PDFs of increments of the dust intensity for the input and output maps of the component separation applied to the mock data. The PDFs of , and are compared for three lag values: 2 pixels (left), 8 (middle), and 32 (right). The PDFs are plotted as a function of δI/σ_l, where σ_l is the standard deviation of the increments of at lag l. The colored bands represent ±1σ error-bars.