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Fig. 1

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Differences on a line-to-line basis for each line list between the abundances derived from the Fe i and Fe ii lines in the CoRoT targets and in the Sun as a function of the lower excitation potential. The results for HD 42618 and HD 43587 are shown in the left-hand and right-hand panels, respectively. The mean iron abundance obtained for each line list is shown as a dashed line. The line-to-line scatters (in dex) are indicated.

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