PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/11/28-07:12:40 G01 71.1 32.9 3.9 +/- 1.08 6.4 +/- 1.08 0.040 / 0.050 G07 137.2 30.5 7.0 +/- 0.74 12.2 +/- 0.74 0.040 / 0.050 G11 54.2 30.6 4.5 +/- 1.73 7.7 +/- 1.73 0.060 / 0.070 G13 276.6 37.0 3.6 +/- 2.52 5.5 +/- 2.52 0.050 / 0.080 G15 302.6 15.6 1.3 +/- 1.31 3.3 +/- 1.31 0.090 / 0.210 G17 234.0 70.3 6.6 +/- 0.46 7.0 +/- 0.46 0.080 / 0.210 G19 224.2 43.2 6.8 +/- 2.79 9.4 +/- 2.79 0.030 / 0.020 G28 20.4 59.0 3.5 +/- 2.65 4.0 +/- 2.65 0.030 / 0.020 G30 134.6 61.1 7.7 +/- 0.39 8.6 +/- 0.39 0.070 / 0.070