\begin{table}%t1 %\centering \par %\centering \par %\begin{minipage}[c]{\columnwidth} % % Cambia el alto de la fila, en porcentaje \caption{\label{NIRcat}Number of periodic variables from Paper~I with a near-infrared counterpart.} %\addtolength{\tabcolsep}{0.2pt} %\addtolength{\tabcolsep}{7pt} \begin{tabular}{ccc} \hline\hline\noalign{\smallskip} &\multicolumn{2}{c}{Periodic variables} \\ \hline &At least one band & All {\it JHK} bands\\ \hline UKIDSS & 419 & 210\\ VLT & 113 & 113\\ 2MASS & 684 & 409\tablefootmark{a}\\ \hline \end{tabular} \tablefoot{\tablefoottext{a}{684 periodic variables in our sample have 2MASS {\it JHK} colors, but since UKIDSS and VLT data have higher priority than 2MASS, 2MASS colors have been used only for the 409 objects without UKIDSS and VLT data.}} \end{table}