PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/02/09-20:28:10 G03 203.5 50.3 10.3 +/- 0.53 12.9 +/- 0.53 0.110 / 0.110 G07 262.0 18.9 9.9 +/- 1.57 22.4 +/- 1.57 0.090 / 0.140 G09 313.0 32.4 9.3 +/- 0.98 15.5 +/- 0.98 0.210 / 0.270 G16 80.6 64.4 9.7 +/- 0.87 10.6 +/- 0.87 0.130 / 0.230 G22 185.5 34.6 9.8 +/- 1.40 15.7 +/- 1.40 0.040 / 0.040 G23 338.3 66.4 9.2 +/- 0.95 10.0 +/- 0.95 0.040 / 0.030 G26 48.9 38.1 7.7 +/- 0.96 11.5 +/- 0.96 0.040 / 0.050 G27 128.4 15.3 10.1 +/- 2.63 25.0 +/- 2.63 0.040 / 0.050