PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/08/03-20:58:00 G02 79.5 17.8 7.4 +/- 5.55 17.1 +/- 5.55 0.080 / 0.150 G05 44.4 36.8 6.5 +/- 5.23 10.0 +/- 5.23 0.080 / 0.170 G13 102.3 30.6 9.4 +/- 5.20 16.3 +/- 5.20 0.040 / 0.080 G15 148.2 34.6 13.9 +/- 1.13 22.3 +/- 1.13 0.050 / 0.070 G20 231.8 19.3 13.5 +/- 8.06 30.3 +/- 8.06 0.100 / 0.140 G21 293.2 32.3 7.2 +/- 4.58 12.0 +/- 4.58 0.070 / 0.170 G25 212.3 30.5 9.0 +/- 3.59 15.5 +/- 3.59 0.030 / 0.030 G26 309.3 16.5 7.5 +/- 5.42 18.0 +/- 5.42 0.030 / 0.040 G29 359.1 81.3 10.0 +/- 0.60 10.1 +/- 0.60 0.080 / 0.180