\begin{table}%t3
\caption{\label{correl_f}Correlation coefficients between the features detected with {\it SNR}~$>$~$20$.}
\par
%\centering
\small
\begin{tabular}{c|cccccccccc}
\hline\hline
&    9.2~$\mu$m & 10.0~$\mu$m   &  11.3~$\mu$m  &  12.5~$\mu$m  &  16.2~$\mu$m  &  21.6~$\mu$m  &  C23   &  25.0~$\mu$m &  C28   &  33.6~$\mu$m  \\ 
\hline
9.2~$\mu$m    &      {\bf 15} &       0.008 &       0.238 &      0.012 &      0.003 &      0.622 &      0.000 &     0.887 &       0.000 &  0.195 \\
10.0~$\mu$m  &  0.187 (14)  &        {\bf 69} &       0.000 &      0.293 &      0.049 &      0.088 &      0.468 &     0.203 &       0.858 &  0.441 \\
11.3~$\mu$m  &  --0.084 (1) &   --0.447 (3) &         {\bf 12} &      0.556 &      0.557 &      0.056 &      0.001 &     0.363 &       0.000 &  0.182 \\
12.5~$\mu$m  &   0.179 (4)  &  0.075 (10)  &  0.042 (2)  &       {\bf 12} &      0.087 &      0.308 &      0.113 &     0.003 &       0.004 &  0.182 \\
16.2~$\mu$m  &   0.211 (6)  & --0.140 (12) &  0.042 (3)  &  0.121 (4) &       {\bf 19} &      0.000 &      0.000 &     0.732 &       0.115 &  0.068 \\
21.6~$\mu$m  &   0.035 (2)  &    0.121 (9)  & --0.135 (1) &  0.072 (2) &  0.253 (5) &      {\bf 10} &      0.053 &     0.025 &       0.025 &  0.963 \\
C23                   &  0.354 (15)  &  0.051 (43)  & 0.244 (11)  &  0.112 (9) & 0.299 (17) & 0.137 (8)  &         {\bf 56} &     0.000 &       0.000 &  0.000 \\
25.0~$\mu$m  &  --0.010 (2) &   0.090 (11)  &  --0.064 (1) &  0.214 (4) &  0.024 (3) & 0.159 (3)  & 0.325 (13) &       {\bf 13} &       0.178 &  0.318 \\
C28                   & 0.260 (13)  &   0.013 (40)  & 0.332 (12)  &  0.202 (10) & 0.112 (13) & 0.158 (8)  & 0.619 (46) & 0.095 (9) &         {\bf 53} &  0.001 \\
33.6~$\mu$m  &  0.092 (6)  &    0.055 (22)  &  0.095 (5)  &   0.095 (5) &  0.129 (8) & --0.003 (3) & 0.288 (23) & 0.071 (5) &  0.233 (21) &    {\bf 28} \\
\hline
\end{tabular}
\end{table}