Spatially integrated and density weighted mean flux spectra for looptop (dashed line) and footpoint sources (plain lines) deduced from X-ray observations (black histograms), and computed with the diffusive transport of Kontar et al. (2014) model with n = 9.5 × 10¹⁰ cm^-3, d = 5.5 Mm, and λ = 1.4 × 10⁸ cm (red). The dotted vertical line indicates the energy at which the coronal and second footpoint spectra cross.