\begin{table}%t3
  %\centering
\par
  \caption{\pronaosspm transmission computed in the PRONAOS/SPM 
photometric bands and their 3$\sigma$ errors.}
  \label{telescope_tab}
    \begin{tabular}{lcccc}
      \hline
      \hline
      Band&1&2&3&4\\
      \hline
      Wavelength [$\mic$]         &200&260&360&580\\
      Instrument to sky coupling
      factor&0.84~$\pm$~0.05&0.83~$\pm$~0.05&0.80~$\pm$~0.05&0.75~$\pm$~0.05\\
      Atmospheric transmission&0.992~$\pm$~0.003 &0.992~$\pm$~0.003
      &0.996~$\pm$~0.003 &0.998~$\pm$~0.003\\
      \hline
      \end{tabular}
  \end{table}