PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/04/10-22:28:00 G01 39.2 13.5 8.5 +/- 5.47 22.0 +/- 5.47 0.040 / 0.050 G02 199.1 11.5 8.9 +/- 20.01 24.0 +/- 20.01 0.050 / 0.060 G06 176.6 39.8 12.3 +/- 1.65 17.9 +/- 1.65 0.100 / 0.140 G13 234.0 20.2 14.0 +/- 2.21 30.7 +/- 2.21 0.120 / 0.160 G15 267.1 11.1 10.8 +/- 1.67 29.6 +/- 1.67 0.080 / 0.120 G17 10.2 67.2 9.5 +/- 0.94 10.3 +/- 0.94 0.090 / 0.140 G19 287.0 70.6 9.4 +/- 0.53 9.9 +/- 0.53 0.030 / 0.030 G24 314.7 23.0 9.0 +/- 1.48 18.4 +/- 1.48 0.030 / 0.030 G28 71.8 48.4 10.7 +/- 0.60 13.8 +/- 0.60 0.070 / 0.290 G30 155.0 23.2 14.4 +/- 1.68 29.5 +/- 1.68 0.090 / 0.370