PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/12/09-03:58:00 G01 117.5 18.9 10.5 +/- 3.03 23.7 +/- 3.03 0.030 / 0.040 G07 88.3 63.8 9.2 +/- 0.80 10.1 +/- 0.80 0.030 / 0.030 G08 43.5 27.4 4.5 +/- 1.87 8.4 +/- 1.87 0.030 / 0.040 G09 175.0 22.2 9.4 +/- 1.84 19.5 +/- 1.84 0.030 / 0.040 G11 102.0 40.8 9.7 +/- 0.65 14.0 +/- 0.65 0.060 / 0.100 G13 316.6 21.3 3.8 +/- 2.14 8.1 +/- 2.14 0.090 / 0.100 G17 200.9 28.9 9.2 +/- 2.32 16.4 +/- 2.32 0.110 / 0.360 G28 292.6 56.8 8.7 +/- 0.88 10.2 +/- 0.88 0.080 / 0.310 G30 346.3 69.2 6.7 +/- 0.67 7.1 +/- 0.67 0.050 / 0.060