PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/09/25-15:57:40 G02 23.1 62.3 7.7 +/- 0.72 8.5 +/- 0.72 0.040 / 0.050 G05 152.5 56.0 8.7 +/- 0.42 10.2 +/- 0.42 0.040 / 0.060 G06 51.3 18.8 5.7 +/- 2.33 12.9 +/- 2.33 0.030 / 0.020 G12 199.3 71.7 6.8 +/- 0.55 7.2 +/- 0.55 0.020 / 0.030 G19 94.3 16.4 7.1 +/- 2.04 17.0 +/- 2.04 0.030 / 0.040 G25 301.5 52.2 6.9 +/- 2.49 8.4 +/- 2.49 0.030 / 0.040 G29 303.4 23.7 6.0 +/- 1.50 12.1 +/- 1.50 0.190 / 0.140