PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/12/09-05:42:40 G01 64.1 31.7 6.1 +/- 1.51 10.3 +/- 1.51 0.040 / 0.050 G06 181.6 10.7 -13.1 +/- 28.48 -35.9 +/- 28.48 0.040 / 0.050 G07 140.3 23.7 9.5 +/- 1.23 19.1 +/- 1.23 0.090 / 0.070 G11 49.1 25.2 5.7 +/- 1.83 11.1 +/- 1.83 0.120 / 0.110 G13 266.6 36.8 8.6 +/- 1.62 13.3 +/- 1.62 0.050 / 0.050 G15 298.9 15.3 3.0 +/- 0.92 7.5 +/- 0.92 0.050 / 0.040 G17 250.7 76.7 11.1 +/- 0.35 11.4 +/- 0.35 0.080 / 0.210 G19 228.3 44.9 11.0 +/- 2.09 14.9 +/- 2.09 0.080 / 0.220 G28 25.9 58.7 10.2 +/- 0.87 11.7 +/- 0.87 0.070 / 0.140 G30 141.3 57.7 10.8 +/- 0.46 12.5 +/- 0.46 0.070 / 0.140