PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/12/11-09:28:00 G02 284.2 80.9 5.4 +/- 0.47 5.5 +/- 0.47 0.040 / 0.040 G05 169.6 23.3 8.2 +/- 1.28 16.7 +/- 1.28 0.040 / 0.050 G06 39.4 50.7 3.8 +/- 0.50 4.7 +/- 0.50 0.030 / 0.040 G12 319.8 60.9 5.0 +/- 0.69 5.6 +/- 0.69 0.040 / 0.040 G17 79.5 14.6 4.3 +/- 1.22 10.8 +/- 1.22 0.070 / 0.170 G19 64.5 34.8 5.0 +/- 0.76 7.9 +/- 0.76 0.080 / 0.190 G24 231.2 28.1 7.4 +/- 1.58 13.4 +/- 1.58 0.070 / 0.170 G25 317.3 26.2 1.8 +/- 1.19 3.4 +/- 1.19 0.080 / 0.160