PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/16-21:12:40
G05     51.7           10.9                7.4 +/-    3.08      20.2 +/-    3.08  0.170 / 0.240
G10     241.6          20.2               13.5 +/-    3.24      29.5 +/-    3.24  0.320 / 0.310
G13     64.5           33.7                9.2 +/-    1.18      14.9 +/-    1.18  0.020 / 0.040
G15     110.2          56.7               10.9 +/-    0.71      12.8 +/-    0.71  0.030 / 0.040
G16     306.7          14.7                6.6 +/-    2.71      16.5 +/-    2.71  0.040 / 0.060
G20     256.8          43.3               10.1 +/-    2.25      14.0 +/-    2.25  0.040 / 0.070
G21     321.0          51.7                9.9 +/-    0.71      12.2 +/-    0.71  0.060 / 0.100
G26     279.2          18.9                9.4 +/-    1.15      21.2 +/-    1.15  0.070 / 0.130
G29     158.8          62.9                9.9 +/-    0.39      11.0 +/-    0.39  0.090 / 0.440