Fig. 8
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Comparison of mean reconstructed (blue) and ground-truth (green) spectra for three hard_hs ranges: (a) soft spectra (−1 ≤ hard_hs < −0.33), (b) intermediate spectra (−0.33 ≤ hard_hs < 0.33), and (c) hard spectra (0.33 ≤ hard_hs ≤ 1). Solid lines show the mean spectrum across all sources in each bin, and shaded regions indicate the 1σ standard deviation around the mean.
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