PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/09/22-09:27:50 G01 113.3 21.9 3.5 +/- 1.90 7.4 +/- 1.90 0.030 / 0.030 G07 96.3 62.1 5.0 +/- 0.50 5.6 +/- 0.50 0.040 / 0.030 G08 42.5 24.0 3.2 +/- 2.62 6.5 +/- 2.62 0.090 / 0.160 G09 172.7 15.3 3.8 +/- 2.57 9.4 +/- 2.57 0.090 / 0.140 G11 96.2 41.9 4.2 +/- 0.61 5.9 +/- 0.61 0.030 / 0.030 G13 314.0 24.6 3.4 +/- 1.79 6.6 +/- 1.79 0.030 / 0.020 G17 202.8 32.8 5.8 +/- 1.27 9.5 +/- 1.27 0.110 / 0.190 G18 85.8 22.7 3.6 +/- 1.20 7.4 +/- 1.20 0.120 / 0.220 G28 303.2 59.1 3.7 +/- 1.32 4.2 +/- 1.32 0.090 / 0.160 G30 355.4 73.0 4.7 +/- 0.93 4.9 +/- 0.93 0.100 / 0.140