PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/07/08-14:42:50 G01 111.7 22.9 11.3 +/- 0.85 23.1 +/- 0.85 0.030 / 0.030 G07 98.5 61.8 10.5 +/- 0.64 11.8 +/- 0.64 0.040 / 0.030 G08 42.5 24.3 6.3 +/- 1.64 12.6 +/- 1.64 0.100 / 0.220 G09 174.9 16.9 11.0 +/- 1.23 26.0 +/- 1.23 0.110 / 0.230 G11 95.3 42.2 11.2 +/- 0.56 15.7 +/- 0.56 0.040 / 0.060 G13 313.0 25.6 9.9 +/- 2.52 19.1 +/- 2.52 0.040 / 0.060 G17 204.2 32.4 12.1 +/- 0.97 20.1 +/- 0.97 0.030 / 0.040 G18 85.4 23.3 7.6 +/- 0.98 15.4 +/- 0.98 0.030 / 0.050 G28 308.1 59.9 10.6 +/- 0.92 12.1 +/- 0.92 0.050 / 0.100 G30 3.3 74.8 11.5 +/- 0.37 11.9 +/- 0.37 0.040 / 0.070