\begin{table}%t2
  \caption{\label{table:pf_massratiodistribution}The mass ratio distribution resulting from different pairing functions, for different samples, as compared to the generating mass ratio distribution $\hq$. 
     }
  \small%\centering
\par
  \begin{tabular}{lccc}
    \hline
    \hline\noalign{\smallskip}
    Pairing & $\fqall$ & $\fq_{M_1 \approx \mmax}$ & $\fq_{M_1 \approx \mmin}$ \\
    \noalign{\smallskip}\hline
    RP         & $-$           & $\downarrow$    & $\uparrow$    \\
    PCRP       & $-$           & $\downarrow$    & $\uparrow$    \\
    \noalign{\smallskip}%\hline
    PCP-I      & $=$           & $=$             & $=$           \\
    PCP-II     & $\downarrow$  & $\approx$       & $\uparrow$     \\
    PCP-III    & $\uparrow$    & $\approx$       & $\uparrow$   \\
    \noalign{\smallskip}%\hline
    SCP-I      & $=$           & $\downarrow$    & $\uparrow$    \\
    SCP-II     & $\uparrow$    & $\downarrow$    & $\uparrow$   \\
    SCP-III    & $\uparrow$    & $\downarrow$    & $\uparrow$    \\
    \hline 
  \end{tabular}
\end{table}