Tree-ring width of Quercus species from historical object sample 6771B/05A, Netherlands, Schoonebeek@en

Species: Quercus species; No of rings: 77; first year: 1763; tree-death year: 1840; Pith: not applicable; Heartwood: complete; Sapwood: complete; Number of sapwood rings: 13; Last ring under bark: present物种：栎属（Quercus）物种；年轮总数：77轮；生长初始年份：1763年；树木死亡年份：1840年；髓心：不适用；心材：完整；边材：完整；边材年轮数：13轮；树皮下存在最后一轮年轮