<i>B</i>. <i>tryoni</i> lines used in the GC-FID analyses.

Column heading “Screened generations” refers to the generations in the laboratory post-collection when the GC-FID analyses were carried out. Precise numbers for these generations could not be provided for S06, because records for its first few years in the laboratory were not available."筛选代次（Screened generations）"列标题指代样本采集后于实验室中开展气相色谱-氢火焰离子化检测器（GC-FID）分析阶段对应的代次。针对S06样本，无法提供此类代次的精确数值，原因是该样本在实验室初始数年的相关记录未留存。