PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/25-09:12:40 G01 310.0 30.9 5.7 +/- 1.44 9.7 +/- 1.44 0.040 / 0.050 G10 102.4 42.5 5.2 +/- 0.64 7.3 +/- 0.64 0.040 / 0.060 G11 286.6 27.5 4.8 +/- 1.36 8.8 +/- 1.36 0.070 / 0.130 G14 335.6 68.9 5.9 +/- 0.87 6.3 +/- 0.87 0.070 / 0.110 G18 283.8 48.6 5.1 +/- 1.25 6.6 +/- 1.25 0.070 / 0.130 G22 309.4 26.7 2.7 +/- 1.32 5.0 +/- 1.32 0.080 / 0.140 G25 86.1 15.6 3.0 +/- 1.81 7.4 +/- 1.81 0.030 / 0.050 G31 165.3 63.1 7.7 +/- 1.03 8.6 +/- 1.03 0.040 / 0.070 G32 34.6 53.4 4.2 +/- 0.65 5.1 +/- 0.65 0.080 / 0.170