PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/07/24-01:12:40 G10 250.4 25.6 11.7 +/- 1.96 22.5 +/- 1.96 0.060 / 0.140 G13 54.6 31.3 10.6 +/- 0.66 18.0 +/- 0.66 0.070 / 0.160 G15 91.6 58.7 12.1 +/- 0.90 13.9 +/- 0.90 0.030 / 0.060 G16 297.2 14.7 8.8 +/- 3.73 22.1 +/- 3.73 0.030 / 0.060 G18 267.5 54.5 13.6 +/- 1.41 16.3 +/- 1.41 0.110 / 0.390 G20 43.7 47.2 9.2 +/- 0.66 12.0 +/- 0.66 0.110 / 0.400 G21 332.8 60.0 11.2 +/- 1.22 12.7 +/- 1.22 0.060 / 0.070 G26 269.4 15.6 12.4 +/- 1.69 30.3 +/- 1.69 0.040 / 0.070 G29 164.3 48.1 11.6 +/- 1.44 15.0 +/- 1.44 0.040 / 0.050