PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/10-20:13:10
G10     258.2          34.1               10.4 +/-    1.83      16.9 +/-    1.83  0.200 / 0.670
G13     46.5           23.6                8.9 +/-    2.28      17.9 +/-    2.28  0.130 / 0.690
G15     72.4           55.5               10.9 +/-    0.90      12.9 +/-    0.90  0.050 / 0.050
G16     287.2          14.9                7.4 +/-    1.48      18.6 +/-    1.48  0.040 / 0.050
G20     283.4          56.5               10.5 +/-    2.62      12.3 +/-    2.62  0.110 / 0.180
G21     344.5          65.2               11.7 +/-    0.86      12.7 +/-    0.86  0.070 / 0.200
G26     260.6          12.0                9.4 +/-   21.82      25.0 +/-   21.82  0.040 / 0.030
G27     321.9          11.3               -6.4 +/-   31.85     -17.2 +/-   31.85  0.040 / 0.040
G29     165.8          41.4               11.5 +/-    0.67      16.4 +/-    0.67  0.110 / 0.090