Model-predicted intensity maps of the blue-shifted (average over spectral channels at 2.2925, 2.3213, and 2.3516 μm), peak (average over spectral channels at 2.2945, 2.3237, and 2.3529 μm), and red-shifted (average over spectral channels at 2.2954, 2.3246, and 2.3543 μm) line components of the first (top panel), second (middle panel) and third (bottom) bandheads. Maps are normalised to the peak intensity and are displayed for an inclination of 70°, and a radius of 0.1 au. The physical parameters of the model are the same as in Fig. 8.