PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/07/25-11:57:50 G01 124.7 12.4 4.6 +/- 4.61 12.1 +/- 4.61 0.070 / 0.090 G07 66.3 67.2 6.3 +/- 0.64 6.8 +/- 0.64 0.080 / 0.090 G08 51.1 41.3 3.8 +/- 0.87 5.4 +/- 0.87 0.030 / 0.040 G09 178.2 35.3 7.6 +/- 1.17 12.0 +/- 1.17 0.030 / 0.030 G11 116.8 37.1 5.8 +/- 0.46 8.9 +/- 0.46 0.080 / 0.310 G13 320.2 14.0 3.6 +/- 2.26 9.2 +/- 2.26 0.130 / 0.330 G17 200.7 13.2 3.7 +/- 3.01 9.5 +/- 3.01 0.090 / 0.090 G18 101.3 17.4 4.5 +/- 1.26 10.6 +/- 1.26 0.090 / 0.090 G28 271.8 48.8 6.1 +/- 2.84 7.8 +/- 2.84 0.120 / 0.190 G30 335.7 62.7 5.3 +/- 0.32 5.9 +/- 0.32 0.120 / 0.230