Table 11 The percentage \(\rho _r\) of the number of chemical compounds with rank at most \(r\in [0,4]\) over all chemical compounds in PubChem
\(\rho _0\) | \(\rho _1\) | \(\rho _2\) | \(\rho _3\) | \(\rho _4\) |
|---|---|---|---|---|
\(2.9\%\) | \(16.3\%\) | \(44.5\%\) | \(68.8\%\) | \(84.7\%\) |