\begin{table}%t2 \caption{\label{tab2}Polarization measurements.} % title of Table %\centerline { % used for centering table \begin{tabular}{l l l l l l } % centered columns (4 columns) \hline\hline % inserts double horizontal lines Object &${\it SpT}$ &Filter & Exposure time & D(p) & $\theta$ \\ % table heading & & & (s) & (\%)& (degrees) \\ \hline 2MASSW J1438082+640836 & M9.5 & $I$ & 90 & 0.482 $\pm$ 0.071 & 66.24 \\ & & $R$ & 300 & 0.54 $\pm$ 0.097 & 115\\ 2MASSW J1507476-162738 & L5 & $I$ & 150 & 0.0 $\pm$ 0.036 & \ldots \\ % inserting body of the table & & $R$ &300 & 0.216 $\pm$ 0.022 & 100.26 \\ 2MASS J17312974+2721233 & L0 & $I$ & 60 & 5.195 $\pm$ 0.854 & 52.57 \\ & & $R$ & 240 & 0.666 $\pm$ 0.169 & 111.08\\ 2MASSI J1807159+501531 & L1.5 & $I$ & 60 & 0.711 $\pm$ 0.142 & 46.67 \\ & & $R$ & 120 & 1.669 $\pm$ 0.605& 101.2 \\ \hline %inserts single line \end{tabular}} \par \smallskip Note: {the uncertainty in $\theta$ due to calibration errors is about 1.2~degrees.} \end{table}