PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/07/29-10:57:30 G03 193.3 23.4 3.7 +/- 2.61 7.5 +/- 2.61 0.040 / 0.100 G07 292.0 39.8 -8.0 +/- 7.50 -11.7 +/- 7.50 0.040 / 0.080 G08 139.6 28.4 -1.3 +/- 5.73 -2.3 +/- 5.73 0.080 / 0.370 G09 321.7 64.6 6.7 +/- 2.61 7.4 +/- 2.61 0.100 / 0.510 G16 42.9 40.7 2.5 +/- 0.35 3.6 +/- 0.35 0.050 / 0.070 G23 106.1 81.3 47.4 +/- 19.66 47.9 +/- 19.66 0.050 / 0.080 G26 43.3 13.5 -50.0 +/- 59.65 -129.0 +/- 59.65 0.050 / 0.060 G27 98.6 33.4 -9.5 +/- 10.52 -15.5 +/- 10.52 0.050 / 0.080 G30 272.2 10.4 -15.3 +/- 19.00 -42.3 +/- 19.00 0.030 / 0.030