PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/03/04-05:12:30 G02 33.5 54.8 5.0 +/- 0.95 6.0 +/- 0.95 0.030 / 0.030 G05 138.5 61.9 6.7 +/- 0.53 7.5 +/- 0.53 0.020 / 0.020 G06 51.5 21.2 14.4 +/- 1.66 30.8 +/- 1.66 0.080 / 0.050 G12 205.6 70.3 5.7 +/- 0.50 6.0 +/- 0.50 0.040 / 0.050 G19 99.2 10.3 5.8 +/- 3.87 16.1 +/- 3.87 0.190 / 0.290 G25 295.1 55.2 5.1 +/- 3.67 6.1 +/- 3.67 0.200 / 0.310 G29 309.3 31.9 3.3 +/- 1.24 5.5 +/- 1.24 0.250 / 0.150