PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/29-19:27:50 G01 50.4 25.7 13.4 +/- 1.19 25.7 +/- 1.19 0.100 / 0.380 G06 177.1 25.6 17.1 +/- 1.73 32.9 +/- 1.73 0.130 / 0.280 G07 146.2 13.2 18.3 +/- 2.76 47.6 +/- 2.76 0.100 / 0.330 G11 44.9 15.9 11.1 +/- 2.22 26.9 +/- 2.22 0.070 / 0.340 G13 251.0 30.6 16.9 +/- 1.37 29.2 +/- 1.37 0.050 / 0.070 G15 284.9 15.5 14.2 +/- 1.77 34.9 +/- 1.77 0.050 / 0.080 G17 299.3 77.9 14.5 +/- 0.95 14.8 +/- 0.95 0.040 / 0.050 G19 245.1 57.8 15.9 +/- 0.76 18.4 +/- 0.76 0.030 / 0.050 G28 52.2 53.0 12.6 +/- 0.59 15.4 +/- 0.59 0.030 / 0.030 G30 149.5 41.3 14.9 +/- 1.15 21.2 +/- 1.15 0.030 / 0.040