Probability of a SED fit as a function of the EBL scaling parameter. Different styles and colors of the lines represent different spectral shapes: power law (solid, black), power law with an exponential cut-off (dotted, green), log parabola (long dashed, blue), log parabola with exponential cut-off (dot-dashed, red). The vertical lines show the scaling for which the best probability is obtained (solid) and + 1 change in χ2 of the fit from this maximum (dotted). Nominal light scale of MAGIC is assumed in the middle panel. The light scale is decreased (increased) by 15% in left (right) panel.
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