\begin{table}%t4
  \caption{Temperature and fluctuations (maximum amplitude)
           of the SPOrt antenna devices.}\label{phTempTab}
%\centering
\par
  \begin{tabular}{@{}lcc@{}}
      \hline \hline
     Device     & $T_{\rm ph}$~[K] & $\Delta T_{\rm ph}$~[K]\\
     \hline
     Horn       & 300     &    $<$$0.2$  \\
     Polarizer  & 80      &    $<$$0.1$  \\
     OMT        & 80      &    $<$$0.1$  \\
     \hline 
\end{tabular}
\end{table}