Tree-ring width of Quercus species from historical object sample 6173B/07A, Netherlands, Vlagtwedde

Species: Quercus species; No of rings: 40; first year: 1662; end year: 1702; Pith: not applicable; Heartwood: complete; Sapwood: incomplete; Number of sapwood rings: 4; Last ring under bark: absent物种：栎属（Quercus species）；年轮数量：40；起始年份：1662年；结束年份：1702年；树心：不适用；心材：完整；边材：不完整；边材年轮数量：4；树皮下的最后一年轮：不存在。