Normalised radial profile for ¹²CO (blue) and ¹³CO (red) produced using gofish and continuum (green) produced using frank. These radial profiles are not de-convolved and, therefore, might not be directly comparable in width. The lower x-axis limit in each radial profile is set at the first resolved resolution element of the ¹²CO observation. The blue, red, and green bars show the resolution of the observations.