Results of the Gaussian fit to the ALMA H₂CO spectra. Left: number of components that best fit each H₂CO spectrum according to the criteria described in Appendix D. The black ellipse in the bottom left corner represents the beam size. The black star marks the position of the protostar. Locations of sampled spectra are marked with empty black circles and labeled. Right: selected H₂CO spectra with the best fit Gaussian components. The spectra are taken from one single pixel. The data are plotted with a solid blue line. The dashed lines represent the best fit Gaussians, with red for the first component, blue for the second and green for the third. The black solid line represents the sum of all components. The gray vertical area marks the channels that were masked for the fit for spectra located within 0″.8 from the protostar. The dotted black vertical line marks the protostar’s v_LSR.