\begin{table}%t3
%\centering
\par
\caption{\label{tbl_stats_grades}Statistics of sources with their grades for all seven fields and five bands.}
\begin{tabular}{ccrrrrrr}
\hline\hline \noalign{\smallskip}
Field & Band & Grade A & Grade B & Grade C & Grade D & Not detected  & Total \\
\hline
Bulge 1  & 3.6~$\mu$m & 12~446 (18\%) & 39~177 (57\%) &   183 &   626 & 16~661 & 69~093 \\
& 4.5~$\mu$m & 16~173 (23\%) & 35~598 (52\%) &    85 &   216 & 17~021 &       \\
 & 5.8~$\mu$m & 13~839 (20\%) & 21~757 (31\%) &     1 &   169 & 33~327 &       \\
 & 8.0~$\mu$m & 12~669 (18\%) & 17~044 (25\%) &     7 &    96 & 39~277 &       \\
& 24~$\mu$m  &   577 ( 1\%) &  1197 ( 2\%) &     1 &     2 & 67~316 &       \\
Bulge 2  & 3.6~$\mu$m & 14~889 (25\%) & 30~525 (51\%) &   197 &   748 & 13~963 & 60~322 \\
         & 4.5~$\mu$m & 17~495 (29\%) & 28~190 (47\%) &    72 &   492 & 14~073 &       \\
         & 5.8~$\mu$m & 13~712 (23\%) & 17~900 (30\%) &     0 &   214 & 28~496 &       \\
         & 8.0~$\mu$m & 11~960 (20\%) & 15~752 (26\%) &     1 &   152 & 32~457 &       \\
         & 24~$\mu$m  &   503 ( 1\%) &  1119 ( 2\%) &     4 &     4 & 58~692 &       \\
Bulge 3  & 3.6~$\mu$m & 13~476 (26\%) & 27~927 (53\%) &   131 &   101 & 11~031 & 52~666 \\
         & 4.5~$\mu$m & 16~329 (31\%) & 25~159 (48\%) &    62 &    64 & 11~052 &       \\
         & 5.8~$\mu$m & 12~085 (23\%) & 15~880 (30\%) &     0 &    35 & 24~666 &       \\
         & 8.0~$\mu$m & 10~712 (20\%) & 13~220 (25\%) &     4 &    24 & 28~706 &       \\
         & 24~$\mu$m  &   383 ( 1\%) &   976 ( 2\%) &     1 &     2 & 51~304 &       \\
Bulge 4  & 3.6~$\mu$m & 12~938 (22\%) & 33~046 (57\%) &   136 &   197 & 12~091 & 58~408 \\
         & 4.5~$\mu$m & 15~689 (27\%) & 29~961 (51\%) &    75 &    95 & 12~588 &       \\
         & 5.8~$\mu$m & 11~311 (19\%) & 18~283 (31\%) &     3 &   177 & 28~634 &       \\
         & 8.0~$\mu$m &  9239 (16\%) & 13~588 (23\%) &    19 &    98 & 35~464 &       \\
         & 24~$\mu$m  &   267 ( 0\%) &   817 ( 1\%) &     3 &     4 & 57~317 &       \\
Bulge N~1 & 3.6~$\mu$m & 12~553 (19\%) & 35~826 (55\%) &   198 &   724 & 15~534 & 64~835 \\
         & 4.5~$\mu$m & 15~402 (24\%) & 34~527 (53\%) &    85 &   296 & 14~525 &       \\
         & 5.8~$\mu$m & 11~819 (18\%) & 21~845 (34\%) &     5 &   520 & 30~646 &       \\
         & 8.0~$\mu$m & 12~035 (19\%) & 16~565 (26\%) &    11 &   144 & 36~080 &       \\
         & 24~$\mu$m  &   467 ( 1\%) &  1126 ( 2\%) &     3 &    23 & 63~216 &       \\
Bulge N~2 & 24~$\mu$m  &    21 ( 5\%) &   316 (74\%) &    17 &    74 &     0 &   428 \\
NGC~6522 & 3.6~$\mu$m & 12~430 (26\%) & 24~924 (53\%) &    79 &    55 &  9796 & 47~284 \\
         & 4.5~$\mu$m & 15~637 (33\%) & 21~263 (45\%) &    32 &    21 & 10~331 &       \\
         & 5.8~$\mu$m & 12~011 (25\%) & 11~907 (25\%) &     0 &    30 & 23~336 &       \\
         & 8.0~$\mu$m & 10~263 (22\%) & 10~432 (22\%) &     0 &    12 & 26~577 &       \\
         & 24~$\mu$m  &   431 ( 1\%) &  1152 ( 2\%) &     0 &     0 & 45~701 &       \\
\hline
\end{tabular}
\vspace*{-2.3mm}
\end{table}