PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/07/10-15:58:10 G01 42.6 18.5 6.0 +/- 3.69 13.7 +/- 3.69 0.040 / 0.070 G06 175.2 34.5 7.0 +/- 1.51 11.3 +/- 1.51 0.030 / 0.070 G13 240.0 25.2 6.0 +/- 2.11 11.8 +/- 2.11 0.170 / 0.270 G15 274.3 13.5 5.7 +/- 1.57 14.7 +/- 1.57 0.220 / 0.380 G17 342.5 74.8 7.5 +/- 0.32 7.7 +/- 0.32 0.020 / 0.020 G19 267.1 68.1 7.4 +/- 1.16 7.9 +/- 1.16 0.030 / 0.030 G24 317.6 15.5 5.6 +/- 1.52 13.9 +/- 1.52 0.040 / 0.040 G28 59.2 52.9 7.3 +/- 1.12 8.9 +/- 1.12 0.040 / 0.040 G30 153.0 30.2 6.9 +/- 1.70 12.0 +/- 1.70 0.070 / 0.110