\begin{table}%t2
\caption{\label{tab2}Sensitivity of the three indicators [O~I], O~I and OH to changes of 100~K in effective temperature, 0.3~dex in gravity and metallicity, and 0.5~km~s$^{-1}$ in microturbulence.}
%\centerline
{
\begin{tabular}{lccccc}
\hline\hline
 & & $\Delta T_{\rm eff}=\pm100$~K & $\Delta \log{g}=\pm0.3$~dex & $\Delta$[Fe/H$] =\pm0.3$~dex & $\Delta\xi_{\rm t}=\pm0.5$~km~s$^{-1}$\\ \hline  
[O~I]~& Star & $\Delta$[O/H] & $\Delta$[O/H]  & $\Delta$[O/H]  & $\Delta$[O/H]  \\ \hline
 & \object{HD~22049}  & $\pm$$0.01 $  & $\pm$$0.14$ & $\pm$$0.09$ & $\pm$$0.00^1$\\
 & \object{HD~37124} & $\pm$$0.01$   & $\pm$$0.14$ & $\pm$$0.08$ & $\pm$$0.00^1$\\
 & \object{HD~9826}  & $\pm$$0.01$   &  $\pm$$0.14$ & $\pm$$0.09$ & $\pm$$0.01$\\ \hline
O~I & Star & $\Delta$[O/H] & $\Delta$[O/H]  & $\Delta$[O/H] & $\Delta$[O/H] \\ \hline
 & \object{HD~22049} & $\mp$$0.14 $  & $\pm$$0.09$ & $\pm$$0.02$ & $\mp$$0.02$\\
 & \object{HD~37124} & $\mp$$0.10$   & $\pm$$0.05$ & $\pm$$0.02$ & $\mp$$0.02$\\
 & \object{HD~9826}  & $\mp$$0.07$   &  $\pm$$0.05$ & $\pm$$0.02$ & $\mp$$0.03$\\ \hline 
OH & Star & $\Delta$[O/H] & $\Delta$[O/H]  & $\Delta$[O/H] & $\Delta$[O/H] \\ \hline
 & \object{HD~22049} & $\pm$$0.05 $  & $\mp$$0.03$ & $\pm$$0.18$ & $\pm$$0.00^1$\\
 & \object{HD~37124} & $\pm$$0.10$   & $\mp$$0.05$ & $\pm$$0.20$ & $\pm$$0.00^1$\\
 & \object{HD~9826}  & $\pm$$0.12$   &  $\mp$$0.05$ & $\pm$$0.20$ & $\pm$$0.00^1$\\ \hline 
\end{tabular}}
\smallskip
 $^1$ These sensitivities are based on the method described in Sect.~\ref{AnForb}. The values 
can be slightly larger if more explicit calculations are carried~out.
\end{table}