\begin{table}%t2
%\centering
\par
\caption{This table comprises all lines used for the abundance analysis. In Cols. 
3 and 4 we compiled the contributions of blend lines and additional comments, respectively.}\label{usedlines}
\begin{tabular}{llll}
\hline\hline
Element/Ion   & Wavelengths   & Blends & Comments~~~\\
\hline
Helium        & He~I 5876      & weak Fe~II                                      & blend of 5 He~I lines~\\ 
              & He~I 6678      & weak Fe~II/Si~II $\ga$~15~000~K             & He~I 6 times stronger than blends~\\
              & He~I 7065      & none                                             & useful $\ga$~12~000~K ~\\
Carbon        & C~II 3918/3920 & H$_{\zeta}$ (3889~\AA), Ca~II~K (3934~\AA)   & blends have well-known $gf$ values, clearly traceable~\\
              &                 & weak Fe~II/Ti~II/S~II                         & blends become weaker with rising $T_{\rm eff}$~\\
              & C~II 4267      & weak Fe~I/Fe~II/S~II                          & blend of 3 C~II lines, C~II becomes stronger with rising $T_{\rm eff}$~\\
              & C~II 6578      & weak Fe~II                                      & C~II becomes stronger with with rising $T_{\rm eff}$~\\
Oxygen        & O~I 7771       & weak Fe~II on red wing                          & O~I triplet, suitable for the determination of $v \sin i$~\\
Neon          & Ne~I 6402      & none                                             & tracer for weak stellar winds, useful $\ga$~11~500~K ~\\
              & Ne~I 6506      & none                                             & tracer for weak stellar winds, useful $\ga$~11~500~K ~\\
Magnesium     & Mg~II 4481     & weak Fe~II                                      & Mg triplet, suitable for the determination of $v \sin i$ ~\\
              &                 & weak He~I (4471~\AA)                           & of minor importance for fast rotators~\\
Silicon       & Si~II 4128/4130& weak Mn~II/Fe~II                               & ~\\
              & Si~II 5041/5ß55& weak Fe~I                                       & ~\\
              & Si~II 6374     & two weak Mg~II lines                            & ~\\
              & Si~II 6371     & one weak Fe~I line                              & ~\\
Calcium       & Ca~II~K 3934  & 31 weak blend lines                              & indicator for diffusion processes ~\\
              &                 &                                                  & K line used for detection of CS gas ~\\
Iron          & Fe~II 4233     & weak Fe~I                                        &  ~\\
              & Fe~II 4584     & weak Ti~II/Cr~II                               & blend of four Fe~II lines ~\\
Strontium     & Sr~II 4077     & weak Fe~I/Si~II                                & diffusion indicator, weaker Sr~II line with rising $T_{\rm eff}$~\\
              & Sr~II 4215     & weak Cr~II/Fe~I                                & diffusion indicator, weaker Sr~II line with rising $T_{\rm eff}$~\\
              & Sr~II 4305     & weak Fe~II/Ti~II                               & diffusion indicator, weaker Sr~II line with rising $T_{\rm eff}$~\\
Barium        & Ba~II 4554     & weak Fe~II/Cr~II/S~II                         & diffusion indicator, weaker Ba~II line with rising $T_{\rm eff}$~\\
\hline
\end{tabular}
\end{table}