Tree-ring width of Quercus species from historical object sample 6668B/05A, Germany, Hardegsen-Espol

Species: Quercus species; No of rings: 177; first year: 1688; tree-death year: 1865; Pith: not applicable; Heartwood: complete; Sapwood: complete; Number of sapwood rings: 31; Last ring under bark: present物种：栎属（Quercus）物种；总年轮数：177；树木初始生长年份：1688；树木死亡年份：1865；髓心：不适用；心材：完整；边材：完整；边材年轮数：31；树皮下尚存最后一轮年轮：存在