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Fig. 8

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Relative residuals of the Xtend spectrum of NGC 3783 relative to a spline fit to the simultaneous RGS, Resolve, and NuSTAR spectra. The dotted purple lines indicate the 1σ combined statistical uncertainty of the combined RGS+Resolve spectra of NGC 3783, binned to the energy grid of the Xtend data. They represent a systematic uncertainty of the spline model for NGC 3783.

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