PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/28-04:43:00 G10 265.2 37.0 10.1 +/- 1.52 15.5 +/- 1.52 0.160 / 0.350 G13 42.8 19.7 6.0 +/- 2.96 13.2 +/- 2.96 0.200 / 0.390 G15 61.3 50.3 7.4 +/- 0.89 9.3 +/- 0.89 0.040 / 0.030 G16 279.7 12.6 10.1 +/- 2.23 26.5 +/- 2.23 0.040 / 0.030 G20 324.5 67.8 7.7 +/- 0.47 8.3 +/- 0.47 0.260 / 0.310 G21 357.4 70.6 7.8 +/- 0.60 8.2 +/- 0.60 0.140 / 0.130 G24 121.3 13.3 7.4 +/- 1.90 19.2 +/- 1.90 0.170 / 0.300 G27 319.2 17.8 7.8 +/- 2.78 18.0 +/- 2.78 0.180 / 0.270 G29 168.1 33.6 8.9 +/- 1.35 14.5 +/- 1.35 0.210 / 0.270