PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/03/16-21:12:50 G01 118.6 17.7 16.7 +/- 1.31 38.8 +/- 1.31 0.040 / 0.040 G07 88.6 62.3 15.1 +/- 0.64 16.8 +/- 0.64 0.040 / 0.030 G08 44.3 29.8 11.6 +/- 1.41 20.4 +/- 1.41 0.080 / 0.070 G09 177.3 26.6 18.2 +/- 1.43 34.3 +/- 1.43 0.070 / 0.060 G11 104.4 40.5 15.2 +/- 0.66 22.0 +/- 0.66 0.080 / 0.230 G13 317.3 20.3 10.0 +/- 2.44 21.9 +/- 2.44 0.100 / 0.200 G17 200.7 26.2 20.4 +/- 1.59 38.7 +/- 1.59 0.120 / 0.130 G18 90.8 20.6 14.2 +/- 1.43 30.7 +/- 1.43 0.100 / 0.120 G28 287.3 55.0 13.7 +/- 1.99 16.3 +/- 1.99 0.040 / 0.030 G30 347.8 69.3 14.2 +/- 0.92 15.1 +/- 0.92 0.040 / 0.030