PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/05/10-01:42:40 G02 56.8 34.4 10.2 +/- 1.89 16.4 +/- 1.89 0.050 / 0.080 G05 62.6 62.9 10.9 +/- 0.51 12.1 +/- 0.51 0.060 / 0.070 G12 187.1 38.9 14.5 +/- 1.31 21.5 +/- 1.31 0.180 / 0.410 G13 129.9 12.5 15.1 +/- 2.64 39.9 +/- 2.64 0.140 / 0.570 G15 164.8 10.2 -7.4 +/- 20.19 -20.5 +/- 20.19 0.060 / 0.070 G21 269.0 15.8 10.5 +/- 1.48 25.7 +/- 1.48 0.040 / 0.080 G25 241.9 54.4 10.7 +/- 2.46 12.8 +/- 2.46 0.030 / 0.030 G29 329.1 54.2 12.3 +/- 0.83 14.7 +/- 0.83 0.030 / 0.040