PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/23-21:27:40
G10     258.3          34.1               11.9 +/-    1.51      19.2 +/-    1.51  0.040 / 0.050
G13     46.4           23.5                7.4 +/-    1.15      15.0 +/-    1.15  0.050 / 0.060
G15     71.4           54.9                9.2 +/-    0.72      11.0 +/-    0.72  0.140 / 0.420
G16     287.3          14.8                8.6 +/-    2.12      21.5 +/-    2.12  0.140 / 0.500
G20     283.0          56.1               11.3 +/-    0.77      13.3 +/-    0.77  0.160 / 0.310
G21     344.6          65.3                7.2 +/-    0.91       7.8 +/-    0.91  0.180 / 0.320
G26     260.6          12.0               11.2 +/-    1.41      30.0 +/-    1.41  0.080 / 0.210
G27     321.9          11.3               -1.9 +/-   34.66      -5.1 +/-   34.66  0.070 / 0.240
G29     165.6          40.9               10.6 +/-    1.35      15.1 +/-    1.35  0.040 / 0.050