PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/02/08-05:12:30 G02 210.2 55.3 7.2 +/- 0.84 8.5 +/- 0.84 0.030 / 0.070 G06 100.5 80.8 7.8 +/- 0.54 7.9 +/- 0.54 0.030 / 0.070 G12 315.8 28.4 4.0 +/- 1.01 7.2 +/- 1.01 0.120 / 0.420 G17 51.1 37.7 3.5 +/- 0.84 5.3 +/- 0.84 0.100 / 0.420 G19 31.7 53.3 5.3 +/- 0.43 6.4 +/- 0.43 0.070 / 0.130 G24 276.2 42.1 5.1 +/- 1.79 7.2 +/- 1.79 0.080 / 0.110 G28 118.1 18.1 6.2 +/- 0.96 14.4 +/- 0.96 0.070 / 0.080