PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/25-03:42:30 G05 50.0 13.6 4.0 +/- 1.66 10.4 +/- 1.66 0.090 / 0.290 G10 237.9 14.2 11.3 +/- 2.78 28.6 +/- 2.78 0.110 / 0.270 G13 72.6 36.2 8.3 +/- 0.76 12.9 +/- 0.76 0.040 / 0.060 G15 120.4 53.9 10.1 +/- 0.58 12.1 +/- 0.58 0.060 / 0.090 G16 311.1 13.7 8.0 +/- 1.66 20.5 +/- 1.66 0.090 / 0.200 G20 258.0 54.3 10.2 +/- 1.77 12.2 +/- 1.77 0.150 / 0.200 G21 315.2 48.3 8.9 +/- 0.76 11.4 +/- 0.76 0.070 / 0.080 G26 283.3 20.5 11.5 +/- 2.61 25.0 +/- 2.61 0.060 / 0.080 G29 158.2 70.1 9.8 +/- 0.79 10.4 +/- 0.79 0.030 / 0.030