Tree-ring width of Quercus species from historical object sample 6068B/05A, Netherlands, Zutphen

Species: Quercus species; No of rings: 77; first year: 1560; end year: 1637; Pith: not applicable; Heartwood: complete; Sapwood: complete; Number of sapwood rings: 16; Last ring under bark: present物种：栎属（Quercus）物种；年轮总数：77；起始年份：1560；终止年份：1637；髓心（Pith）：不适用；心材（Heartwood）：完整；边材（Sapwood）：完整；边材年轮数：16；树皮下末次年轮：存在