Comparison between the gas parameters derived for the central and integrated spectra using the fitting procedure described in the text. From from left to right and top to bottom each panel shows the comparison between the Hα flux, and the Hα/Hβ, [OII]λ3727/Hβ, [SII]λ6717/[SII]λ6731, [NII]λ6584/Hα and [OIII]λ5007/Hβ line ratios. Only values with a S/N > 3 for both spectra have been included in each plot.
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