Tree-ring width of Quercus species from historical object sample 2139B/13A, Netherlands, Groningen

Species: Quercus species; No of rings: 43; first year: 1549; end year: 1592; Pith: not applicable; Heartwood: complete; Sapwood: incomplete; Number of sapwood rings: 7; Last ring under bark: absent

物种：栎属（Quercus species）；年轮数量：43；起始年份：1549年；结束年份：1592年；树心：不适用；心材：完整；边材：不完整；边材年轮数量：7；树皮下的最后一年轮：不存在。