¹²CO zeroth moment images of the discs with overlapping ellipses including 95 (solid) and 68% (dashed) of the total flux. The ellipses are centred on the target source centre. All bars in the bottom right of each panel are of 1.″0 in length, which is ~140 au at the distance of Taurus. The beam FWHM size is shown in the bottom left of each panel. In each image, the colour scale has the peak flux as the maximum, and two times the image rms as minimum. White contours show five times the rms of the continuum emission.