PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/10/10-06:12:40 G03 190.6 17.6 5.4 +/- 2.46 12.5 +/- 2.46 0.030 / 0.070 G07 297.2 41.8 5.0 +/- 1.23 7.1 +/- 1.23 0.040 / 0.060 G08 135.3 33.2 6.8 +/- 1.75 11.1 +/- 1.75 0.020 / 0.050 G09 319.1 70.1 3.5 +/- 0.74 3.7 +/- 0.74 0.020 / 0.040 G16 41.9 38.0 3.0 +/- 0.42 4.5 +/- 0.42 0.020 / 0.030 G23 129.1 76.3 3.9 +/- 1.01 4.0 +/- 1.01 0.030 / 0.030 G26 44.2 11.2 2.0 +/- 2.18 5.6 +/- 2.18 0.060 / 0.110 G27 91.1 35.5 5.5 +/- 0.53 8.6 +/- 0.53 0.070 / 0.100 G30 277.5 15.3 5.7 +/- 1.71 14.1 +/- 1.71 0.050 / 0.080