PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/03-17:28:10
G02     53.6           37.8               13.9 +/-    0.45      20.9 +/-    0.45  0.050 / 0.060
G05     79.6           69.6               13.8 +/-    0.22      14.7 +/-    0.22  0.040 / 0.070
G12     187.4          41.1               15.3 +/-    1.15      21.9 +/-    1.15  0.140 / 0.310
G20     204.2          51.7               15.4 +/-    1.35      19.0 +/-    1.35  0.130 / 0.310
G21     265.7          14.3               15.0 +/-    0.87      37.9 +/-    0.87  0.050 / 0.060
G25     244.8          56.2               15.8 +/-    0.58      18.6 +/-    0.58  0.050 / 0.060
G29     326.9          52.0               12.8 +/-    0.67      15.7 +/-    0.67  0.030 / 0.040