PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/08/25-14:42:30 G02 202.5 24.2 9.2 +/- 1.81 18.3 +/- 1.81 0.080 / 0.110 G06 162.8 62.9 10.3 +/- 0.79 11.4 +/- 0.79 0.070 / 0.080 G12 304.9 14.2 7.4 +/- 2.38 18.8 +/- 2.38 0.100 / 0.200 G17 30.9 53.3 8.4 +/- 0.76 10.2 +/- 0.76 0.080 / 0.350 G19 331.0 69.4 8.3 +/- 0.51 8.8 +/- 0.51 0.040 / 0.030 G24 303.8 35.4 8.5 +/- 1.93 13.3 +/- 1.93 0.040 / 0.030 G28 94.8 36.1 8.5 +/- 1.59 13.2 +/- 1.59 0.040 / 0.030