Continuum-subtracted spectra integrated over the full field of view of the 15 ALMA-IMF B6-spw0 line cubes. The value in parentheses (if any) indicates the scaling factor applied to the spectrum. The vertical dashed dark blue lines show the channel range used to compute the moment 0 maps of methyl formate for all protoclusters except G012.80 and W43-MM2, for which tighter velocity ranges, shown with dotted brown and yellow lines, respectively, were used. The vertical colored bars on top of the plot show the rest frequencies of the corresponding species, indicated in the top-right corner.