Azimuthally averaged radial intensity profiles for the ¹²CO J = 2−1 line emission (top panel) and the 1.25 mm dust continuum emission (bottom panel). The grey solid lines with error bars show the observations. The blue solid lines show the SMOOTH model. Bottom left of each panel: we show the full-width at half-maximum (FWHM) of the beam for the gas and continuum observations, respectively. The vertical dotted grey lines indicate the location of the three prominent dust gaps.