EPIC spectra (data points with errors) of PLCKG147.3−16.6. Only data points above 2 keV are shown for clarity, but data down to 0.3 keV are used in the spectral fitting. The redshift estimate is ambiguous, with the χ² distribution showing three minima. Left panel: the best-fitting thermal model (solid lines) at z = 1.03 with the position of the redshifted Fe K line marked. Right panel: same for the second best solution at z = 0.62, consistent with the optical redshift.