PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/29-01:28:00 G02 58.5 33.4 10.2 +/- 1.45 16.6 +/- 1.45 0.060 / 0.080 G05 59.6 61.4 11.5 +/- 0.54 13.0 +/- 0.54 0.050 / 0.070 G12 184.5 33.8 13.2 +/- 0.91 21.5 +/- 0.91 0.140 / 0.390 G13 129.6 14.0 13.6 +/- 1.81 34.7 +/- 1.81 0.170 / 0.380 G15 165.0 10.6 -0.7 +/- 25.70 -1.8 +/- 25.70 0.030 / 0.030 G21 269.7 15.7 15.4 +/- 1.60 37.6 +/- 1.60 0.040 / 0.030 G25 240.4 53.1 13.6 +/- 3.95 16.5 +/- 3.95 0.240 / 0.340 G29 326.5 52.0 13.8 +/- 1.04 17.0 +/- 1.04 0.220 / 0.310