\begin{table}%t2
\caption{\label{tab:resolpdf}Standard deviations of the density PDFs as a function of numerical resolution for solenoidal and compressive forcing shown in Fig.~\ref{fig:resolpdf}.}
\par
%\centering
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\begin{tabular}{lcccc}
\hline
\hline\noalign{\smallskip}
Grid resolution & \multicolumn{2}{c}{Solenoidal forcing} & \multicolumn{2}{c}{Compressive forcing}\\
\hline
~ & $\sigma_\rho$ & $\sigma_s$ & $\sigma_\rho$ & $\sigma_s$\\
$\phantom{1}256^3$~\mydotfill  & $1.79\pm0.08$ & $1.36\pm0.07$ & $5.66\pm0.79$ & $3.09\pm0.21$\\
$\phantom{1}512^3$~\mydotfill  & $1.89\pm0.10$ & $1.35\pm0.05$ & $5.59\pm0.67$ & $3.15\pm0.34$\\
$1024^3$~\mydotfill & $1.89\pm0.09$ & $1.32\pm0.06$ & $5.86\pm0.96$ & $3.04\pm0.24$\\
\hline
\end{tabular}
\vspace*{-3mm}\end{table}