PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/10/28-19:43:10 G10 282.0 45.4 12.1 +/- 1.18 16.2 +/- 1.18 0.080 / 0.130 G15 49.1 37.1 11.9 +/- 0.72 18.2 +/- 0.72 0.090 / 0.100 G18 334.6 67.1 12.5 +/- 0.68 13.5 +/- 0.68 0.040 / 0.050 G20 63.4 26.0 12.3 +/- 1.12 23.6 +/- 1.12 0.040 / 0.040 G21 63.6 76.0 12.8 +/- 0.75 13.2 +/- 0.75 0.080 / 0.170 G24 109.9 21.5 15.5 +/- 1.53 33.0 +/- 1.53 0.080 / 0.190 G27 309.3 29.5 12.7 +/- 1.34 22.5 +/- 1.34 0.110 / 0.160 G29 166.0 12.4 13.0 +/- 3.29 34.3 +/- 3.29 0.120 / 0.160 G32 207.7 19.3 14.1 +/- 2.23 31.6 +/- 2.23 0.090 / 0.340