PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/03/13-00:43:00 G01 52.1 26.8 5.6 +/- 2.22 10.5 +/- 2.22 0.040 / 0.060 G06 179.1 22.1 11.6 +/- 2.04 24.4 +/- 2.04 0.040 / 0.050 G07 145.6 14.9 10.8 +/- 2.34 27.0 +/- 2.34 0.140 / 0.150 G11 46.1 19.4 5.8 +/- 2.58 12.9 +/- 2.58 0.100 / 0.130 G13 253.6 31.5 7.5 +/- 3.30 12.8 +/- 3.30 0.020 / 0.020 G15 285.2 16.3 8.5 +/- 0.91 20.6 +/- 0.91 0.030 / 0.020 G17 288.8 77.6 9.1 +/- 0.53 9.3 +/- 0.53 0.130 / 0.180 G19 243.4 58.1 8.9 +/- 1.47 10.2 +/- 1.47 0.120 / 0.180 G28 49.9 53.4 8.1 +/- 1.20 9.8 +/- 1.20 0.190 / 0.250 G30 147.8 40.4 11.1 +/- 0.60 16.1 +/- 0.60 0.240 / 0.300