Spatial distribution of CH₃NH₂ in Orion KL. The data are from ALMA SV observations. The interval of contours in black is 0.03 Jy beam^-1 km s^-1, and the minimum contour is 0.03 Jy beam^-1 km s^-1. Negative flux is represented by the blue dashed contours: the minimum contour is −0.05 Jy beam^-1 km s^-1 and the interval is −0.03 Jy beam^-1 km s^-1. The cyan ellipse in the top left corner of the maps represents the synthetic beam. The black triangle shows source I, the black circle shows source n, the cross represents the compact ridge, and the cyan unfilled square and triangle indicate Positions A and B (see Sect. 4).