PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/09-05:57:40 G10 263.9 36.1 6.5 +/- 1.15 10.1 +/- 1.15 0.110 / 0.250 G13 43.5 20.8 4.0 +/- 1.70 8.7 +/- 1.70 0.140 / 0.330 G15 62.3 50.6 5.9 +/- 0.69 7.3 +/- 0.69 0.120 / 0.150 G16 281.1 13.0 5.0 +/- 1.26 13.0 +/- 1.26 0.110 / 0.120 G20 353.7 68.5 4.6 +/- 0.52 4.9 +/- 0.52 0.090 / 0.340 G21 355.5 69.9 5.1 +/- 0.65 5.4 +/- 0.65 0.110 / 0.320 G24 122.6 12.5 4.7 +/- 1.47 12.5 +/- 1.47 0.080 / 0.100 G27 319.7 17.0 3.1 +/- 2.04 7.5 +/- 2.04 0.070 / 0.080 G29 167.9 34.6 6.1 +/- 1.05 9.8 +/- 1.05 0.040 / 0.080