PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/10-21:13:10
G10     258.5          33.0               17.7 +/-    2.37      29.2 +/-    2.37  0.130 / 0.320
G13     46.5           24.2               11.9 +/-    2.65      23.8 +/-    2.65  0.100 / 0.320
G15     77.9           58.6               15.2 +/-    0.98      17.5 +/-    0.98  0.040 / 0.040
G16     286.3          14.5               13.2 +/-    1.98      33.2 +/-    1.98  0.040 / 0.050
G20     282.7          56.1               14.7 +/-    2.16      17.3 +/-    2.16  0.100 / 0.180
G21     346.0          66.2               14.8 +/-    0.58      16.0 +/-    0.58  0.070 / 0.130
G26     259.5          11.8               20.1 +/-    3.68      54.0 +/-    3.68  0.030 / 0.030
G29     166.9          40.8               18.2 +/-    0.92      26.1 +/-    0.92  0.030 / 0.030