As part of the data gathered through the use of the CrystalNN bond-detection algorithm, we store in our dataset the coordination environment of all the materials. Meaning, for each material, we obtain a list of bonds present and the coordination number of each atom. This information is stored in JSON format, like this: { ' material_id ': 'mp -39105 ' , ' formula_pretty ': ' MgTa2N3 ' , 4-and 5-fold coordination also occur in significant numbers. Or "what are the most common coordination numbers for Ce?" -8 is the most common, followed by 6 and 12. Another possible use for this information is to draw statistics of coordination numbers for specific elements across the entire MP database, as shown in Figure .