\begin{table}%t1
\caption{\label{taboss}Physical and observational parameters of the 6 HFP galaxies
  observed with WSRT. Columns~1,~2: source names; 
  Col.~3: projected linear sizes (Orienti et~al. 2006); Col.~4:
  optical redshift; Col.~5: central frequency; Col.~6: channel
  resolution; Col.~7: 1$\sigma$ noise level in  the line cube;
  Col.~8: continuum flux density taken from our WSRT data at the
  observed frequency; Col.~9: peak flux
  density of the absorption line, measured on the spectral image; Col.~10:
  optical depth; Col.~11: the width of the \HI~absorption line: for
  \object{J0111+3906} the {\it FWHM} is given, in the case of \object{OQ~208} we give the {\it FWZI}, due to
  the complexity of the line profile; Col.~12: \HI~column density derived
  from 
  $N_{\rm \HI} = 1.82 \times 10^{18} T_{\rm spin} \tau_{\rm peak} \Delta V $~cm$^{-2}$, a $T_{\rm spin}$ of~100~K has been assumed; Col.~13:
  the redshift of the peak \HI~absorption. 
  The line flux density, the optical depth and the \HI~column
  density upper limits have been computed assuming the 2$\sigma$~noise level,
  a line width of~100~km~s$^{-1}$ and~$T_{\rm spin}$ of~100~K, as in Vermeulen
  et~al. (\cite{rv03}).
  $a$: For the source \object{J0111+3906}, the projected linear
  size is taken from Owsianik et~al. (\cite{ocp98}).} 
%\centering
\par
\begin{tabular}{ccccccccccccc}
\hline
\hline
Source    &Other   &LS&$z_{\rm opt}$&$ \nu_{\rm obs}$ &
Resol.&rms&$S_{\rm obs}$&$S_{\rm HI}$&$\tau_{\rm peak}$&$\Delta v$&Log($N_{\rm
    HI}$)&$z_{\rm HI,peak}$\\
J2000     &name    &pc& &MHz&km s$^{-1}$&mJy/b/ch &mJy&mJy& &km s$^{-1}$& & \\
(1)       &(2)  & (3) &(4)&(5)&(6)&(7)&(8)&(9)&(10)&(11)&(12)&(13)\\
\hline
\object{J0003+2129}&        &22&0.452&977.96&4.3&6.1&50&$<$12.2&$<$0.15& &$<$21.43& \\
\object{J0111+3906}&\object{OC~314}&22$^{a}$&0.668&851.32&6.9&2.8&170&52.7&0.44&100&21.90&0.6687 \\
\object{J0655+4100}&        &$<$1&0.02156&1390.03&4.3&0.7&239&$<$1.4&$<$0.006& &$<$20.0& \\
\object{J1407+2827}&\object{OQ~208} &10&0.0773&1318.60&4.5&1.1&826&5&0.005&1800&20.9&0.0769\\
\object{J1511+0518}&        &7&0.084&1309.96&9.5&1.1&80&$<$2.2&$<$0.02& &$<$20.6&\\
\object{J1623+6624}&        &$<$1&0.203&1180.38&4.5&0.7&129&$<$1.4&$<$0.01& &$<$20.3&\\
\hline
\end{tabular}
\end{table}