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Fig. 4.
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Relationship between EW Fe IItot and FWHM Fe II (a) and the same but for the EW Hβ and FWHM Hβ (b). The blue points denote objects with an Eddington ratio lower than 0.2, while red points indicate sources with an Eddington ratio larger than 0.2. The Spearman coefficients of correlations (r) and P-values are given in graphs.
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