Tree-ring width of Quercus species from historical object sample 6744B/02A, Netherlands, Schoonebeek@en

Species: Quercus species; No of rings: 87; first year: 1763; tree-death year: 1850; Pith: not applicable; Heartwood: absent; Sapwood: absent; Number of sapwood rings: 0; Last ring under bark: absent物种：栎属（Quercus）物种；年轮总数：87；起始年份：1763年；树木死亡年份：1850年；髓心（Pith）：不适用；心材（Heartwood）：缺失；边材（Sapwood）：缺失；边材年轮数：0；树皮下的最后一圈年轮：缺失