Online Material

$\begin{figure}\begin{tabular}{c} \includegraphics[width=17cm,height=10cm] {nf01.... ... \includegraphics[width=17cm,height=10cm] {nf02.eps}\end{tabular} \end{figure}$

Figure 4: Appendix: From top to bottom, averaged spectra of ``sigma" type cloud, ``zeta" type cloud and HD 2108339. The features published in other papers are marked by segments of straight solid lines without any additional designation. All uncertain features are marked with small asterisks and the new certain features with big asterisks. The unidentified stellar lines are marked with sign #. The wavelength scale in Å

$\begin{figure}\begin{tabular}{c} \includegraphics[width=17cm,height=10cm] {nf03.... ...\ \includegraphics[width=17cm,height=10cm] {nf04.eps}\end{tabular} \end{figure}$

Figure 4: continued

$\begin{figure}\begin{tabular}{c} \includegraphics[width=17cm,height=10cm] {nf05.... ...\ \includegraphics[width=17cm,height=10cm] {nf06.eps}\end{tabular} \end{figure}$

Figure 4: continued

$\begin{figure}\begin{tabular}{c} \includegraphics[width=17cm,height=10cm] {nf07.... ...\ \includegraphics[width=17cm,height=10cm] {nf08.eps}\end{tabular} \end{figure}$

Figure 4: continued

$\begin{figure}\begin{tabular}{c} \includegraphics[width=17cm,height=10cm] {nf09.... ...\ \includegraphics[width=17cm,height=10cm] {nf10.eps}\end{tabular} \end{figure}$

Figure 4: continued

$\begin{figure}\begin{tabular}{c} \includegraphics[width=17cm,height=10cm] {nf11.... ...\ \includegraphics[width=17cm,height=10cm] {nf12.eps}\end{tabular} \end{figure}$

Figure 4: continued

$\begin{figure}\begin{tabular}{c} \includegraphics[width=17cm,height=10cm] {nf13.... ...\ \includegraphics[width=17cm,height=10cm] {nf14.eps}\end{tabular} \end{figure}$

Figure 4: continued

$\begin{figure}\begin{tabular}{c} \includegraphics[width=17cm,height=10cm] {nf15.... ...\ \includegraphics[width=17cm,height=10cm] {nf16.eps}\end{tabular} \end{figure}$

Figure 4: continued

$\begin{figure}\begin{tabular}{c} \includegraphics[width=17cm,height=10cm] {nf17.... ...\ \includegraphics[width=17cm,height=10cm] {nf18.eps}\end{tabular} \end{figure}$

Figure 4: continued

Up: A new survey of 6865 Å)