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PDFs from representative satisfactory and unsatisfactory structures from (a), (c) the MPD and (b), (d) the COD. Blue curves are the measured PDF of BaTiO3 nanoparticles. Red curves are the calculated PDFs after retrieving from the databases using heuristic 1 and automatically fitting to the data (see Section 2 for details). Offsets below in green are the difference curves.
