\begin{table}%t9
\caption{\label{Tab:RR:Maxwl}Fit coefficients for total ground state RR rate coefficients of recombining ions, see Eq.~(\ref{Eq:Fit:RR}), where $v_{(u)}^{\rm [\pm p]}$ denotes $v(u)\times 10^{\pm p}$ with uncertainties given in lower parentheses.}
\par
 {\begin{tabular}{c l l l l l l}   % 7 columns
\hline
\hline \noalign{\smallskip}
&\multicolumn{1}{c}{$A$} &$B$&$T_{0}$ & $T_{1}$&$C$& $T_{2}$
\\
 {\rm Ion}\tablefootmark{a} &
($10^{-11}\;{\rm cm}^{3} {\rm s}^{-1}$) &&
({K})&
({K})&&
({K}) \\
\hline\noalign{\smallskip}
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
% ION           &          A           &          B           &          T0          &          T1          &         C            &           T2
${\rm K}^{+}$   & $4.528^{\rm [+0]}_{(3)}$ & $4.234^{\rm [-1]}_{(2)}$ & $5.931^{\rm [+0]}_{(3)}$ & $2.897^{\rm [+9]}_{(3)}$ & $3.049^{\rm [-1]}_{(4)}$ & $1.645^{\rm [+5]}_{(3)}$ \\
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
%\cline{2-7}
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
${\rm Ca}^{2+}$ & $2.248^{\rm [+1]}_{(4)}$ & $6.605^{\rm [-1]}_{(1)}$ & $6.175^{\rm [+0]}_{(1)}$ & $6.032^{\rm [+6]}_{(1)}$ & $3.158^{\rm [-1]}_{(2)}$ & $2.100^{\rm [+5]}_{(2)}$ \\
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
%\cline{2-7}
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
${\rm Sc}^{3+}$ & $4.196^{\rm [+0]}_{(2)}$ & $2.250^{\rm [-1]}_{(1)}$ & $4.232^{\rm [+2]}_{(1)}$ & $1.110^{\rm [+8]}_{(1)}$ & $3.993^{\rm [-1]}_{(1)}$ & $3.973^{\rm [+5]}_{(3)}$ \\
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
%\cline{2-7}
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
${\rm Ti}^{4+}$ & $3.989^{\rm [+1]}_{(3)}$ & $5.658^{\rm [-1]}_{(2)}$ & $9.517^{\rm [+1]}_{(3)}$ & $4.776^{\rm [+7]}_{(2)}$ & $1.065^{\rm [-1]}_{(4)}$ & $3.534^{\rm [+5]}_{(2)}$ \\
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
%\cline{2-7}
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
${\rm V}^{5+ }$ & $4.193^{\rm [+1]}_{(7)}$ & $5.887^{\rm [-1]}_{(1)}$ & $1.993^{\rm [+2]}_{(6)}$ & $2.207^{\rm [+7]}_{(8)}$ & $9.247^{\rm [-2]}_{(1)}$ & $2.012^{\rm [+5]}_{(7)}$ \\
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
%\cline{2-7}
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
${\rm Cr}^{6+ }$& $5.744^{\rm [+1]}_{(8)}$ & $6.220^{\rm [-1]}_{(1)}$ & $2.282^{\rm [+2]}_{(2)}$ & $2.250^{\rm [+7]}_{(8)}$ & $4.925^{\rm [-2]}_{(1)}$ & $2.948^{\rm [+5]}_{(7)}$ \\
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
%\cline{2-7}
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
${\rm Mn}^{7+ }$& $2.976^{\rm [+1]}_{(5)}$ & $4.838^{\rm [-1]}_{(8)}$ & $1.397^{\rm [+3]}_{(3)}$ & $4.566^{\rm [+7]}_{(8)}$ & $5.863^{\rm [-2]}_{(1)}$ & $1.672^{\rm [+4]}_{(3)}$ \\
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
%\cline{2-7}
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
${\rm Fe}^{8+ }$& $3.341^{\rm [+1]}_{(3)}$ & $4.865^{\rm [-1]}_{(7)}$ & $1.891^{\rm [+3]}_{(7)}$ & $5.181^{\rm [+7]}_{(7)}$ & $5.747^{\rm [-2]}_{(1)}$ & $2.734^{\rm [+4]}_{(9)}$ \\
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
%\cline{2-7}
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
${\rm Co}^{9+ }$& $2.542^{\rm [+1]}_{(3)}$ & $3.600^{\rm [-1]}_{(6)}$ & $5.026^{\rm [+3]}_{(4)}$ & $5.480^{\rm [+7]}_{(1)}$ & $1.142^{\rm [-1]}_{(3)}$ & $2.509^{\rm [+4]}_{(1)}$ \\
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
%\cline{2-7}
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
${\rm Ni}^{10+}$& $3.076^{\rm [+1]}_{(2)}$ & $3.849^{\rm [-1]}_{(1)}$ & $5.284^{\rm [+3]}_{(4)}$ & $4.945^{\rm [+7]}_{(1)}$ & $1.021^{\rm [-1]}_{(1)}$ & $2.571^{\rm [+4]}_{(1)}$ \\
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
%\cline{2-7}
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
${\rm Cu}^{11+}$& $3.527^{\rm [+1]}_{(4)}$ & $4.052^{\rm [-1]}_{(3)}$ & $5.855^{\rm [+3]}_{(1)}$ & $5.691^{\rm [+7]}_{(1)}$ & $8.842^{\rm [-2]}_{(1)}$ & $3.626^{\rm [+4]}_{(1)}$ \\
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
%\cline{2-7}
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
${\rm Zn}^{12+}$& $3.964^{\rm [+1]}_{(2)}$ & $4.107^{\rm [-1]}_{(3)}$ & $6.576^{\rm [+3]}_{(1)}$ & $5.855^{\rm [+7]}_{(1)}$ & $8.595^{\rm [-2]}_{(1)}$ & $3.942^{\rm [+4]}_{(3)}$ \\
%\multicolumn{7}{c}{\vspace*{-2mm}} \\
\hline
\end{tabular}}
\tablefoot {\tablefoottext{a}{present work: $\ell\leq 200$, $\;3\leq n\leq 1000$.}}
\end{table}