.080 / 0.120 G20 69.5 49.2 7.8 +/- 0.61 10.0 +/- 0.61 0.060 / 0.110 G21 146.9 39.2 9.1 +/- 0.83 13.4 +/- 0.83 0.050 / 0.090 G24 56.8 26.2 7.7 +/- 2.13 14.6 +/- 2.13 0.050 / 0.090 G27 253.6 32.0 7.7 +/- 2.28 12.9 +/- 2.28 0.080 / 0.210 G32 247.4 70.1 9.5 +/- 0.56 10.0 +/- 0.56 0.090 / 0.210