PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/10/23-17:12:50 G05 47.9 21.2 6.6 +/- 0.61 14.0 +/- 0.61 0.220 / 0.430 G10 235.6 12.2 11.4 +/- 3.98 30.4 +/- 3.98 0.210 / 0.420 G13 76.5 36.1 9.8 +/- 0.81 15.3 +/- 0.81 0.070 / 0.080 G15 131.2 51.2 12.3 +/- 1.36 15.3 +/- 1.36 0.040 / 0.070 G16 314.8 12.1 7.3 +/- 2.50 19.5 +/- 2.50 0.120 / 0.340 G20 247.4 36.3 10.5 +/- 1.60 16.2 +/- 1.60 0.120 / 0.380 G21 313.4 47.2 7.8 +/- 1.29 10.2 +/- 1.29 0.090 / 0.140 G25 196.9 9.9 12.2 +/- 16.77 34.2 +/- 16.77 0.090 / 0.130 G26 289.0 20.1 9.5 +/- 1.53 20.8 +/- 1.53 0.080 / 0.140 G29 153.8 73.3 13.2 +/- 2.07 13.8 +/- 2.07 0.080 / 0.170