\begin{table}%t3
\caption{For each target, the first row lists the minimum number
density for $n_{{\rm H_2}}$ in cm$^{-3}$ as derived using
Eq.~(\ref{Eqcol}) at $T_{{\rm kin}}$~$=$ $300$~K and the second row
gives the corresponding maximum radius for the emission regions
obtained using the GASTRoNOoM-code. The third row gives the maximum
radius for the emitting region calculated using Eq.~(\ref{Eqrad}).}
  \label{Table_NH2} 
%\centering
\small 
\begin{tabular}{llccc}
\hline
\hline
 & & SiO & HCN & CS \\
\hline
%&&&& \\[-8pt]
 & $n_{{\rm H_2}}$ & $ 5.0 \times 10^6$ & $ 4.4 \times
10^6$ & $9.0 \times 10^5$ \\
WX Psc & $R$ (Eq.~(\ref{Eqcol})) & $ 17$~$R_*$ &
$ 19$~$R_*$ & $ 33$~$R_*$ \\
 & $R$ (Eq.~(\ref{Eqrad})) & $ 4.5$~$R_*$ &
$ 6$~$R_*$ & $ 7.5$~$R_*$\\
\hline
%&&&& \\[-8pt]
 & $n_{{\rm H_2}}$ & $ 2.1 \times 10^6$ & $ 2.1 \times
10^6$ & $ 6.34 \times 10^5$ \\
W Aql & $R$ (Eq.~(\ref{Eqcol})) & $ 40$~$R_*$ & $ 40$~$R_*$ &
$ 70$~$R_*$ \\
 & $R$ (Eq.~(\ref{Eqrad})) & $ 9$~$R_*$ & $ 10$~$R_*$ & $ 11$~$R_*$\\
\hline
%&&&& \\[-8pt]
  & $n_{{\rm H_2}}$ & $ 2.7 \times 10^7$ & $ 1.3  \times
10^6$ & $ 7.6 \times 10^5$ \\
II Lup & $R$ (Eq.~(\ref{Eqcol})) & $ 13$~$R_*$ & $ 53$~$R_*$ &
$ 70$~$R_*$ \\
 & $R$ (Eq.~(\ref{Eqrad})) & $ 2.5$~$R_*$ & $ 13$~$R_*$ & $
10$~$R_*$\\  
\hline
%&&&& \\[-8pt]
 & $n_{{\rm H_2}}$ & $ 2.8 \times 10^7$ & $ 8.7 \times 10^6$ & \\
V Cyg & $R$ (Eq.~(\ref{Eqcol})) & $ 5$~$R_*$ & $ 9$~$R_*$ &  \\
 & $R$ (Eq.~(\ref{Eqrad})) &  & $ 4$~$R_*$ & \\
\hline
\end{tabular}
\end{table}