\begin{table}%t1
 \caption{\label{obstab}Observation statistics for the selected observatories from 1995 to 2008.}
\small%\centerline
{
\begin{tabular}{lrrccrrrcc}
\hline\hline\noalign{\smallskip}
Site&\multicolumn{3}{c}{Observations\tablefootmark{a}}&\multicolumn{2}{c}{Trojans}&\multicolumn{3}{c}{Area coverage\tablefootmark{b}}&Grid size\\
Code&Total&Trojan&Trojan part [\%]&Observed\tablefootmark{c}&Discovered&Total&Trojan&Trojan part [\%]&Sq. deg.\\
\hline
644 & 3~738~472& 24~977&0.67&1618&141&373~240& 7617&2.0&0.96\\% 388308  7925
691\tablefootmark{d}&  937~706&  7875&0.84&1056&224&
15~378&  221&1.4&0.08\\% 191938  2754
691 & 3~586~484& 17~325&0.48&1640&304&106~741& 4117&3.9&0.78\\% 137241  5294
699 & 5~171~452& 35~695&0.69&1304& 62&475~990&11~121&2.3&1.24\\% 385199  9000
703 & 4~769~603& 15~470&0.32&1053& 27&480~719& 7375&1.5&2.02\\% 238406  3657
704 &22~328~359&133~653&0.60&1634&577&721~336& 7386&1.0&0.25\\%2925418 29955
G96 & 3~393~690& 13~868&0.41&1215&154& 50~814&  933&1.8&0.28\\% 178909  3285
Rest&$\ldots$& 43~356&$\ldots$&1804&414&$\ldots$&$\ldots$&$\ldots$&$\ldots$\\
\hline
\end{tabular}}
\tablefoot{\tablefoottext{a}{The number of reported positions of which each object usually have three or more at every occasion.}\\
\tablefoottext{b}{The number is based on observations and on the assumed grid-sizes of each site and cumulatively counted for each night. In comparison, the half sky is about 20~626 square degrees.}\\
\tablefoottext{c}{The number refer to unique objects.}\\
\tablefoottext{d}{Old instrument configuration.}}
\end{table}