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\begin{document}
\begin{tabular}{l|rrrrrrr}
& $A_{3}$ & $A_{4}$ & $A_{5}$ & $A_{6s}$ & $A_{7}$ & $A_{8}$ & $A_{9}$ \\
\hline
$A_{3}$ & $1.00 $ &         $-0.03 $ &      $-0.07 $ &      $-0.09 $ &      $-0.04 $ &      $0.03 $ &       $0.11 $  \\
$A_{4}$ & &  $1.00$ &        $0.10$ &        $-0.03 $ &      $0.08 $ &       $0.07 $ &       $0.03 $ \\
$A_{5}$ & &  &  $1.00$ &        $-0.08 $ &      $-0.04 $ &      $0.07 $ &       $0.07 $  \\
$A_{6s}$ & &  &  &  $1.00$ &        $0.01 $ &       $-0.01 $ &      $-0.01 $  \\
$A_{7}$ & &  &  &  &  $1.00$ &        $0.07 $ &       $-0.09 $  \\
$A_{8}$ & &  &  &  &  &  $1.00$ &   $-0.12 $ \\
$A_{9}$ & &  &  &  &  &  &  $1.00$ \\
\end{tabular}
\end{document}
