Cumulative fluxes as a function of aperture radius estimated using the cumulative flux technique. Each panel shows the fluxes for a different data set or image (the name of the target for each row is shown in the lower right corner of the first column). First column: continuum emission of the data from Manara et al. (2019) (green dots) and the continuum emission from the new data (black dots). Second, third, and fourth columns: the ¹²CO, ¹³CO, and C¹⁸O moment zero emission from the new data, respectively. The blue dashed lines show the estimated disc total fluxes; the red solid lines show the disc radii, which are defined as the radii containing 95% of the total flux (see values reported in Tables 6 and 7). In the first column, only the total fluxes and disc radii estimated from the new continuum data are shown.