PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/10/10-19:43:00 G10 248.0 23.6 11.9 +/- 1.31 24.0 +/- 1.31 0.070 / 0.180 G13 57.8 32.9 11.5 +/- 0.79 19.0 +/- 0.79 0.060 / 0.190 G15 92.3 57.5 13.1 +/- 0.58 15.2 +/- 0.58 0.130 / 0.350 G16 303.2 13.5 10.1 +/- 2.28 26.0 +/- 2.28 0.120 / 0.390 G18 265.1 54.6 14.0 +/- 0.64 16.7 +/- 0.64 0.030 / 0.060 G20 40.2 51.6 11.1 +/- 0.77 13.8 +/- 0.77 0.040 / 0.050 G21 332.6 59.7 13.1 +/- 1.26 14.9 +/- 1.26 0.120 / 0.430 G26 275.6 16.1 11.7 +/- 2.31 28.2 +/- 2.31 0.140 / 0.350 G29 161.4 48.1 15.0 +/- 0.81 19.3 +/- 0.81 0.040 / 0.060