\begin{table}%T7
\caption{ FPI cavity errors summary over the central 45~mm 
         (see Sect.~\ref{sec:telecentric}).
         }
\label{tab:defect_summary_45mm}
%\centering
\small
\begin{tabular}{cccc}
\hline\hline\noalign{\smallskip}
FPI \#                 &  $\sigma_{t}^{r}$ & P--V$^L$  & Flatness \\
\hline\noalign{\smallskip}
1         & 8.8 & $-$32,+89  &  $\lambda / 52$  \\
2         & 9.1 & $-$27,+67  &  $\lambda / 67$  \\
\hline
\end{tabular}
\end{table}