PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/03/18-23:13:00 G01 85.8 32.7 15.1 +/- 1.46 25.1 +/- 1.46 0.050 / 0.100 G07 128.7 42.7 20.0 +/- 0.53 27.9 +/- 0.53 0.070 / 0.080 G11 67.1 39.9 15.3 +/- 1.10 22.4 +/- 1.10 0.040 / 0.040 G13 290.8 36.6 16.1 +/- 2.32 24.8 +/- 2.32 0.030 / 0.040 G15 312.3 12.0 14.6 +/- 3.55 38.9 +/- 3.55 0.030 / 0.040 G17 218.1 54.1 19.5 +/- 1.00 23.5 +/- 1.00 0.040 / 0.050 G19 216.5 30.3 23.0 +/- 2.63 40.1 +/- 2.63 0.060 / 0.080 G28 357.6 61.3 15.0 +/- 1.10 16.9 +/- 1.10 0.060 / 0.100 G30 117.6 70.0 18.2 +/- 0.73 19.2 +/- 0.73 0.070 / 0.110