PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/08/13-09:58:10 G03 192.9 22.4 4.9 +/- 3.80 10.2 +/- 3.80 0.030 / 0.030 G07 292.8 40.1 -6.3 +/- 9.68 -9.2 +/- 9.68 0.030 / 0.020 G08 138.8 29.3 5.5 +/- 1.42 9.7 +/- 1.42 0.150 / 0.350 G09 321.8 66.5 4.0 +/- 0.87 4.3 +/- 0.87 0.070 / 0.100 G16 42.7 40.2 18.6 +/- 14.93 27.0 +/- 14.93 0.080 / 0.130 G23 111.3 80.7 33.2 +/- 19.29 33.6 +/- 19.29 0.020 / 0.040 G26 43.4 13.1 -37.1 +/- 66.77 -96.8 +/- 66.77 0.020 / 0.030 G27 97.3 33.8 -8.1 +/- 12.83 -13.1 +/- 12.83 0.060 / 0.060 G30 273.1 11.2 -11.6 +/- 23.70 -31.5 +/- 23.70 0.050 / 0.080