Tree-ring width of Quercus species from historical object sample 5521B/02A, Netherlands, Zutphen@en

Species: Quercus species; No of rings: 31; first year: 1388; end year: 1419; Pith: not applicable; Heartwood: complete; Sapwood: incomplete; Number of sapwood rings: 8; Last ring under bark: absent物种：栎属（Quercus）物种；年轮总数：31；起始年份：1388；终止年份：1419；髓心（Pith）：不适用；心材（Heartwood）：完整；边材（Sapwood）：不完整；边材年轮数：8；树皮下方的末次年轮：缺失