K-$\pi$ (top) and p-K (bottom) separation power as a functionof the transverse momentum of a track when $t_{\rm{ev}}^{\rm{TOF}}$ (dashed line), $t_{\rm{ev}}^{\rm{T0}}$ (dash-dottet line), $t_{\rm{ev}}^{\rm{Best}}$ (solid line) and $t_{\rm{ev}}^{\rm{Fill}}$ (dotted line) are used.