\begin{table}%t1 %\centering \par \caption {\label{surveyparam}Summary of the parameters included in our simulations. For each entry, we give the range of values explored and reference to the relevant publication. } %\centerline {\begin{tabular}{llllll} \hline\hline \noalign{\smallskip} Parameter & Explored range &&&& Reference\\ \hline LF (a) & ($\langle z\rangle=6.0$) & $\alpha=1.6$, & $\phi^*=0.4\times 10^{-3}$~Mpc$^{-3}$, & $M^*=-21.07$ & \citet{Beckwith06} \\ LF (b) & ($\langle z\rangle=5.9$) & $\alpha=1.74$, & $\phi^*=1.1\ 10^{-3}$ Mpc$^{-3}$, & $M^*=-20.24$ & \citet{Bouwens08}\\ LF (c) & ($3.8