PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/04/04-22:12:50 G01 80.4 33.2 12.3 +/- 0.80 20.3 +/- 0.80 0.100 / 0.180 G07 132.2 38.7 14.2 +/- 0.58 21.1 +/- 0.58 0.350 / 0.220 G11 61.9 37.3 11.1 +/- 1.59 16.9 +/- 1.59 0.070 / 0.080 G13 285.2 37.4 12.5 +/- 0.69 19.0 +/- 0.69 0.120 / 0.100 G15 309.0 13.4 9.4 +/- 3.92 24.2 +/- 3.92 0.030 / 0.030 G17 222.2 57.4 16.4 +/- 1.84 19.1 +/- 1.84 0.060 / 0.040 G18 56.4 21.9 9.2 +/- 3.10 19.4 +/- 3.10 0.130 / 0.180 G19 219.0 34.1 17.8 +/- 1.90 28.7 +/- 1.90 0.350 / 0.250 G28 6.0 60.7 12.3 +/- 1.20 13.9 +/- 1.20 0.030 / 0.060 G30 125.3 66.8 14.6 +/- 0.60 15.7 +/- 0.60 0.140 / 0.090