PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/04/10-19:43:00 G01 113.5 21.2 13.3 +/- 1.74 28.6 +/- 1.74 0.040 / 0.050 G07 99.8 57.8 13.4 +/- 0.76 15.5 +/- 0.76 0.040 / 0.070 G08 42.8 25.6 10.1 +/- 2.17 19.5 +/- 2.17 0.040 / 0.050 G09 176.7 21.5 12.9 +/- 1.54 27.5 +/- 1.54 0.030 / 0.040 G11 97.1 42.2 13.4 +/- 0.85 18.8 +/- 0.85 0.030 / 0.030 G13 314.3 24.5 10.1 +/- 1.50 20.0 +/- 1.50 0.030 / 0.030 G17 202.3 31.3 13.9 +/- 1.27 23.8 +/- 1.27 0.140 / 0.220 G18 85.6 22.4 11.4 +/- 2.81 23.7 +/- 2.81 0.130 / 0.240 G28 296.2 57.0 12.3 +/- 1.01 14.4 +/- 1.01 0.080 / 0.190 G30 2.6 74.1 13.2 +/- 0.77 13.6 +/- 0.77 0.080 / 0.190