PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/03/27-16:12:50 G03 204.4 54.1 13.0 +/- 0.88 15.7 +/- 0.88 0.130 / 0.310 G07 260.4 21.4 10.8 +/- 4.00 23.1 +/- 4.00 0.120 / 0.350 G09 311.0 29.0 8.1 +/- 1.91 14.5 +/- 1.91 0.230 / 0.340 G16 102.2 66.0 10.5 +/- 0.92 11.4 +/- 0.92 0.240 / 0.460 G22 184.7 36.4 11.9 +/- 1.18 18.5 +/- 1.18 0.050 / 0.060 G23 331.3 61.1 9.7 +/- 0.66 10.9 +/- 0.66 0.040 / 0.040 G26 54.2 44.9 9.0 +/- 1.24 12.2 +/- 1.24 0.070 / 0.090 G27 134.5 11.2 10.5 +/- 3.62 28.4 +/- 3.62 0.080 / 0.110 G31 60.2 10.1 8.7 +/- 2.40 24.1 +/- 2.40 0.080 / 0.100