Data for: Direct and indirect approaches based on paper analysis by Py-GC/MS for estimating the age of documents

Raw chromatographic data of different types of paper. The data file contains the intensity values of each retention time recorded in the pyrogram of each sample that was used for the chemometric analysis.不同类型纸张的原始色谱数据。该数据文件包含了用于化学计量学分析的各样本热解谱图（pyrogram）中记录的各保留时间对应的强度值。