PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/10-22:57:40 G02 211.2 54.6 13.4 +/- 0.83 16.1 +/- 0.83 0.060 / 0.130 G06 79.4 78.3 11.5 +/- 0.45 11.8 +/- 0.45 0.070 / 0.110 G12 316.5 30.8 10.8 +/- 1.03 18.6 +/- 1.03 0.050 / 0.060 G17 49.9 39.2 10.8 +/- 0.91 16.0 +/- 0.91 0.050 / 0.060 G19 30.0 54.2 12.2 +/- 0.43 14.6 +/- 0.43 0.120 / 0.380 G24 273.8 42.5 12.3 +/- 0.74 17.2 +/- 0.74 0.110 / 0.370 G28 118.4 18.0 14.1 +/- 1.36 32.6 +/- 1.36 0.060 / 0.080