PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/10/26-16:13:10 G02 60.8 31.4 11.7 +/- 1.33 19.9 +/- 1.33 0.020 / 0.030 G05 59.0 62.8 12.5 +/- 1.16 13.9 +/- 1.16 0.030 / 0.030 G12 185.8 32.4 16.7 +/- 1.47 27.9 +/- 1.47 0.060 / 0.050 G13 129.0 15.7 18.8 +/- 2.50 45.9 +/- 2.50 0.040 / 0.050 G15 162.7 13.0 17.2 +/- 1.24 44.8 +/- 1.24 0.070 / 0.100 G20 208.7 60.3 17.1 +/- 1.00 19.4 +/- 1.00 0.060 / 0.120 G21 272.9 20.3 10.7 +/- 2.99 23.4 +/- 2.99 0.080 / 0.260 G25 232.8 50.8 13.5 +/- 1.91 16.9 +/- 1.91 0.080 / 0.330 G29 334.8 61.1 10.4 +/- 0.38 11.7 +/- 0.38 0.040 / 0.060