Pre-processed raw data and the data further processed with the data normalisation methods used in this study are available in Excel files:

Raw is the unadjusted data; CRMN.norm, EigenMS.norm, PQN.norm, SVR.norm, LOWESS.norm are the data further processed with the corresponding normalisation methods; Injection sequence describes the injection order of the GC-MS experiment. This information is used for QC-based normalisation.