\begin{table}%t1
\caption{\label{tab:diag}Physical diagnostics for \textit{Fermi} data.}
\small%\centerline
 {
\begin{tabular}{p{0.36\textwidth}|ccc}
\hline\hline
\textbf{Observational constraints}: \\
-- Is there an additional component in the {LAT} spectrum? & no (or very weak) & yes &
 yes (possibly very intense)\\
-- Is the {LAT} lightcurve in GeV range prolonged or delayed compared to {GBM} lightcurve? & yes (tail) & yes (delayed peak) & no (or very short delay)\\
\hline
\textbf{Consequences}: \\
\textit{Radiative processes}:\\
Dominant process in {GBM} range & synchrotron & synchrotron &
	     IC (first peak)\\
Dominant process in {LAT} range & synchrotron + very weak IC & synchrotron + IC &
	     IC (second peak)\\
\textit{Conditions in shocked regions}:\\
Electron distribution & high $\Gamma_{\rm m}$, low $\zeta$ & high
	 $\Gamma_{\rm m}$, low $\zeta$ & moderate
	     $\Gamma_{\rm m}$, $\zeta\to 1$\\
Magnetic field        & high ($\epsilon_{\rm B}\to 1/3$) & low
	 ($\epsilon_{\rm B}\ll 1$) & low ($\epsilon_{\rm B}\ll 1$)\\
\textit{Properties of the relativistic outflow}: \\
Can the Lorentz factor in the outflow be measured from the
 high-energy cutoff (assuming it is due to $\gamma\gamma$ annihilation)? & yes & yes & ? (see text)
\\
\hline
\end{tabular}}
\medskip
These diagnostics are based on the results shown in Sects.~\ref{sec:parameterspace} and~\ref{sec:completegrbs}.
\end{table}