PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/02/25-20:13:10 G03 191.5 26.8 11.6 +/- 1.46 21.8 +/- 1.46 0.030 / 0.060 G07 282.0 32.3 10.0 +/- 1.90 16.7 +/- 1.90 0.030 / 0.070 G08 149.5 20.1 13.9 +/- 2.16 30.4 +/- 2.16 0.120 / 0.220 G09 320.1 53.2 12.1 +/- 1.36 14.7 +/- 1.36 0.130 / 0.200 G16 46.3 47.2 10.0 +/- 0.64 13.1 +/- 0.64 0.080 / 0.410 G22 178.6 12.5 10.4 +/- 3.18 27.5 +/- 3.18 0.090 / 0.340 G23 67.9 82.4 9.1 +/- 0.98 9.2 +/- 0.98 0.050 / 0.100 G26 42.9 18.0 8.7 +/- 0.81 20.1 +/- 0.81 0.060 / 0.100 G27 108.0 29.8 12.2 +/- 0.80 21.5 +/- 0.80 0.020 / 0.030 G30 268.7 10.8 -6.1 +/- 36.27 -16.8 +/- 36.27 0.030 / 0.030