PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/11/22-06:58:10 G01 60.9 30.8 4.6 +/- 0.73 7.9 +/- 0.73 0.040 / 0.040 G06 180.5 13.8 5.4 +/- 3.75 13.8 +/- 3.75 0.040 / 0.030 G07 141.7 21.3 7.6 +/- 1.52 16.1 +/- 1.52 0.070 / 0.110 G11 47.8 23.0 3.0 +/- 0.87 6.1 +/- 0.87 0.090 / 0.130 G13 262.9 35.9 2.2 +/- 1.46 3.4 +/- 1.46 0.060 / 0.140 G15 296.7 15.3 3.4 +/- 2.96 8.4 +/- 2.96 0.050 / 0.120 G17 262.9 78.5 7.0 +/- 0.82 7.2 +/- 0.82 0.040 / 0.020 G19 231.0 47.1 8.9 +/- 1.24 11.7 +/- 1.24 0.030 / 0.030 G28 31.4 57.8 4.4 +/- 0.54 5.1 +/- 0.54 0.030 / 0.060 G30 143.6 54.8 8.5 +/- 1.83 10.1 +/- 1.83 0.030 / 0.050