PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/08/16-22:43:00 G10 252.9 28.7 11.2 +/- 2.57 20.1 +/- 2.57 0.040 / 0.050 G13 51.1 28.2 7.5 +/- 1.37 13.6 +/- 1.37 0.050 / 0.030 G15 86.7 58.9 9.3 +/- 0.58 10.7 +/- 0.58 0.030 / 0.040 G16 291.4 15.8 7.8 +/- 1.87 19.1 +/- 1.87 0.040 / 0.050 G20 256.7 22.6 5.7 +/- 3.28 11.9 +/- 3.28 0.130 / 0.160 G21 335.5 61.3 8.8 +/- 0.50 9.9 +/- 0.50 0.160 / 0.250 G26 263.7 14.6 11.1 +/- 2.15 27.8 +/- 2.15 0.030 / 0.040 G29 165.9 48.2 9.7 +/- 0.89 12.6 +/- 0.89 0.030 / 0.040