\begin{table}%t1
\caption{Appearance of the first few Lyman lines for the computations not including any
feedback. In particular we give the approximate redshift, $z_{\rm max}$, at
which $\Delta I_\nu(z_{\rm em})$ is maximal (see Fig. \ref{fig:DI_z}), and the
redshift at which the peak of the line reaches the next lower Lyman resonance,
$z_{\rm f}\approx z_{\rm max}~\nu_{{\rm Ly}(n-1)}/\nu_{{\rm Ly}n}$, where
$\nu_{{\rm Ly}k}$ is the resonance frequency of the Lyman-$k$ transition. Also
we give the approximate total number of\protect  escaping photons per hydrogen nucleus for each transition.}
\label{tab:Lyn}
%\centering
\par
\begin{tabular}{@{}lccccc}
\hline
\hline
Line & $n$ & $\nu_{{\rm Ly}n}$ [Hz] & $z_{\rm max}$ & $z_{\rm f}$ &
$N_\gamma/N_{\rm H}$\\
\hline
Lyman-$\alpha$ & 2 & $\pot{2.4674}{15}$ & $1400$ & -- & $\pot{4.3}{-1}$ \\
%
Lyman-$\beta$ & 3 & $\pot{2.9243}{15}$ & $1450$ & $1223$ & $\pot{1.8}{-3}$ \\
%
Lyman-$\gamma$ & 4 & $\pot{3.0842}{15}$ & $1461$ & $1385$ & $\pot{2.9}{-4}$\\
%
Lyman-$\delta$ & 5 & $\pot{3.1583}{15}$ & $1464$ & $1430$ & $\pot{1.3}{-4}$ \\
%
Lyman-$\epsilon$ & 6 & $\pot{3.1985}{15}$ & $1467$ & $1449$ & $\pot{7.9}{-5}$ \\
%
\hline
\end{tabular}
\end{table}