PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/29-01:12:10 G02 53.1 37.9 10.4 +/- 0.56 15.7 +/- 0.56 0.070 / 0.110 G05 72.3 66.1 12.9 +/- 0.33 14.0 +/- 0.33 0.050 / 0.090 G12 185.8 41.0 13.6 +/- 1.80 19.5 +/- 1.80 0.200 / 0.530 G21 264.5 11.6 15.0 +/- 3.61 40.5 +/- 3.61 0.180 / 0.580 G25 252.3 56.5 13.7 +/- 1.45 16.1 +/- 1.45 0.030 / 0.040 G29 322.3 45.9 12.1 +/- 1.20 16.1 +/- 1.20 0.030 / 0.060