Tree-ring width of Quercus species from historical object sample 6239B/02A, Netherlands, Groningen@en

Species: Quercus species; No of rings: 108; first year: 1422; end year: 1530; Pith: not applicable; Heartwood: complete; Sapwood: incomplete; Number of sapwood rings: 17; Last ring under bark: absent本数据集的样本属性如下：树种为栎属（Quercus）；总年轮数：108；年轮起始年份：1422年；年轮终止年份：1530年；髓心：不适用；心材：完整；边材：不完整；边材年轮数：17；树皮下方无末次年轮。