Raw data for the characterization of Chauvet Cave charcoals and standard biochar

Data supporting the plots of the manuscript 'Technical strategies behind the earliest rock art masterpieces revealed by infrared reflectance and biochar characterization'.本数据集为研究手稿《红外反射（infrared reflectance）与生物炭（biochar）表征揭示早期岩石艺术杰作背后的技术策略》中的各类图表提供数据支撑。