Integrated MUSE spectrum of the galaxy #884 within an aperture of 1″ radius, slightly smoothed for display purposes. The Mg IIλλ2796, 2803 doublet and the neighboring Mg Iλ2852 line are indicated by the box; an unsmoothed zoom into this spectral region is shown in the inset panel. The green line at the bottom traces the 1σ uncertainty spectrum and indicates the locations of bright sky emission. Other prominent emission lines in the spectrum are labeled, with their corresponding peak signal-to-noise ratio SN_p.