\begin{table}%t10
\par
\caption{\label{tab:grade_nomatch}Grade distributions of candidates in either a shallow or a deep catalogue.}
\begin{tabular}{lrrrr}
\hline\hline
Catalogue & A & B & C & D \\ %& total \\
\hline
Shallow $i'$ not deep & 3 (25\%) & 6 (50\%) & 3 (25\%) & 0 (0\%) \\ %& 12\\
Deep $i'$ not shallow & 6 (26\%) & 3 (13\%) & 10 (43\%) & 4 (17\%) \\ %& 24\\
Shallow $z'$ not deep & 3 (13\%) & 9 (37\%) & 12 (50\% & 0 (0\%) \\ %& 23\\
Deep $z'$ not shallow & 4 (4\%) & 14 (15\%) & 70 (77\%) & 3 (3\%) \\  
\hline
\end{tabular}
\end{table}