\begin{table}%t6
%\centering
\par
\caption{\label{GLIMPSEerr_tab}Width, centre, and peak values of the sigma distributions.}
\begin{tabular}{crrr}
\hline\hline \noalign{\smallskip}
Band & $\sigma$ & Centre & Peak \\
\hline
IRAC~1  & 1.42 & $-$0.22 & 241.5 \\
IRAC~2  & 1.27 &    0.17 & 159.0 \\
IRAC~3  & 1.80 & $-$0.24 & 202.7 \\
IRAC~4  & 2.15 & $-$0.17 &  98.6 \\
\hline
\end{tabular}
\end{table}