PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/06/09-20:12:30 G02 217.4 61.4 12.3 +/- 0.48 13.8 +/- 0.48 0.140 / 0.100 G06 56.0 74.3 9.9 +/- 0.79 10.3 +/- 0.79 0.140 / 0.090 G12 317.9 34.9 7.8 +/- 1.78 12.4 +/- 1.78 0.120 / 0.370 G17 57.4 32.3 9.1 +/- 0.91 15.1 +/- 0.91 0.080 / 0.400 G19 41.4 47.5 9.7 +/- 0.94 12.6 +/- 0.94 0.040 / 0.060 G24 263.3 41.1 10.5 +/- 1.36 15.0 +/- 1.36 0.050 / 0.050 G28 121.9 17.4 11.7 +/- 2.08 27.5 +/- 2.08 0.040 / 0.090