Table 3.

Percentages of molecules with similarity scores above t_min from the ratio-of-Gaussians approximation with the fitted ChemDB parameters

tmin	Gaussian ratio (%)	No. Hits (D=1 M)
0.4	0.033	330
0.5	0.015	150
0.6	0.010	100
0.7	0.007	70
0.8	0.004	40
0.9	0.002	20

The number of expected molecule hits is also shown for a database of size D=1M. These values provide a qualitative estimate of the number of hits expected for a typical query above the given Tanimoto thresholds.