\begin{table}
%\centering
\par
\small
\begin{tabular}{@{}lrrrrrrrr@{}}
\hline\hline
               \multicolumn{9}{c}{HDEGs}\\
\hline
  Index        & \multicolumn{1}{c}{$a\pm\sigma(a)$}&\multicolumn{1}{c}{$b\pm\sigma(b)$}&\multicolumn{1}{c}{$\alpha$}&
 \multicolumn{1}{c}{$N$}
  &\multicolumn{1}{c}{$t$}&\multicolumn{1}{c}{$\sigma_{\rm std}$}&
 \multicolumn{1}{c}{$\sigma_{\rm exp}$}&\multicolumn{1}{c}{$\sigma_{\rm res}$}\\
\hline
 D4000$'$      &$ 0.397\pm0.019$&$ 0.203\pm0.008$ & 0.071  & 36 &  23.87  &  0.098 & 0.014&
 0.097\\
H$\delta'_{A}$ &$ 0.098\pm0.018$&$-0.061\pm0.009$ & 1.00E-04  & 36 &   7.03  &  0.018 & 0.008&
0.017\\
H$\delta'_{F}$ &$ 0.100\pm0.020$5&$-0.033\pm0.009$ & 0.010  & 36 &   3.59  &  0.015 & 0.008&
0.013\\
CN$_{2}$       &$-0.303\pm0.043$&$ 0.177\pm0.020$ & 1.44E-10& 36 &   8.81  &  0.034 & 0.013& 0.031\\
Ca4227$'$      &$ 0.035\pm0.023$&$ 0.026\pm0.010$ & 0.125  & 36 &   2.51  &  0.011 & 0.008& 0.007\\
G4300$'$       &$ 0.093\pm0.021$&$ 0.033\pm0.010$ & 0.002  & 36 &   3.41  &  0.016 & 0.006& 0.014\\
H$\gamma'_{A}$ &$-0.001\pm0.026$&$-0.055\pm0.012$ & 0.020  & 36 &   4.70  &  0.016 & 0.006&
0.015\\
H$\gamma'_{F}$ &$ 0.122\pm0.030$&$-0.080\pm0.013$ & 3.00E-04  & 36 &   5.95  &  0.017 & 0.070&
0.016\\
Fe4383$'$      &$ 0.038\pm0.023$&$ 0.033\pm0.010$ & 0.006  & 36 &   3.29  &  0.007 & 0.005&
0.005\\
Ca4455$'$      &$ 0.032\pm0.014$&$ 0.018\pm0.006$ & 0.011  & 36 &   2.87  & 0.006 & 0.005& 0.002\\
Fe4531$'$      &$ 0.036\pm0.012$0&$ 0.020\pm0.005$ & 5.0E-04  & 36 &   3.70  &  0.006 & 0.005& 0.0027\\
Fe4668$'$      &$-0.071\pm0.018$&$ 0.067\pm0.008$ & 2.19E-09& 36 &   8.25  &  0.012 & 0.006&
0.010\\
H$\beta'$      &$ 0.087\pm0.009$&$-0.012\pm0.004$ & 0.189  & 36 &   2.85  &  0.009 & 0.004&
0.008\\
Fe5015$'$      &$ 0.025\pm0.011$&$ 0.021\pm0.005$ & 1.46E-05& 36 &   4.38  &  0.004 & 0.003&
0.002\\
Mgb$'$         &$-0.050\pm0.019$&$ 0.091\pm0.008$ & 3.15E-10& 36 &  10.96  &  0.009 & 0.004& 0.008\\
Fe5270$'$      &$ 0.027\pm0.007$&$ 0.024\pm0.003$ & 0.001  & 36 &   7.27  &  0.004 & 0.004&
0.001\\
Fe5335$'$      &$-0.001\pm0.013$&$ 0.035\pm0.006$ & 1.79E-05& 36 &   6.02  &  0.004 & 0.004& 0.000\\
 \hline
\end{tabular}
\end{table}