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Fig. A.1

Fig. A.1 Refer to the following caption and surrounding text.

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Left: Reproduction of the mF814W versus (mF606WmF814W) CMD of NGC 2158 for stars brighter than mF814W = 21.8 with measured proper motions. Right: Proper-motion diagrams for stars in the three mF814W magnitude intervals indicated by the horizontal dotted lines in the CMD. Probable cluster members are shown as black dots, while field stars are marked by magenta starred symbols.

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