Distribution of flux density measurements of C7 on the sky. The sizes of the circles are proportional to the flux densities of C7, which are in the range from 0.17 Jy to 4.4 Jy. The median position of the scatter is marked by a plus sign. The dashed line connects the median position of C7 and the radio core. The axis of maximum beaming (PA_mb = −122°) and symmetry axis (PA_sym = −120°) are denoted by dotted line and dot-dashed line, respectively.