Maps of the emission averaged over the observed ¹²CO lines. The numbers in the top left of each panel indicate the J + 1 → J rotational transition, while the circle in the bottom left denotes the corresponding HPBW. The cross marks the position of the disk. The minimum, maximum, and step for contour levels in units of Jy beam–¹ are as follows (panel by panel, from top to bottom, and from left to right): 3, 15.99, 3.25; 3, 19.63, 4.16; 3, 19.58, 4.14; 3, 25.79, 5.7 ; 3, 26.51, 5.88; 0.6, 15.98, 3.85; 0.6, 22.89, 5.57; 0.6, 21.25, 5.16; 0.6, 21.42, 5.2; 0.6, 16.99, 4.1; 0.39, 14.13, 3.43; 0.24, 3.69, 0.86.