PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/17-01:12:30 G02 35.3 53.7 12.0 +/- 0.67 14.5 +/- 0.67 0.040 / 0.040 G05 133.1 63.7 14.0 +/- 0.64 15.4 +/- 0.64 0.040 / 0.030 G06 54.8 14.2 8.9 +/- 2.50 22.6 +/- 2.50 0.030 / 0.050 G12 196.4 65.9 12.3 +/- 0.99 13.3 +/- 0.99 0.040 / 0.040 G19 100.8 10.1 12.2 +/- 2.26 34.0 +/- 2.26 0.050 / 0.060 G25 295.5 53.7 12.6 +/- 0.76 15.2 +/- 0.76 0.040 / 0.070 G29 308.0 28.3 8.6 +/- 1.03 15.6 +/- 1.03 0.090 / 0.320