PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/07/16-02:12:30 G10 293.0 50.3 9.5 +/- 2.86 11.9 +/- 2.86 0.050 / 0.090 G15 47.1 33.0 7.7 +/- 1.22 12.6 +/- 1.22 0.070 / 0.090 G20 313.4 59.6 12.7 +/- 0.56 14.5 +/- 0.56 0.040 / 0.030 G21 82.7 76.4 9.7 +/- 0.46 10.0 +/- 0.46 0.050 / 0.030 G24 99.5 25.2 11.8 +/- 1.12 22.9 +/- 1.12 0.070 / 0.130 G27 303.6 32.8 8.3 +/- 1.78 13.8 +/- 1.78 0.080 / 0.110 G29 168.7 11.2 13.3 +/- 2.00 36.2 +/- 2.00 0.090 / 0.110 G32 209.0 30.8 13.2 +/- 1.48 22.7 +/- 1.48 0.060 / 0.070