PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/02/05-00:43:00 G01 123.5 14.6 8.9 +/- 2.73 22.3 +/- 2.73 0.050 / 0.070 G07 65.7 68.6 6.3 +/- 0.91 6.7 +/- 0.91 0.050 / 0.060 G08 48.2 37.5 4.3 +/- 0.66 6.5 +/- 0.66 0.030 / 0.060 G09 178.5 32.3 9.3 +/- 1.39 15.6 +/- 1.39 0.040 / 0.070 G11 116.1 37.1 8.9 +/- 1.30 13.6 +/- 1.30 0.100 / 0.200 G13 320.2 14.4 3.2 +/- 1.89 8.1 +/- 1.89 0.090 / 0.280 G17 201.0 18.5 9.0 +/- 1.43 20.5 +/- 1.43 0.210 / 0.310 G28 284.6 55.6 6.6 +/- 0.63 7.8 +/- 0.63 0.140 / 0.270 G30 346.7 67.2 4.0 +/- 0.54 4.3 +/- 0.54 0.110 / 0.360