\begin{table}%t2
\caption{\label{tab:epochs_and_seasons_per_field}SNLS/DEEP and Landolt field observations.}
\small%\centerline
 {
\begin{tabular}{c|c|cccc}
\hline
\hline
 Field &  Seasons     & \multicolumn{4}{c}{Number of epochs}  \\
       &              & \multicolumn{4}{c}{photometric/total}  \\
       &              & $\gme$ & $\rme$ & $\ime$ & $\zme$     \\
\hline
D1      &  3.5  & 28/57 & 32/88 & 36/99  & 19/47 \\
D2      &  3    & 13/44 & 21/63 & 25/66  & 19/26 \\
D3      &  4    & 29/66 & 34/87 & 40/96  & 10/40 \\
D4      &  4    & 30/67 & 34/97 & 29/100 & 19/55 \\
\hline
Landolt $^{a}$ & --    & 313 &  311 &  283  &  240    \\
\hline
\end{tabular}}
\medskip
$^{a}$ All \citet{Landolt92} fields taken together (two to three Landolt fields may be observed each night).
\end{table}