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Fig. 6
Upper left panel: fit to the Mg i 5528.4 Å line in star 235. Upper right panel: fit to the Si i 6243.8 Å line in star 224. Lower left panel: fit to the Ca i 6439.1 Å line in star 235. Lower right panel: fit to the Ti ii 6559.6 Å line in star 224. Symbols are the same as in Fig. 4 (upper panel).
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