The upper panels show the best-fit temperatures (asterisks) and 1σ uncertainties (boxes) in the wide band using pn or ACIS data. The lower panel shows the relative ACIS-pn temperature difference fT (=ΔT/⟨ T ⟩, diamonds) and its statistical 1σ uncertainty. The dotted and dashed lines show the weighted mean of fT ± the error of the mean.
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