Detailed look at the dip at 8.4 keV and the LEE. Left: Resolve, Xtend, NuSTAR, and XMM-Newton pn spectra from the decay phase. The red line shows the best-fit model to the Resolve data and including the UFO component, while the light blue line represents the model without it. Right: ΔC distribution from 1.3 × 10⁵ runs of the Monte Carlo simulation of the Resolve spectrum, and 1 × 10⁴ times for each of other three instruments (black histograms) and the observed ΔC distribution for the Resolve data (red histograms). Vertical lines mark the observed ΔC values for the other three instruments.