Distribution of the LSR velocity (V_LSR, coloured contours) and line width (ΔV, greyscale maps) of methyl cyanide J = 12_K−11_K (left), J = 13_K−12_K (centre), and J = 14_K−13_K (right) emission across the Orion KL region, as determined from simultaneous Gaussian fits to the K = 0−10 lines (see Sect. 4.1 for details). The three rows show the kinematic properties from the two-component fits for the narrow component (top), the broad component (middle), and the intensity-weighted average of the two (bottom). Thick white contours on the bottom panels indicate the regions where two kinematic components were required to obtain a good fit to the line profiles. The various sources indicated are as described in Fig. 1.