PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/11/15-06:27:40 G01 59.3 29.5 3.0 +/- 2.54 5.3 +/- 2.54 0.050 / 0.030 G06 179.3 14.1 -0.1 +/- 21.80 -0.2 +/- 21.80 0.040 / 0.040 G07 141.3 23.2 6.8 +/- 1.88 13.8 +/- 1.88 0.110 / 0.180 G11 49.7 28.0 3.4 +/- 1.58 6.3 +/- 1.58 0.160 / 0.190 G13 262.3 36.7 8.0 +/- 1.59 12.3 +/- 1.59 0.050 / 0.050 G15 292.8 17.0 5.6 +/- 1.46 13.3 +/- 1.46 0.040 / 0.050 G17 252.7 76.1 8.7 +/- 0.64 8.9 +/- 0.64 0.030 / 0.020 G19 230.6 52.1 9.1 +/- 2.78 11.2 +/- 2.78 0.030 / 0.030 G28 18.3 60.4 3.5 +/- 1.82 4.0 +/- 1.82 0.130 / 0.090 G30 143.9 57.3 7.9 +/- 0.86 9.2 +/- 0.86 0.090 / 0.100