PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/06/20-06:12:50 G01 314.3 27.3 3.6 +/- 1.51 6.8 +/- 1.51 0.080 / 0.140 G10 94.7 45.5 4.0 +/- 0.87 5.4 +/- 0.87 0.070 / 0.140 G11 292.7 26.5 4.4 +/- 1.51 8.2 +/- 1.51 0.090 / 0.180 G14 329.5 70.8 3.9 +/- 1.00 4.1 +/- 1.00 0.130 / 0.190 G18 291.7 47.7 4.2 +/- 0.88 5.4 +/- 0.88 0.030 / 0.050 G20 113.7 21.7 4.8 +/- 1.26 10.2 +/- 1.26 0.040 / 0.050 G22 306.3 18.9 5.0 +/- 1.04 11.3 +/- 1.04 0.040 / 0.050 G25 92.7 12.6 3.5 +/- 1.33 9.2 +/- 1.33 0.040 / 0.050 G31 171.3 54.2 6.2 +/- 1.03 7.5 +/- 1.03 0.160 / 0.360 G32 20.2 61.7 3.9 +/- 0.36 4.3 +/- 0.36 0.160 / 0.350