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\begin{document}
\small


  \begin{tabular}{ l |lll}
\hline
                &  $\bar{A}_{\rm fav}^{D K\xspace\xspace^{*0}\xspace,\,K\pi}$ \xspace &  $\bar{R}_+^{D K\xspace\xspace^{*0}\xspace,\,K\pi}$ \xspace &  $\bar{R}_-^{D K\xspace\xspace^{*0}\xspace,\,K\pi}$ \xspace\\
\hline
 $\bar{A}_{\rm fav}^{D K\xspace\xspace^{*0}\xspace,\,K\pi}$ \xspace    & $\phantom{-}1$ &  $\phantom{-}0.091$ &  $\phantom{-}0.083$  \\
 $\bar{R}_+^{D K\xspace\xspace^{*0}\xspace,\,K\pi}$ \xspace      & $\phantom{-}0.091$ &  $\phantom{-}1$ &  $-0.081$  \\
 $\bar{R}_-^{D K\xspace\xspace^{*0}\xspace,\,K\pi}$ \xspace      & $-0.083$ &  $-0.081$ &  $\phantom{-}1$  \\
\hline
\end{tabular}
\end{document}
