PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/04/10-16:28:00 G03 188.3 20.8 10.6 +/- 1.38 23.0 +/- 1.38 0.270 / 0.180 G07 291.4 41.0 10.8 +/- 2.66 15.5 +/- 2.66 0.320 / 0.280 G08 142.4 25.9 11.8 +/- 1.93 22.5 +/- 1.93 0.120 / 0.120 G09 320.5 58.8 9.6 +/- 0.76 11.1 +/- 0.76 0.050 / 0.150 G16 45.0 45.4 8.7 +/- 0.72 11.7 +/- 0.72 0.430 / 0.320 G23 98.6 81.8 7.9 +/- 0.52 7.9 +/- 0.52 0.250 / 0.420 G26 43.6 16.4 8.1 +/- 2.54 19.5 +/- 2.54 0.030 / 0.030 G27 105.1 32.3 10.4 +/- 0.75 17.5 +/- 0.75 0.040 / 0.030 G30 272.2 12.1 9.9 +/- 6.89 26.4 +/- 6.89 0.060 / 0.110