PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/10/03-04:12:40 G01 222.9 13.7 6.0 +/- 2.06 15.3 +/- 2.06 0.160 / 0.330 G03 278.6 68.1 5.5 +/- 0.43 5.9 +/- 0.43 0.150 / 0.350 G09 297.4 12.0 5.3 +/- 2.81 14.0 +/- 2.81 0.210 / 0.390 G14 91.4 20.0 4.8 +/- 1.06 10.5 +/- 1.06 0.260 / 0.480 G16 147.9 48.0 7.7 +/- 1.64 10.0 +/- 1.64 0.040 / 0.040 G22 208.9 67.3 7.1 +/- 1.36 7.6 +/- 1.36 0.040 / 0.040 G23 309.8 39.1 4.7 +/- 0.92 6.9 +/- 0.92 0.070 / 0.180 G26 95.8 56.2 6.9 +/- 0.95 8.1 +/- 0.95 0.070 / 0.190 G31 45.9 31.4 2.9 +/- 0.95 5.0 +/- 0.95 0.050 / 0.090