PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/09/05-21:28:00 G05 47.9 22.2 15.3 +/- 2.26 32.0 +/- 2.26 0.140 / 0.000 G10 235.8 10.9 -5.2 +/- 56.94 -14.1 +/- 56.94 0.150 / 0.260 G13 78.7 37.6 20.4 +/- 0.70 31.0 +/- 0.70 0.100 / 0.200 G15 126.5 51.5 21.9 +/- 0.43 27.2 +/- 0.43 0.090 / 0.200 G16 317.2 10.4 -3.6 +/- 16.40 -10.0 +/- 16.40 0.060 / 0.060 G18 244.7 41.3 23.5 +/- 1.47 33.4 +/- 1.47 0.050 / 0.070 G20 28.0 66.5 19.3 +/- 0.38 20.9 +/- 0.38 0.090 / 0.170 G21 312.8 47.3 19.8 +/- 0.70 25.9 +/- 0.70 0.290 / 0.180 G26 291.3 19.5 18.9 +/- 1.00 42.1 +/- 1.00 0.040 / 0.040 G29 153.2 69.3 20.0 +/- 0.47 21.2 +/- 0.47 0.040 / 0.040