Tree-ring width of Quercus species from historical object sample 6668B/02A, Germany, Hardegsen-Espol@en

Species: Quercus species; No of rings: 170; first year: 1645; tree-death year: 1815; Pith: not applicable; Heartwood: complete; Sapwood: complete; Number of sapwood rings: 24; Last ring under bark: present物种：栎属（Quercus）物种；年轮总数：170；最早年轮对应年份：1645；树木死亡年份：1815；髓心：不适用；心材：完整；边材：完整；边材年轮数：24；树皮下方存在末次年轮