PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2017/12/01-03:42:40 G07 330.9 57.1 3.8 +/- 0.66 4.4 +/- 0.66 0.090 / 0.150 G08 101.5 51.1 5.4 +/- 0.68 6.7 +/- 0.68 0.120 / 0.140 G09 196.0 76.1 6.0 +/- 0.67 6.1 +/- 0.67 0.050 / 0.050 G11 147.1 11.4 5.8 +/- 4.79 15.8 +/- 4.79 0.060 / 0.090 G16 45.6 13.1 1.9 +/- 2.18 5.0 +/- 2.18 0.210 / 0.200 G23 155.1 45.1 5.7 +/- 0.44 7.7 +/- 0.44 0.080 / 0.260 G27 56.3 31.9 3.9 +/- 1.28 6.6 +/- 1.28 0.040 / 0.040 G28 236.0 28.6 5.5 +/- 1.39 9.8 +/- 1.39 0.050 / 0.050 G30 300.8 34.5 3.0 +/- 1.32 4.7 +/- 1.32 0.030 / 0.040