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Fig. 4

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Three steps in construction of the ODF. Left: schematic representation of monochromatic opacities in an interval of wavelengths divided into steps of λi. The red vertical lines mark one ODF step with λ ∈ [λ2, λ3]. Middle: opacities of that step sorted by magnitude. The distribution is mapped onto the unit interval w ∈ [0, 1] and the wavelength dependence is lost within the step. Right: sorted opacities discretised in ODF substeps.

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