PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/08-02:42:50 G02 55.0 36.1 6.8 +/- 0.56 10.5 +/- 0.56 0.050 / 0.080 G05 67.9 64.7 7.8 +/- 0.41 8.5 +/- 0.41 0.040 / 0.070 G12 186.1 39.6 11.9 +/- 2.52 17.4 +/- 2.52 0.190 / 0.320 G13 133.4 10.8 2.0 +/- 24.27 5.6 +/- 24.27 0.190 / 0.340 G20 215.5 14.0 14.4 +/- 2.12 36.7 +/- 2.12 0.030 / 0.040 G21 266.0 13.0 11.8 +/- 3.53 30.7 +/- 3.53 0.040 / 0.040 G25 249.3 55.7 9.5 +/- 1.29 11.2 +/- 1.29 0.050 / 0.060 G29 323.7 47.8 8.1 +/- 1.28 10.5 +/- 1.28 0.050 / 0.060