PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/08-18:12:40
G02     30.2           58.1               10.1 +/-    0.75      11.6 +/-    0.75  0.040 / 0.060
G05     151.9          58.2                9.5 +/-    0.71      10.9 +/-    0.71  0.040 / 0.040
G06     52.9           17.8                6.7 +/-    2.94      15.6 +/-    2.94  0.020 / 0.030
G12     202.3          69.6                8.4 +/-    0.52       8.9 +/-    0.52  0.030 / 0.030
G20     197.9          25.2               10.6 +/-    3.35      20.6 +/-    3.35  0.030 / 0.030
G25     295.8          55.4               10.3 +/-    3.86      12.2 +/-    3.86  0.030 / 0.030
G29     307.8          29.6                9.9 +/-    1.32      17.5 +/-    1.32  0.200 / 0.220