PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/07/05-19:27:50 G02 218.5 61.5 15.1 +/- 1.27 17.0 +/- 1.27 0.060 / 0.060 G06 51.4 70.6 14.1 +/- 0.37 14.9 +/- 0.37 0.040 / 0.050 G12 320.1 41.0 13.9 +/- 0.58 19.9 +/- 0.58 0.030 / 0.020 G17 59.1 31.3 11.2 +/- 0.74 19.0 +/- 0.74 0.030 / 0.020 G19 39.3 49.6 13.0 +/- 1.34 16.5 +/- 1.34 0.040 / 0.050 G24 260.7 41.1 16.1 +/- 4.53 23.1 +/- 4.53 0.030 / 0.050 G28 124.3 11.8 15.1 +/- 2.59 40.5 +/- 2.59 0.030 / 0.060