PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/11/12-06:58:00 G01 112.7 22.3 6.2 +/- 1.43 13.0 +/- 1.43 0.040 / 0.040 G07 97.4 61.4 6.3 +/- 0.79 7.1 +/- 0.79 0.040 / 0.050 G08 42.7 24.4 3.2 +/- 2.14 6.4 +/- 2.14 0.030 / 0.030 G09 175.8 19.0 5.0 +/- 2.37 11.4 +/- 2.37 0.020 / 0.030 G11 96.9 41.2 7.2 +/- 1.15 10.3 +/- 1.15 0.100 / 0.150 G13 314.7 23.3 2.4 +/- 1.17 5.0 +/- 1.17 0.060 / 0.080 G17 203.3 33.5 5.6 +/- 1.23 9.1 +/- 1.23 0.080 / 0.090 G28 307.5 59.9 3.8 +/- 0.91 4.3 +/- 0.91 0.070 / 0.090 G30 4.0 74.2 5.3 +/- 0.57 5.5 +/- 0.57 0.110 / 0.170