\begin{table}%t1 \caption{\label{tab:IIlimits}Upper limits on the allowed angular frequency range if the II~contamination in the nulled data shall be suppressed by at least a factor of $s$ with respect to the nulled GG term. } %\centerline {\small \begin{tabular}[t]{ccc} \hline\hline Initial bin $i$ & $s=3$ & $s=5$\\ \hline 1 & 1170 & 20 \\ 2 & 3420 & 1470 \\ 3 & 5420 & 2330 \\ 4 & 7960 & 3170 \\ 5 & 11~680 & 4310 \\ 6 & none & 5860 \\ 7 & none & 7960 \\ 8 & none & 13~620 \\ \hline \end{tabular}} \medskip These limitations apply only for orders $q=1$, and only if nulling is not preceded by a suitable II removal technique, as we advocate. The parameters are the same as in Fig.$~$\ref{fig:ps}. Note that in a narrow range around $\ell \sim 100$ the II signal can be close to or slightly above the limit imposed by $s$. \end{table}