PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/03/09-20:13:00 G07 348.0 62.7 11.9 +/- 0.45 13.3 +/- 0.45 0.050 / 0.040 G08 89.2 51.7 12.0 +/- 1.73 14.9 +/- 1.73 0.040 / 0.040 G09 187.8 70.1 12.8 +/- 0.70 13.5 +/- 0.70 0.030 / 0.030 G11 141.7 16.7 12.8 +/- 1.84 30.6 +/- 1.84 0.030 / 0.020 G23 157.3 38.9 12.5 +/- 0.66 18.5 +/- 0.66 0.090 / 0.090 G27 53.3 31.2 10.6 +/- 1.29 18.2 +/- 1.29 0.100 / 0.090 G28 239.1 29.1 13.0 +/- 1.20 23.2 +/- 1.20 0.140 / 0.180 G30 305.2 38.0 10.6 +/- 1.53 15.9 +/- 1.53 0.090 / 0.170