PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/08-23:57:50 G02 245.7 77.5 10.4 +/- 0.89 10.7 +/- 0.89 0.040 / 0.040 G05 170.4 17.8 17.8 +/- 0.80 41.3 +/- 0.80 0.040 / 0.050 G06 40.5 56.9 10.7 +/- 0.94 12.5 +/- 0.94 0.050 / 0.210 G12 321.6 53.2 11.2 +/- 1.44 13.7 +/- 1.44 0.050 / 0.220 G17 70.1 24.8 10.2 +/- 0.76 20.0 +/- 0.76 0.150 / 0.430 G19 57.1 39.1 9.8 +/- 0.37 14.5 +/- 0.37 0.130 / 0.300 G24 244.1 34.3 13.7 +/- 0.87 22.0 +/- 0.87 0.030 / 0.050 G25 316.8 12.4 7.2 +/- 3.81 19.0 +/- 3.81 0.030 / 0.030