PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/05/31-02:43:10 G10 245.6 23.7 10.1 +/- 4.39 20.4 +/- 4.39 0.040 / 0.060 G13 58.9 31.9 8.0 +/- 0.91 13.4 +/- 0.91 0.040 / 0.060 G15 96.5 57.3 9.7 +/- 0.75 11.3 +/- 0.75 0.060 / 0.140 G16 303.8 14.5 5.0 +/- 3.89 12.5 +/- 3.89 0.050 / 0.130 G20 262.5 46.9 9.5 +/- 0.62 12.5 +/- 0.62 0.080 / 0.190 G21 327.8 56.2 -3.0 +/- 0.98 -3.6 +/- 0.98 0.070 / 0.240 G26 275.4 17.3 7.4 +/- 1.67 17.5 +/- 1.67 0.030 / 0.050 G29 160.0 54.3 9.9 +/- 0.67 11.9 +/- 0.67 0.030 / 0.040