Velocity integrated intensity map (grey scale) around core #3 for the molecules centred on the continuum core. The velocity range chosen for the integration is 95–97 km s⁻¹, which corresponds to the central emission peak. Temperature is the main beam brightness temperature T_mb. The black contours represent the result of a Gaussian fit to the emission; the levels are 20, 50, and 80% of the maximum. The maps are centred on the continuum core represented in blue contours (50% of the maximum). The beam is represented on the bottom left corner of each map.