Fig. 3

Best-fit equivalent widths of a Gaussian component at rest-frame wavelength of 14.82 Å, based on both the global and local fits of the thermal component. For the global fits, the Gaussian line PSF is set to both the point source and extended source modes. By dividing the best-fit equivalent width (global fits/point source) by their errors, the line significance for each cluster is shown in the bottom panel.
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