PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/02/09-02:12:40 G01 71.9 33.1 3.3 +/- 0.77 5.4 +/- 0.77 0.100 / 0.390 G07 136.9 32.1 7.4 +/- 1.11 12.4 +/- 1.11 0.100 / 0.310 G11 56.1 33.2 1.9 +/- 0.73 3.1 +/- 0.73 0.030 / 0.040 G13 276.7 37.3 4.5 +/- 0.98 6.9 +/- 0.98 0.030 / 0.050 G15 302.7 15.6 0.8 +/- 2.76 2.0 +/- 2.76 0.040 / 0.040 G17 231.6 67.0 4.3 +/- 0.91 4.6 +/- 0.91 0.030 / 0.050 G19 223.6 41.7 4.5 +/- 0.92 6.4 +/- 0.92 0.050 / 0.080 G28 19.2 59.2 2.5 +/- 0.26 2.8 +/- 0.26 0.040 / 0.060 G30 134.2 58.2 4.4 +/- 1.16 5.1 +/- 1.16 0.040 / 0.090