PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/04/06-22:12:50 G01 75.8 33.3 11.5 +/- 0.83 18.9 +/- 0.83 0.040 / 0.030 G07 134.9 35.3 14.5 +/- 2.12 22.9 +/- 2.12 0.030 / 0.040 G11 58.3 35.0 11.9 +/- 1.23 18.9 +/- 1.23 0.080 / 0.120 G13 280.3 37.6 13.7 +/- 1.81 20.7 +/- 1.81 0.090 / 0.080 G15 305.9 14.5 8.3 +/- 2.69 20.8 +/- 2.69 0.240 / 0.300 G17 226.4 60.9 14.2 +/- 1.85 16.0 +/- 1.85 0.380 / 0.250 G18 52.9 20.5 11.4 +/- 7.12 24.9 +/- 7.12 0.090 / 0.090 G19 221.3 37.6 15.8 +/- 1.77 23.9 +/- 1.77 0.100 / 0.110 G28 13.0 60.0 12.8 +/- 0.54 14.6 +/- 0.54 0.030 / 0.050 G30 130.7 63.4 14.9 +/- 0.57 16.4 +/- 0.57 0.030 / 0.040