PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/01/22-03:12:40 G01 79.6 33.2 4.3 +/- 1.04 7.0 +/- 1.04 0.050 / 0.040 G07 132.7 37.7 7.5 +/- 0.70 11.4 +/- 0.70 0.040 / 0.040 G11 61.1 36.5 4.8 +/- 0.75 7.4 +/- 0.75 0.080 / 0.190 G13 285.0 37.2 4.7 +/- 1.14 7.1 +/- 1.14 0.110 / 0.210 G15 308.1 13.9 2.2 +/- 2.58 5.7 +/- 2.58 0.040 / 0.040 G17 223.0 61.9 6.3 +/- 1.54 7.0 +/- 1.54 0.050 / 0.040 G19 219.3 36.0 7.1 +/- 1.86 11.0 +/- 1.86 0.030 / 0.060 G28 7.7 60.5 3.8 +/- 1.55 4.3 +/- 1.55 0.030 / 0.050 G30 126.3 65.1 6.0 +/- 0.50 6.5 +/- 0.50 0.050 / 0.080