Figure 4
From: PubChem3D: Shape compatibility filtering using molecular shape quadrupoles

Volume distribution. The frequency of occurance of the three different volume types, analytic volume (V an , blue), monopole volume (V mp , red), and self-overlap volume (V so , green), for 17.1 million molecules from the PubChem Compound database, where all three volumes were binned into units of 5.0 Å3.