PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/07/11-22:43:00 G02 62.9 30.4 10.7 +/- 1.57 18.5 +/- 1.57 0.030 / 0.030 G05 52.3 56.5 9.3 +/- 0.72 10.9 +/- 0.72 0.030 / 0.040 G12 181.9 25.4 14.4 +/- 1.53 27.9 +/- 1.53 0.180 / 0.320 G13 124.1 18.5 13.9 +/- 0.95 31.8 +/- 0.95 0.210 / 0.270 G15 162.8 15.1 15.2 +/- 2.09 37.8 +/- 2.09 0.080 / 0.070 G21 274.9 19.5 12.3 +/- 2.08 27.5 +/- 2.08 0.060 / 0.070 G25 229.8 48.2 12.5 +/- 3.14 16.1 +/- 3.14 0.080 / 0.190 G29 330.5 58.1 11.6 +/- 1.14 13.4 +/- 1.14 0.120 / 0.200