\begin{table}%t5 \caption{\label{table:c18oprop}The number and properties of the (foreground) layers for the fields of LFAM~26, IRS~44 and WL~19 in the Ophiuchus ridge and IRS~37 and IRS~4, located near Oph-B cores, see Fig.~\ref{Fig:spec3}.} \small%\centerline { \begin{tabular}{l l l l l l} \hline \hline %&&&&&&& \\[-8pt] Field & Position &Nr.\ comp & $V_{\rm{LSR}}$ (km s$^{-1}$) & C$^{18}$O $\int T_{\rm{MB}}{\rm d}V$ (K km s$^{-1}$) & $\Delta V$ (km s$^{-1}$)\\ %&&&&&&& \\[-8pt] \hline LFAM 26 & 0, 0 & 3 & 3.5, 4.4, 5.0 & 1.8, 0.9, 1.1 & 0.8, 0.7, 0.8\\ & --20, +35 & 4 & 2.7, 3.5, 4.4, 5.0 & 0.6, 1.5, 0.8, 1.1 & 0.9, 0.7, 0.7, 0.7 \\ & +35, --22 & 3 & 3.5, 4.4, 5.0 & 1.3, 0.4, 0.5, 1.2, 0.7, 0.5\\ IRS 44 & 0, 0 $^a$& 3 & 2.6, 3.5, 4.5 & 0.5, 2.3, 2.3 & 1.9, 1.1, 0.8\\ & +20, +20 (IRS 46) & 2 & 3.5, 4.3 & 1.9, 1.3 & 0.6, 0.5\\ & --50, 20 & 2 & 3.3, 4.0 & 1.1, 2.5 & 0.4, 1.1\\ IRS 48 & 0, 0 &3 & 2.8, 3.5, 4.1 & 0.6, 1.7, 2.6 & 0.6, 0.4, 0.5 \\ & --36, +36 & 3 & 2.9, 3.5, 4.1 & 0.8, 2.1, 4.3 & 0.4, 0.4, 0.5 \\ & +38, 6 & 3 & 2.8, 3.5, 4.1 & 0.4, 1.1, 3.5 & 0.3, 0.5, 0.5 \\ WL 19 & 0, 0 & 2& 3.3, 4.6 & 2.7, 4.7 & 0.8, 0.8 \\ & --6, 36 & 2& 3.4, 4.6 & 2.8, 5.6, 1.1, 0.8\\ & --20, --38 & 2 & 3.2, 4.2 & 1.9, 3.0 & 0.7, 1.0 \\ & --50, 50 & 4 & 2.6, 3.5, 4.3, 5.1 & 1.4, 3.3, 3.5, 3.2 &0.5, 0.6, 0.7, 0.7\\ IRS 37 & 0, 0 & 2 & 3.0, 4.4 & 2.3, 5.6 & 0.7, 1.1\\ & +23, +7 (WL3) & 2 & 3.2, 4.4 & 2.7, 5.4 & 0.8, 1.0\\ & --36, 21 & 3 & 3.0, 3.6, 4.2 & 2.4, 0.8, 2.8 & 0.9, 0.2, 0.8 \\ \hline \end{tabular}} \smallskip $^a$ An outflow is detected at 0,~0 in HCO$^+$~4$-$3 which is probably the component seen at~2.6~km~s$^{-1}$. \end{table}