PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/30-01:28:10 G02 60.3 31.9 11.7 +/- 2.42 19.7 +/- 2.42 0.070 / 0.080 G05 56.5 59.5 13.6 +/- 0.58 15.6 +/- 0.58 0.070 / 0.110 G12 184.0 31.4 18.0 +/- 1.97 30.7 +/- 1.97 0.240 / 0.370 G13 127.9 15.5 19.3 +/- 2.11 47.3 +/- 2.11 0.390 / 0.390 G15 163.8 12.4 21.8 +/- 5.57 57.6 +/- 5.57 0.030 / 0.040 G21 271.5 17.1 18.2 +/- 2.60 43.1 +/- 2.60 0.030 / 0.050 G25 236.9 51.6 17.3 +/- 2.46 21.5 +/- 2.46 0.070 / 0.080 G29 327.9 54.1 13.8 +/- 0.78 16.6 +/- 0.78 0.050 / 0.070