\begin{table}%t3
\caption{\label{bandedopoirraggiamento}Position, assignment and characterization of new bands observed after irradiation of CO:CH$_3$OH mixture at~16~K.}
%%\centering

\par
\begin{tabular}{ccccc}
   \hline\hline \noalign{\smallskip}
   \multicolumn{2}{c}{Band position} & Species & Assignment & Characterization \\
   cm$^{-1}$ & $\mu$m \\
   \hline
660  & 15.15 &  CO$_2$      & $\nu_2$  & bend          \\
1067  & 9.37 &  HCOCH$_2$OH & $\nu_7$  &   C--O str    \\
1090  & 9.17 &  HCO         & $\nu_2$  &  bend         \\
1159  & 8.63 &  HCOOCH$_3$  & $\nu_9$  &  CH$_2$ rock  \\
1247  & 8.02 &  H$_2$CO     & $\nu_2$  &  CH$_2$ rock  \\
1304  & 7.66 &  CH$_4$      & $\nu_4$  &  deform       \\
1500  & 6.67 &  H$_2$CO     & $\nu_3$  &  CH$_2$ scis  \\
1726  & 5.79 &  H$_2$CO     & $\nu_2$  &  C=O str      \\
1843  & 5.43 &  HCO         & $\nu_3$  &  C=O str      \\
2280 & 4.39 & $^{13}$CO$_2$ & $\nu_3$  & C=O str       \\
2325 & 4.30  &  OC$^{18}$O  & $\nu_3$  & C=O str       \\
2342 & 4.27  &  CO$_2$      & $\nu_3$  & C=O str       \\
3010  & 3.32 &  CH$_4$      & $\nu_3$  &  C--H str     \\
3700 & 2.70  &  CO$_2$      &          & combination   \\[2pt]
\hline
\end{tabular}
\end{table}