PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/28-03:28:00 G05 49.6 14.6 5.1 +/- 2.44 12.7 +/- 2.44 0.130 / 0.260 G10 237.1 13.3 13.9 +/- 3.19 35.9 +/- 3.19 0.120 / 0.260 G13 74.1 36.4 9.1 +/- 0.49 14.2 +/- 0.49 0.040 / 0.070 G15 122.5 53.1 12.4 +/- 0.82 15.1 +/- 0.82 0.050 / 0.060 G16 312.2 13.4 6.8 +/- 2.78 17.5 +/- 2.78 0.110 / 0.290 G20 255.3 51.7 12.5 +/- 0.95 15.5 +/- 0.95 0.090 / 0.210 G21 314.0 47.5 9.2 +/- 1.40 11.9 +/- 1.40 0.250 / 0.460 G25 199.1 10.0 2.6 +/- 38.82 7.4 +/- 38.82 0.190 / 0.370 G26 284.5 20.7 10.5 +/- 1.17 22.7 +/- 1.17 0.070 / 0.130 G29 157.4 71.6 12.3 +/- 1.02 12.9 +/- 1.02 0.070 / 0.120