Tree-ring width of Quercus species from historical object sample 6496B/05M, N...

Species: Quercus species; No of rings: 50; first year: 1763; end year: 1813; Pith: not applicable; Heartwood: absent; Sapwood: absent; Number of sapwood rings: 0; Last ring...物种：栎属（Quercus）物种；年轮数量：50；起始年份：1763；终止年份：1813；髓心（Pith）：不适用；心材（Heartwood）：缺失；边材（Sapwood）：缺失；边材年轮数：0；末次年轮……