PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/10/29-06:57:40 G01 80.8 32.1 5.9 +/- 1.14 9.9 +/- 1.14 0.030 / 0.020 G07 130.3 39.6 6.8 +/- 0.73 10.0 +/- 0.73 0.030 / 0.020 G11 63.7 39.8 5.6 +/- 0.73 8.2 +/- 0.73 0.170 / 0.320 G13 286.1 38.7 3.1 +/- 2.79 4.6 +/- 2.79 0.100 / 0.250 G15 309.8 13.2 1.5 +/- 2.89 3.9 +/- 2.89 0.050 / 0.050 G17 218.1 59.0 7.5 +/- 1.11 8.6 +/- 1.11 0.070 / 0.050 G19 216.4 34.9 8.0 +/- 1.33 12.7 +/- 1.33 0.030 / 0.050 G28 343.2 61.4 4.8 +/- 0.58 5.4 +/- 0.58 0.040 / 0.050 G30 118.5 74.7 7.2 +/- 1.21 7.4 +/- 1.21 0.040 / 0.060