\begin{table}%t1
\caption{\label{tab:fit}The best fit parameters for the different spectral components for the four spectra.  All wavelengths and velocities refer to the rest frame of NGC~4051. Numbers in square
brackets are calculated from the fit parameters; numbers in round brackets were kept fixed during the fit.} 
\small%\centerline
 {
 \begin{tabular}{lcccc}
\hline
\hline
                                         &  {\it A}               &   {\it B}            &           {\it C}    &    {\it D}            \\
\hline
\multicolumn{5}{l}{\bf Continuum}\\
\multicolumn{5}{l}{$\bullet\ $\textit{power law}}\\
Flux ($2{-}10$~keV)$^a$                    &   $0.83\pm 0.07$ & $1.36\pm 0.08$ & $2.93\pm 0.09$ &  $0.48\pm 0.05$ \\
Photon index $\Gamma$                    &   $1.65\pm 0.07$ & $2.00\pm 0.05$ & $2.24\pm 0.02$ &  $2.44\pm 0.05$ \\
\multicolumn{5}{l}{$\bullet\ $\textit{modified black body}}\\   
Flux ($0.2{-}10$~keV)$^a$                  &   $0.49\pm 0.08$ & $ 0.66\pm0.14$ & $2.0 \pm 0.2 $ &  $0.37\pm 0.09$ \\
$kT$ (eV)                                &   $ 95 \pm  6  $ & $ 96 \pm  8  $ & $143 \pm 4   $ &  $ 90 \pm  5  $ \\
\hline
\multicolumn{5}{l}{\bfseries{Absorption components}}\\
\multicolumn{5}{l}{$\bullet\ $\textit{warm absorber 1}}\\
$N_{\rm H}$ ($10^{25}$~m$^{-2}$)         &        --        &      --        & $0.12\pm 0.04$ &  $  (0.12)    $ \\
$\log\xi$ ($10^{-9}$~W~m)               &        --        &      --        & $0.07\pm 0.13$ &  $ 0.3\pm 0.2 $ \\
$v_{\rm turb}$ (km~s$^{-1}$)            &        --        &      --        & $300 \pm  60 $ &  $  (300)     $ \\
$v_{\rm out}$ (km~s$^{-1}$)             &        --        &      --        & $-210\pm 70  $ &  $  (-210)    $ \\
\multicolumn{5}{l}{$\bullet\ $\textit{warm absorber 2}}\\
$N_{\rm H}$ ($10^{25}$~m$^{-2}$)         &   $  (0.17)    $ & $0.17\pm 0.05$ & $0.29\pm 0.05$ &  $  (0.29)    $ \\
$\log\xi$ ($10^{-9}$~W~m)               &   $0.95\pm 0.25$ & $0.49\pm 0.20$ & $0.87\pm 0.09$ &  $0.52\pm 0.13$ \\
$v_{\rm turb}$ (km~s$^{-1}$)            &   $   (230)    $ & $230 \pm 120 $ & $110 \pm  20 $ &  $   (110)    $ \\
$v_{\rm out}$ (km~s$^{-1}$)             &   $  (-330)    $ & $-330\pm 140 $ & $-200\pm  30 $ &  $    (-200)  $ \\
\multicolumn{5}{l}{$\bullet\ $\textit{warm absorber 3}}\\
$N_{\rm H}$ ($10^{25}$~m$^{-2}$)         &   $   (0.6)    $ & $ 0.6\pm 0.3 $ & $0.8 \pm 0.4 $ &  $  (0.8)     $ \\
$\log\xi$ ($10^{-9}$~W~m)               &   $2.23\pm 0.17$ & $1.98\pm 0.22$ & $2.32\pm 0.13$ &  $2.4^{+0.6}_{-0.2}$\\
$v_{\rm turb}$ (km~s$^{-1}$)            &   $   (100)    $ & $ 100\pm 50  $ & $ 90 \pm  30 $ &  $   (90)     $ \\
$v_{\rm out}$ (km~s$^{-1}$)             &   $ (-610)     $ & $-610\pm 110 $ & $-580\pm 50  $ &  $   (-580)   $ \\
\multicolumn{5}{l}{$\bullet\ $\textit{warm absorber 4}}\\
$N_{\rm H}$ ($10^{25}$~m$^{-2}$)         &   $    (9)     $ & $  9 \pm 5   $ & $ 20 \pm 10  $ &  $   (20)     $ \\
$\log\xi$ ($10^{-9}$~W~m)               &   $3.06\pm 0.10$ & $2.92\pm 0.17$ & $3.19\pm 0.09$ &  $ 3.2\pm 0.2 $ \\
$v_{\rm turb}$ (km~s$^{-1}$)            &   $   (120)    $ & $120 \pm 80  $ & $ 19 \pm  13 $ &  $   (19)     $ \\
$v_{\rm out}$ (km~s$^{-1}$)             &   $ (-4590)    $ & $-4590\pm 180$ & $-4670\pm 150$ &  $  (-4670)   $ \\
\hline
\multicolumn{5}{l}{\bfseries{Emission lines}}\\
\multicolumn{5}{l}{$\bullet\ $\textit{\ion{O}{viii} Ly$\alpha$ (relativistic)$^{b,c}$}} \\
Flux$^d$                                 &   $ 12 \pm 2   $ & $ 22 \pm 5   $ & $ 6.8\pm 1.5 $  & $ 3.5\pm 1.1 $ \\
$q$ (index Laor profile)                 &   $    (5.2)   $ & $ 5.2\pm 0.5 $ & $2.06\pm 0.26$  & $  (2.06)    $ \\
{\it FWHM} (\AA)                               &   $    [10]    $ & $   [10]
$ & $  [3.0]     $  & $  [3.0]     $ \\\hline
&&&& \\[-8pt]
\multicolumn{5}{l}{$\bullet\ $\textit{\ion{O}{viii} Ly$\alpha$ (BLR)$^b$}} \\
Flux$^d$                                 &   $ 0.1\pm 0.2 $ & $ 0.0\pm 0.2 $ & $ 1.8\pm 0.6 $  & $ 0.8\pm 0.4 $ \\
{\it FWHM} (\AA)                               &   $   (0.45)   $ & $  (0.45)    $ & $0.45\pm 0.14$  & $  (0.45)    $ \\
\multicolumn{5}{l}{$\bullet\ $\textit{\ion{O}{vii} triplet (BLR)}} \\
Flux$^d$                                 &   $ 1.4\pm 0.6 $ & $ 0.0\pm 0.7 $ & $ 6.2\pm 1.4 $  & $ 2.2\pm 1.2 $ \\
{\it FWHM} (\AA)                               &   $   (1.7)    $ & $  (1.7)     $ & $ 1.7\pm 0.4 $  & $  (1.7)     $ \\
$\lambda$ (\AA)                          &   $  (22.11)   $ & $ (22.11)    $ & $22.11\pm 0.13$ & $ (22.11)    $ \\
\multicolumn{5}{l}{$\bullet\ $\textit{\ion{O}{vii} forbidden (narrow)}} \\
Flux$^d$                                 &   $0.8 \pm 0.2 $ & $ 0.9\pm 0.2 $ & $ 1.0\pm 0.2 $  & $ 1.3\pm 0.3 $ \\
$\lambda$ (\AA)                          &$22.087\pm 0.005$&$22.081\pm 0.006$&$22.090\pm 0.009$& $  (22.090)  $ \\
\multicolumn{5}{l}{$\bullet\ $\textit{\ion{C}{vi} Ly$\alpha$ (BLR)$^e$}} \\
Flux$^d$                                 &   $ 0.6\pm 0.4 $ & $ 1.0\pm 0.5 $ & $ 2.4\pm 0.8 $  & $ 3.1\pm 0.7 $ \\
{\it FWHM} (\AA)                               &   $   (0.36)   $ & $ (0.36)     $ & $0.36\pm 0.13$  & $  (0.36)    $ \\
\hline
\end{tabular}}
\medskip
$^{a}$ Absorption-corrected flux in 10$^{-14}$~W~m$^{-2}$;
$^{b}$~wavelength is frozen to the rest wavelength of 18.967~\AA\  (for \ion{O}{viii}~Ly$\alpha$); 
$^{c}$~and an inclination angle of 48$^{\circ}$;
$^{d}$~absorption-corrected photon flux in photons~m$^{-2}$~s$^{-1}$;
$^{e}$~wavelength is frozen to the rest wavelength of 33.736~\AA. 
\end{table}