PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/08/27-04:28:00 G01 254.8 37.1 3.0 +/- 1.09 4.6 +/- 1.09 0.040 / 0.050 G03 316.4 38.6 3.4 +/- 1.43 5.0 +/- 1.43 0.040 / 0.040 G11 238.6 13.7 5.2 +/- 1.47 13.3 +/- 1.47 0.050 / 0.080 G14 56.2 43.4 1.6 +/- 0.63 2.3 +/- 0.63 0.060 / 0.110 G18 222.7 29.9 3.9 +/- 1.50 6.9 +/- 1.50 0.040 / 0.080 G22 308.4 61.7 3.7 +/- 1.98 4.1 +/- 1.98 0.040 / 0.090 G25 41.5 11.1 2.3 +/- 2.41 6.3 +/- 2.41 0.200 / 0.400 G26 136.3 36.2 4.5 +/- 1.10 7.1 +/- 1.10 0.200 / 0.440 G31 42.3 59.3 2.7 +/- 0.32 3.1 +/- 0.32 0.130 / 0.260 G32 75.5 23.3 2.0 +/- 1.23 4.1 +/- 1.23 0.120 / 0.360