PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/06/04-01:12:40 G02 61.7 30.8 9.2 +/- 0.91 15.9 +/- 0.91 0.080 / 0.120 G05 54.3 57.8 8.8 +/- 0.66 10.2 +/- 0.66 0.070 / 0.120 G12 183.5 29.1 12.2 +/- 2.88 21.8 +/- 2.88 0.110 / 0.260 G13 126.3 16.9 15.3 +/- 1.44 36.5 +/- 1.44 0.090 / 0.250 G15 162.9 13.8 16.6 +/- 1.64 42.5 +/- 1.64 0.080 / 0.350 G21 273.1 18.2 10.6 +/- 1.85 24.4 +/- 1.85 0.080 / 0.310 G25 234.0 50.2 11.4 +/- 1.53 14.3 +/- 1.53 0.030 / 0.040 G29 329.1 56.0 10.5 +/- 0.45 12.4 +/- 0.45 0.040 / 0.040