PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/09/26-10:12:40 G01 82.5 33.0 5.7 +/- 0.31 9.5 +/- 0.31 0.030 / 0.050 G07 131.0 39.0 7.5 +/- 0.84 11.1 +/- 0.84 0.040 / 0.070 G11 60.5 35.8 3.0 +/- 0.78 4.6 +/- 0.78 0.070 / 0.100 G13 286.4 37.8 4.0 +/- 1.49 6.1 +/- 1.49 0.080 / 0.120 G17 219.8 61.9 7.4 +/- 0.63 8.3 +/- 0.63 0.040 / 0.080 G18 56.0 21.3 2.0 +/- 0.82 4.2 +/- 0.82 0.050 / 0.070 G19 218.0 28.8 5.5 +/- 0.85 9.9 +/- 0.85 0.060 / 0.120 G28 359.5 61.3 4.4 +/- 0.37 4.9 +/- 0.37 0.060 / 0.110 G30 120.3 72.7 7.0 +/- 1.14 7.3 +/- 1.14 0.080 / 0.220