PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/02/05-01:12:40 G01 111.7 23.0 6.4 +/- 1.94 13.2 +/- 1.94 0.050 / 0.050 G07 98.4 61.8 6.4 +/- 0.91 7.1 +/- 0.91 0.040 / 0.050 G08 42.9 25.9 3.9 +/- 2.63 7.5 +/- 2.63 0.090 / 0.140 G09 176.5 18.9 8.7 +/- 1.75 19.6 +/- 1.75 0.130 / 0.130 G11 98.8 42.4 6.2 +/- 0.79 8.7 +/- 0.79 0.030 / 0.030 G13 313.6 24.7 3.4 +/- 1.37 6.7 +/- 1.37 0.030 / 0.040 G17 204.5 32.1 6.3 +/- 1.68 10.6 +/- 1.68 0.080 / 0.120 G28 309.8 60.2 5.0 +/- 1.00 5.6 +/- 1.00 0.140 / 0.110 G30 23.2 76.4 5.3 +/- 0.78 5.5 +/- 0.78 0.230 / 0.120