Best-fit Gaussian profiles for the J = 13−12, K = 0−6 methyl cyanide lines at the offset position (+4″, −16″) in the Orion KL map. Identical line widths and central velocities were assumed for all K-ladder transitions within a given kinematic component (see Sect. 4.1). The K-ladder lines above K = 6 were not detected at this position, so are excluded from the figure. Only one kinematic component (shown in red) is necessary to obtain a good fit in this case.