Spatial distribution of the low emission pixels in N11C. Left panel: [O iii] map for N11C; right panel: MIPS 24 µm map for N11C. Both maps are convolved to 12″ and resampled to 12″ pixels. The black crosses correspond to pixels that have low surface brightness (on the left of the bulk of the regions in Figs. 1 and 2, corresponding to values of 24 µm lower than 10⁶ W m⁻² sr⁻¹) showing a different behavior from that of the global relation.