PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/11/21-21:42:50 G01 312.0 28.8 10.0 +/- 0.95 18.0 +/- 0.95 0.090 / 0.190 G10 98.6 45.2 11.6 +/- 0.62 15.5 +/- 0.62 0.090 / 0.220 G11 289.1 27.9 8.1 +/- 1.32 14.9 +/- 1.32 0.110 / 0.090 G14 342.7 69.4 10.7 +/- 0.66 11.4 +/- 0.66 0.110 / 0.100 G18 113.2 18.0 13.9 +/- 1.26 32.0 +/- 1.26 0.030 / 0.040 G22 306.9 19.9 9.0 +/- 1.94 19.9 +/- 1.94 0.030 / 0.030 G25 87.6 14.4 12.2 +/- 2.16 30.7 +/- 2.16 0.120 / 0.270 G31 175.3 55.3 14.0 +/- 0.76 16.6 +/- 0.76 0.100 / 0.200 G32 26.3 58.4 10.5 +/- 0.91 12.1 +/- 0.91 0.040 / 0.020