PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/06/08-17:28:00 G01 91.1 31.7 11.1 +/- 0.91 18.8 +/- 0.91 0.030 / 0.060 G07 124.8 46.5 12.0 +/- 0.79 15.8 +/- 0.79 0.030 / 0.050 G11 69.9 40.3 10.7 +/- 0.95 15.5 +/- 0.95 0.030 / 0.020 G13 295.4 35.8 10.8 +/- 2.70 16.9 +/- 2.70 0.030 / 0.020 G17 214.4 50.8 11.4 +/- 0.44 14.2 +/- 0.44 0.080 / 0.090 G18 64.7 24.1 10.2 +/- 1.69 20.3 +/- 1.69 0.100 / 0.100 G19 214.5 24.5 11.9 +/- 1.77 23.5 +/- 1.77 0.100 / 0.170 G28 347.8 61.8 9.5 +/- 0.75 10.7 +/- 0.75 0.060 / 0.120 G30 101.8 76.4 10.5 +/- 0.60 10.8 +/- 0.60 0.160 / 0.160