PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/10/16-16:58:00 G05 50.2 15.1 6.8 +/- 1.73 16.8 +/- 1.73 0.110 / 0.170 G10 239.9 18.7 12.4 +/- 1.06 28.1 +/- 1.06 0.080 / 0.250 G13 67.2 34.2 8.7 +/- 1.08 14.0 +/- 1.08 0.110 / 0.430 G15 111.8 55.6 11.1 +/- 0.72 13.1 +/- 0.72 0.120 / 0.430 G16 308.1 14.6 6.8 +/- 2.76 17.0 +/- 2.76 0.060 / 0.070 G20 255.1 43.2 11.3 +/- 2.48 15.6 +/- 2.48 0.050 / 0.070 G21 319.1 50.4 9.7 +/- 0.56 12.2 +/- 0.56 0.030 / 0.030 G26 281.5 19.4 8.3 +/- 1.46 18.5 +/- 1.46 0.030 / 0.030 G29 157.9 66.7 11.2 +/- 0.46 12.0 +/- 0.46 0.060 / 0.120