PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/03/26-21:58:10 G01 75.5 33.0 7.7 +/- 1.58 12.7 +/- 1.58 0.060 / 0.110 G07 134.6 29.8 9.8 +/- 1.77 17.2 +/- 1.77 0.060 / 0.090 G11 55.6 32.7 6.3 +/- 1.59 10.4 +/- 1.59 0.100 / 0.080 G13 279.2 38.5 10.1 +/- 2.32 15.0 +/- 2.32 0.140 / 0.090 G15 305.6 14.6 5.7 +/- 3.07 14.3 +/- 3.07 0.060 / 0.080 G17 225.7 66.8 12.1 +/- 0.82 13.0 +/- 0.82 0.050 / 0.100 G18 50.2 18.5 7.4 +/- 3.28 16.9 +/- 3.28 0.040 / 0.050 G19 220.5 37.9 12.6 +/- 2.07 18.9 +/- 2.07 0.040 / 0.050 G28 3.6 61.1 8.5 +/- 0.66 9.6 +/- 0.66 0.030 / 0.030 G30 130.6 65.2 11.2 +/- 0.40 12.2 +/- 0.40 0.040 / 0.030