\begin{table}%t2
\caption{Detection conditions for water ice bands. Upper layer: Titan tholins. Lower layer: crystalline H$_2$O at 40~K.}\label{T2}
%\centering
\small
\begin{tabular}{c c c c c c}
\hline \hline
$f$ & up-$t$ & up-$d_{\rm e}$ & lo-$d_{\rm e}$ & 3\% det. & 10\% det.\\
\hline
80\% & 50 $\mu$m & 50 $\mu$m & 20$-$200 $\mu$m & yes & yes\\
100\% & 20 $\mu$m & 20 $\mu$m & 20$-$200 $\mu$m & yes & yes\\
100\% & 50 $\mu$m & 50 $\mu$m & 20$-$200 $\mu$m & yes & no\\
100\% & 100 $\mu$m & 100 $\mu$m & 20$-$200 $\mu$m & no & no\\
\hline
\end{tabular}
\end{table}