Map of the observed (histograms) and modelled (red lines) spectra of o-NH₂D (1_1,1s − 1_0,1a). The background corresponds to a map of the iscocontours of the intensity integrated over all the hyperfine components. The inset map on the right shows the isocontours with the same scale for the right ascension and declination. The white crosses indicate the position of the B1-bN and B1-bS sources identified by Hirano et al. (1999), as well as the Spitzer source reported by Jørgensen et al. (2006).