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Left: Annual percentage of total missing rings across all series (including all seed sources; gray), local seed sources (< 55 km away from the plantation site; orange), and distant seed sources (>55 km from the plantation; red). Right: Scanned image of pitch pine cores with lines pointing to the year 1992, which is apparent in the far-left tree core as a micro ring, almost imperceptible in the middle core, and clearly evident in the far right core.
