PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/08/26-21:13:10 G10 257.6 33.6 10.7 +/- 1.59 17.5 +/- 1.59 0.060 / 0.060 G13 46.9 24.0 7.7 +/- 1.00 15.4 +/- 1.00 0.050 / 0.060 G15 72.8 55.4 9.5 +/- 0.44 11.3 +/- 0.44 0.140 / 0.370 G20 281.9 55.8 11.2 +/- 0.65 13.3 +/- 0.65 0.060 / 0.220 G21 343.4 64.7 7.7 +/- 1.15 8.4 +/- 1.15 0.060 / 0.210 G26 261.2 12.3 11.5 +/- 1.62 30.5 +/- 1.62 0.040 / 0.040 G27 322.1 10.7 -13.1 +/- 27.43 -36.1 +/- 27.43 0.040 / 0.060 G29 165.5 41.8 11.9 +/- 1.40 16.8 +/- 1.40 0.080 / 0.080