PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/11/21-07:12:50 G01 37.2 9.9 2.1 +/- 5.47 5.8 +/- 5.47 0.110 / 0.160 G02 198.9 14.7 3.5 +/- 6.96 8.8 +/- 6.96 0.140 / 0.230 G06 171.8 46.0 8.7 +/- 0.95 11.5 +/- 0.95 0.040 / 0.070 G13 231.1 18.5 4.8 +/- 2.87 10.9 +/- 2.87 0.050 / 0.080 G17 13.1 65.6 6.2 +/- 0.50 6.7 +/- 0.50 0.030 / 0.030 G19 303.1 72.5 6.8 +/- 0.72 7.1 +/- 0.72 0.030 / 0.030 G24 314.4 22.7 4.9 +/- 1.83 10.0 +/- 1.83 0.200 / 0.320 G28 71.2 50.3 6.9 +/- 1.00 8.7 +/- 1.00 0.290 / 0.390 G30 157.2 24.9 7.7 +/- 3.11 15.1 +/- 3.11 0.040 / 0.030