PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/05/10-02:28:00 G02 72.8 21.6 7.6 +/- 0.65 16.1 +/- 0.65 0.060 / 0.090 G05 45.6 44.6 8.8 +/- 0.41 11.9 +/- 0.41 0.060 / 0.100 G12 182.6 18.5 15.4 +/- 1.70 35.1 +/- 1.70 0.080 / 0.190 G13 113.0 25.4 12.2 +/- 0.98 23.6 +/- 0.98 0.090 / 0.230 G15 153.5 26.4 15.6 +/- 1.08 29.6 +/- 1.08 0.080 / 0.180 G20 226.6 11.5 12.0 +/- 26.47 32.4 +/- 26.47 0.080 / 0.160 G21 285.6 27.9 9.3 +/- 1.50 17.0 +/- 1.50 0.070 / 0.340 G25 218.1 38.7 13.7 +/- 1.10 20.3 +/- 1.10 0.080 / 0.270 G26 318.3 10.7 -8.6 +/- 35.45 -23.7 +/- 35.45 0.030 / 0.040 G29 348.6 73.9 11.8 +/- 0.71 12.2 +/- 0.71 0.030 / 0.060