PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/11-02:42:50 G02 59.3 32.5 6.6 +/- 2.25 11.1 +/- 2.25 0.080 / 0.090 G05 58.6 60.6 8.6 +/- 0.50 9.7 +/- 0.50 0.090 / 0.100 G12 184.9 33.6 10.8 +/- 0.86 17.5 +/- 0.86 0.030 / 0.030 G13 129.3 14.4 10.6 +/- 3.16 26.8 +/- 3.16 0.030 / 0.030 G15 164.3 11.3 4.1 +/- 15.53 11.2 +/- 15.53 0.120 / 0.360 G20 217.6 17.3 11.3 +/- 2.51 26.7 +/- 2.51 0.150 / 0.320 G21 270.2 16.3 9.2 +/- 2.74 22.3 +/- 2.74 0.090 / 0.070 G25 239.8 52.7 11.2 +/- 2.66 13.7 +/- 2.66 0.110 / 0.090 G29 327.1 52.8 10.3 +/- 1.56 12.6 +/- 1.56 0.130 / 0.260