PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/28-16:58:10
G02     34.5           54.6               19.8 +/-    1.34      23.7 +/-    1.34  0.040 / 0.040
G05     144.8          62.1               24.0 +/-    0.46      26.8 +/-    0.46  0.040 / 0.050
G06     54.6           15.8               15.4 +/-    1.68      37.6 +/-    1.68  0.030 / 0.020
G12     198.8          66.2               20.9 +/-    0.45      22.7 +/-    0.45  0.040 / 0.020
G20     198.6          28.2               30.0 +/-    1.16      54.6 +/-    1.16  0.030 / 0.020
G25     291.1          56.7               19.9 +/-    4.64      23.3 +/-    4.64  0.030 / 0.030
G29     310.8          33.1               20.3 +/-    1.65      33.4 +/-    1.65  0.150 / 0.190