PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/11/25-04:42:30 G01 122.2 15.4 6.0 +/- 2.95 14.7 +/- 2.95 0.210 / 0.330 G07 74.6 66.8 6.3 +/- 0.53 6.8 +/- 0.53 0.180 / 0.330 G08 45.6 32.2 3.2 +/- 0.91 5.4 +/- 0.91 0.030 / 0.030 G09 175.2 27.2 5.1 +/- 1.41 9.5 +/- 1.41 0.040 / 0.030 G11 109.2 38.7 6.9 +/- 0.98 10.3 +/- 0.98 0.030 / 0.030 G13 319.1 16.9 4.0 +/- 2.26 9.4 +/- 2.26 0.030 / 0.030 G17 199.7 23.2 6.9 +/- 3.06 14.0 +/- 3.06 0.100 / 0.100 G28 283.5 54.6 4.9 +/- 2.51 5.9 +/- 2.51 0.070 / 0.080 G30 337.8 64.4 5.6 +/- 0.52 6.1 +/- 0.52 0.460 / 0.200