\begin{table}%T2
%\centering
\par
\caption{Blue-to-red phase differences of $f$ and its first harmonic together
with estimates for $\ell$ and $m$ for $f_1, f_2$ and $f_3$ (Telting \& Schrijvers \cite{Teltings97}). The phase
differences $\Delta \Psi$ are given in $\pi$ radians. Due to the bad
quality of the IPS diagnostics associated to  $2f_3$ (see
Fig.~\ref{obsIPS}), we cannot provide information on the $m$-value
 of this mode.}
\label{IPStable}
\begin{tabular}{lllll} \hline\hline
Frequency & $\Delta \Psi_{f}$ & $\Delta \Psi_{2f}$ & $\ell\in$ & $|m|\in$ \\
\hline
$f_1$ & 2.5 & 4.5 & $[2,4]$ & $[0,2]$ \\
$f_2$ & 2.5 & 3 & $[2,4]$ & $[0,2]$ \\
$f_3$ & 3 & -- & $[2,4]$ & -- \\ \hline
\end{tabular}
\end{table}