PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/12/03-07:57:40 G02 212.8 59.1 7.0 +/- 0.76 8.1 +/- 0.76 0.100 / 0.080 G06 68.3 76.6 6.7 +/- 0.31 6.8 +/- 0.31 0.080 / 0.080 G12 317.5 35.3 4.7 +/- 2.59 7.4 +/- 2.59 0.090 / 0.180 G17 54.4 33.8 4.9 +/- 1.41 8.0 +/- 1.41 0.090 / 0.200 G19 37.3 49.7 5.3 +/- 1.38 6.8 +/- 1.38 0.040 / 0.090 G24 271.6 41.4 7.0 +/- 3.14 9.9 +/- 3.14 0.070 / 0.090 G28 117.4 24.1 6.6 +/- 1.93 13.2 +/- 1.93 0.040 / 0.050