PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/02/08-01:13:00 G01 106.2 26.0 6.1 +/- 1.15 11.7 +/- 1.15 0.060 / 0.090 G07 107.9 57.8 7.7 +/- 0.39 9.0 +/- 0.39 0.060 / 0.080 G08 42.1 21.3 3.8 +/- 1.78 8.2 +/- 1.78 0.040 / 0.040 G09 175.4 13.8 10.1 +/- 1.73 25.8 +/- 1.73 0.050 / 0.060 G11 91.1 43.3 6.4 +/- 0.33 8.8 +/- 0.33 0.050 / 0.140 G13 309.6 28.4 4.0 +/- 0.97 7.3 +/- 0.97 0.060 / 0.110 G17 206.6 37.7 9.5 +/- 1.26 14.4 +/- 1.26 0.030 / 0.040 G19 209.3 14.2 5.1 +/- 2.20 13.0 +/- 2.20 0.030 / 0.050 G28 321.0 61.3 6.4 +/- 0.42 7.2 +/- 0.42 0.030 / 0.070 G30 50.4 78.0 6.7 +/- 0.35 6.8 +/- 0.35 0.030 / 0.060