Six channel maps of the ¹³CO emission, , whose velocities are shown at the top-left corner of each panel. The plotted grayscale is that used for all panels with the exception of the first (top-left panel), where it is from 0.1 to 1.5 K km s^-1. The black contours show the positions of the leaves from Fig. A.1, whose numbering is colour-coded to visually separate the distinct areas: central region in red, NE ridge in green, SE U-shaped ridge in yellow, western cores in blue, and loose knots in purple.