\begin{table}%T3
\caption{Physical parameters of the \zabs = 1.7817, 1.7103 and 1.6838 metal absorbers
toward  \object{HE~0141$-$3932} (\zem = 1.80) derived by the MCI~procedure  
(limits are given at the 1~$\sigma$ level).
}
\label{t3}
%\centerline
{
\begin{tabular}{lccccc}
\hline\hline
%\noalign{\smallskip}
 &\zabs=~1.7817&\multicolumn{2}{c}{\zabs=~1.7103}&
\multicolumn{2}{c}{\zabs=~1.6838}\\
Parameter &  & subsystem~$A$ & subsystem~$B$  &subsystem  $A$  & subsystem~$B$ \\
(1)$^f$ & (2) & (3)$^d$ & (4)$^d$ & (5) & (6) \\
%\noalign{\smallskip}
\hline
%\noalign{\smallskip}
$U_0$& 3.1E--3$^a$ & 9.0E--3 & 3.8E--2 & $\ga\!$2.8E--2 & 1.3E--2$^a$\\
$N_{\rm H}$, \cm& 4.2E17$^a$ & 5.7E18 & 8.6E17 & $\ga\!$3.2E17 & 2.5E18\\
$\sigma_{\rm v}$,~\kms & 20.8$^a$ & 55.0 & 21.0 & 19.2 & 59.0$^a$\\
$\sigma_{\rm y}$& 0.63$^a$ & 0.77 & 0.62 & 0.36 & 0.52$^a$\\
$Z_{\rm C}$&3.4E--4$^a$ & 1.1E--3 & 2.1E--3 & $\la\!$5.2E--4 & 2.9E--4$^a$ \\
$Z_{\rm N}$&$<$1.2E--4 & 3.1E--4 & 3.2E--4 & $\la\!$5.0E--5 & 2.8E--5$^b$\\
$Z_{\rm Mg}$&7.0E--5$^b$ & 1.4E--4 & $\ldots$ & $\ldots$ & $\ldots$\\
$Z_{\rm Al}$&7.0E--6$^b$ & 6.2E--6 & $\ldots$ & $\ldots$ & $\ldots$ \\
$Z_{\rm Si}$&4.3E--5$^a$ & 7.4E--5 & 3.0E--4 & $\la\!$8.5E--5 & 4.8E--5$^a$\\
$Z_{\rm Fe}$& 6.0E--5$^b$ & $\sim$8.0E--4 & $\ldots$ & $\ldots$ & $\ldots$\\
$[Z_{\rm C}]$&$0.14\pm0.08$ &0.65 & 0.94 & $\la\!0.33$ & $0.08\pm0.10$\\
$[Z_{\rm N}]$&$<$0.15 & 0.56 & 0.58 &${\la\!}{-}0.3$ & $-0.48\pm0.15$\\
$[Z_{\rm Mg}]$&$0.30\pm0.10$ & 0.6 & $\ldots$ &$\ldots$ & $\ldots$\\
$[Z_{\rm Al}]$&$0.30\pm0.10$ & 0.3 & $\ldots$ & $\ldots$ & $\ldots$\\
$[Z_{\rm Si}]$&$0.09\pm0.08$ & 0.33 & 0.94 & $\la\!$0.4 & $0.14\pm0.10$\\
$[Z_{\rm Fe}]$&$0.30\pm0.15$ & $\sim$1.5 & $\ldots$ & $\ldots$ & $\ldots$\\
$N$(H~{\sc i}), \cm&$(2.6\pm0.5)$E15 & 1.0E16$^e$ & $(2.6\pm0.5)$E14 &
$(1.1\pm0.2)$E14 & 2.5E15$^e$\\
$N$(C~{\sc ii}), \cm&$(1.64\pm0.08)$E13 & $(1.5\pm0.2)$E14 & $\la\!$1.0E12 &
$\la\!$1.6E11 & $(7.3\pm1.5)$E12 \\
$N$(C~{\sc ii}$^\ast$), \cm&$<$5.0E11 & $<$4.3E12 & $\ldots$ &
$\ldots$ & $<$1.5E12 \\
$N$(Mg~{\sc ii}), \cm&$(1.20\pm0.20)$E11 & $(5.3\pm1.5)$E12 & $\ldots$ &
$\ldots$ & $\ldots$ \\
$N$(Si~{\sc ii}), \cm&$(2.8\pm0.3)$E12 & $(1.2\pm0.1)$E13 & $\ldots$ &
 $\ldots$ & $\ldots$\\
$N$(Si~{\sc ii}$^\ast$), \cm&$<$1.3E11 & $<$2.0E11 & $\ldots$ & 
$\ldots$& $\ldots$ \\
$N$(Fe~{\sc ii}), \cm&$(1.4\pm0.4)$E11 & $(5.5\pm2.0)$E11 & 
$\ldots$ &$\ldots$&$\ldots$\\
$N$(Al~{\sc iii}), \cm &$(3.6\pm1.0)$E11 & $(1.4\pm0.3)$E12 & $\ldots$ &
$\ldots$ & $\ldots$\\
$N$(Si~{\sc iii}), \cm &7.5E12$^c$ & $(5.5\pm0.6)$E13 & $(2.3\pm1.2)$E11 &
$\la\!$8.5E10 & $(7.9\pm0.8)$E12\\
$N$(C~{\sc iv}), \cm &$(2.2\pm0.2)$E13 & $(1.7\pm0.2)$E15 & $(3.4\pm0.3)$E14 &
$(3.4\pm0.2)$E13 & $(2.3\pm0.1)$E14 \\
$N$(Si~{\sc iv}), \cm &$(4.5\pm0.4)$E12 &$(7.7\pm0.8)$E13 & $(1.6\pm0.5)$E12 &
$<$3.0E11 & $(1.2\pm0.1)$E13 \\
$N$(N~{\sc v}), \cm &$<$1.4E12 &$(1.8\pm0.2)$E14 & $(7.7\pm0.8)$E13 &
$(4.5\pm0.5)$E12 & $(1.3\pm0.1)$E13 \\
$\langle T \rangle$, K & 0.8E4 & 1.2E4 & 1.3E4 & 1.8E4 & 1.6E4\\
%\noalign{\smallskip}
\hline
\end{tabular}}
\par
\medskip
$^{a,b}$ Uncertainties: $^a$ ${\sim} 15{-}20\%$, 
and $^b$ $\sim $30\%.\\
$^c$ The value of $N$(\ion{Si}{iii}) is calculated 
on base of other lines.\\
$^d$ Physical parameters ($U_0, N_{\rm H}, \sigma_{\rm v}, 
\sigma_{\rm y}$ and
metallicities) are only illustrative since estimated for the photoionization equilibrium whereas 
the absorption system is in non-equilibrium.\\
$^e$ Estimated under the assumption of constant 
metallicity inside the absorber.\\
$^f$ $Z_{\rm X} = N_{\rm X}/N_{\rm H}$; 
$[Z_{\rm X}] = \log (N_{\rm X}/N_{\rm H}) -
\log (N_{\rm X}/N_{\rm H})_\odot$.
\end{table}