PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/07-20:28:10
G10     259.4          34.9               10.7 +/-    2.31      17.0 +/-    2.31  0.040 / 0.060
G13     45.7           22.7                8.3 +/-    1.32      17.0 +/-    1.32  0.050 / 0.060
G15     70.3           54.8               10.3 +/-    0.41      12.3 +/-    0.41  0.140 / 0.340
G16     286.0          14.7                7.3 +/-    1.92      18.3 +/-    1.92  0.130 / 0.280
G20     285.3          57.1               10.4 +/-    0.82      12.2 +/-    0.82  0.080 / 0.250
G21     346.3          66.0                8.7 +/-    0.69       9.4 +/-    0.69  0.070 / 0.280
G26     259.5          11.5               10.2 +/-    1.52      27.5 +/-    1.52  0.040 / 0.050
G27     321.6          12.3                7.8 +/-    4.24      20.6 +/-    4.24  0.040 / 0.040
G29     166.0          40.0               11.6 +/-    0.58      16.9 +/-    0.58  0.140 / 0.440