PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/12/09-08:28:10 G02 275.7 81.7 7.0 +/- 0.60 7.1 +/- 0.60 0.080 / 0.200 G05 171.1 19.4 5.2 +/- 1.32 11.6 +/- 1.32 0.080 / 0.180 G06 39.5 52.7 4.6 +/- 0.67 5.6 +/- 0.67 0.120 / 0.140 G12 321.4 59.7 7.0 +/- 1.21 8.0 +/- 1.21 0.130 / 0.130 G17 75.0 18.3 6.1 +/- 1.28 14.0 +/- 1.28 0.190 / 0.310 G19 63.3 33.2 6.1 +/- 0.75 10.1 +/- 0.75 0.120 / 0.220 G24 241.2 31.5 8.0 +/- 1.25 13.7 +/- 1.25 0.040 / 0.040 G25 316.9 16.9 3.6 +/- 4.87 8.6 +/- 4.87 0.040 / 0.030