PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-03:57:40
G05     51.9           9.7                 4.3 +/-    2.53      12.2 +/-    2.53  0.040 / 0.050
G10     241.2          17.8               12.1 +/-    2.09      28.0 +/-    2.09  0.040 / 0.060
G13     66.5           35.2                9.0 +/-    0.98      14.2 +/-    0.98  0.090 / 0.260
G15     111.5          56.2               10.7 +/-    0.77      12.6 +/-    0.77  0.320 / 0.380
G20     265.9          58.3               11.5 +/-    0.74      13.2 +/-    0.74  0.090 / 0.090
G21     319.9          51.6                9.6 +/-    0.55      11.8 +/-    0.55  0.070 / 0.100
G26     278.2          19.6               10.1 +/-    1.81      22.6 +/-    1.81  0.030 / 0.040
G29     160.9          64.4               10.0 +/-    0.35      11.0 +/-    0.35  0.030 / 0.030