Experimental data used in the quality evaluation, currently composed of C-H bond order parameters and X-ray scattering form factors, are stored in /Data/experiments in the NMRlipids Databank repository. Similarly to simulations, each experimental data set has a README.yaml file containing all the relevant information about the experiment. The keys and their descriptions for the experimental data, as well as detailed instructions to add the date, are given in Table and in the NMRlipids databank documentation . The NMR data currently in the NMRlipids Databank are taken from Refs. 15, 16, 59-63 and the X-ray scattering data from Refs. 63-69. In addition, previously unpublished NMR data for POPE, POPG, and DOPC was acquired as described in the supplementary information (Figs. ) and contributed to the Databank.