PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/05/10-17:12:50 G01 123.8 13.5 13.2 +/- 1.94 34.1 +/- 1.94 0.150 / 0.140 G07 76.2 64.6 12.9 +/- 0.70 14.1 +/- 0.70 0.090 / 0.140 G08 48.2 36.8 12.0 +/- 1.72 18.5 +/- 1.72 0.030 / 0.030 G09 178.5 34.0 11.8 +/- 1.53 19.1 +/- 1.53 0.030 / 0.030 G11 113.3 37.8 13.0 +/- 0.72 19.6 +/- 0.72 0.030 / 0.040 G13 319.8 15.2 12.3 +/- 4.23 30.6 +/- 4.23 0.030 / 0.030 G17 199.9 17.9 10.1 +/- 2.67 23.3 +/- 2.67 0.100 / 0.230 G18 98.7 18.1 12.3 +/- 1.40 28.4 +/- 1.40 0.140 / 0.160 G28 275.7 51.0 14.5 +/- 3.61 18.0 +/- 3.61 0.110 / 0.470 G30 340.8 65.3 12.8 +/- 0.92 14.0 +/- 0.92 0.120 / 0.250