The marginalized best-fit ﹩{{ \mathcal M }}_{{\rm{obs}}}﹩ from the ﹩{{ \mathcal M }}_{228}﹩ model (red lines) is compared to the marginalized ﹩{{ \mathcal D }}_{{\rm{kep}}}﹩ (blue histograms and blue lines). The two columns of plots show the differential (left) and cumulative distribution functions (right). From top to bottom, the rows of plots show the: (1) observed multiplicity (m_obs), (2) orbital periods of all planets (P_orb), (3) orbital periods of singles (planets in systems of observed multiplicity m_obs = 1), (4) orbital periods of multis (observed multiplicity m_obs ≥ 2), and (5) orbital period ratios of neighbor planets (P_j/P_j−1 for 2 ≤ j ≤ m_obs). The green dashed lines in rows (3) and (4) are plotted for reference: the period distribution of multis in (3) and singles in (4).