PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/02/14-00:13:00 G01 94.6 30.4 10.0 +/- 1.34 17.4 +/- 1.34 0.040 / 0.050 G07 122.4 45.0 10.6 +/- 1.33 14.3 +/- 1.33 0.040 / 0.040 G11 71.3 40.6 8.3 +/- 1.33 11.9 +/- 1.33 0.070 / 0.160 G13 298.6 35.2 7.1 +/- 0.81 11.2 +/- 0.81 0.100 / 0.180 G17 210.5 51.9 11.0 +/- 0.54 13.5 +/- 0.54 0.060 / 0.040 G18 64.1 22.7 7.0 +/- 0.93 14.4 +/- 0.93 0.040 / 0.050 G19 212.5 22.6 10.3 +/- 2.69 21.2 +/- 2.69 0.090 / 0.220 G28 334.0 61.5 7.3 +/- 0.48 8.2 +/- 0.48 0.280 / 0.330 G30 86.3 78.9 9.7 +/- 0.60 9.9 +/- 0.60 0.080 / 0.110