Table 16 The percentage \(\rho _{2\delta +2}^{(\delta )}\) (%) of the number of 2-fringe-trees in \({\mathcal {FT}}_{0,2}^{(\delta )}\) that have at most \(2\delta +2\) vertices to the number of 2-fringe-trees in \({\mathcal {FT}}_{0,2}^{(\delta )}\)