PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/29-16:42:30
G02     29.5           58.8               18.3 +/-    0.83      21.0 +/-    0.83  0.050 / 0.050
G05     151.8          57.1               17.3 +/-    0.54      20.2 +/-    0.54  0.050 / 0.050
G06     51.7           19.9               12.0 +/-    3.03      26.5 +/-    3.03  0.020 / 0.030
G12     207.0          71.8               13.8 +/-    0.58      14.4 +/-    0.58  0.020 / 0.030
G19     98.2           10.4               14.4 +/-    1.51      39.9 +/-    1.51  0.270 / 0.380
G20     198.0          22.9               15.1 +/-    2.69      31.1 +/-    2.69  0.190 / 0.260
G25     299.5          53.4               12.8 +/-    1.35      15.6 +/-    1.35  0.040 / 0.030
G29     307.0          29.2               14.4 +/-    2.32      25.6 +/-    2.32  0.030 / 0.030