PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/12/02-04:12:40 G01 94.5 29.1 8.0 +/- 1.58 14.2 +/- 1.58 0.030 / 0.020 G07 118.9 50.9 5.9 +/- 0.45 7.4 +/- 0.45 0.030 / 0.020 G08 41.6 11.7 2.3 +/- 1.09 6.1 +/- 1.09 0.130 / 0.310 G11 79.8 45.0 4.8 +/- 1.12 6.5 +/- 1.12 0.330 / 0.360 G13 300.2 35.2 3.9 +/- 0.83 6.1 +/- 0.83 0.040 / 0.050 G17 208.9 47.9 5.9 +/- 0.79 7.6 +/- 0.79 0.040 / 0.090 G19 210.8 23.8 6.5 +/- 1.93 13.0 +/- 1.93 0.050 / 0.050 G28 318.6 59.6 2.5 +/- 1.11 2.9 +/- 1.11 0.060 / 0.040 G30 53.3 81.6 4.7 +/- 0.95 4.7 +/- 0.95 0.110 / 0.250