PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/26-01:57:50 G02 64.8 28.2 8.3 +/- 0.79 15.1 +/- 0.79 0.060 / 0.130 G05 50.9 54.4 9.3 +/- 0.47 11.2 +/- 0.47 0.060 / 0.130 G12 183.1 25.7 13.2 +/- 2.18 25.4 +/- 2.18 0.100 / 0.340 G13 123.4 19.3 15.0 +/- 1.58 33.5 +/- 1.58 0.110 / 0.400 G15 160.7 16.9 16.4 +/- 3.19 38.9 +/- 3.19 0.040 / 0.040 G20 221.3 16.0 14.4 +/- 3.22 34.9 +/- 3.22 0.030 / 0.050 G21 276.0 20.5 9.4 +/- 1.84 20.4 +/- 1.84 0.060 / 0.120 G25 229.6 47.4 12.9 +/- 0.96 16.8 +/- 0.96 0.060 / 0.130 G29 331.5 59.6 11.2 +/- 0.84 12.7 +/- 0.84 0.090 / 0.350