\begin{table}%t2
%\centering
\par
\caption{\label{env_coeff}Coefficients of the envelope curves (with the formal errors given in
parentheses below the respective coefficient).}
\small
\begin{tabular}{lr@{\hskip1mm}r@{\hskip1mm}r@{\hskip1mm}r@{\hskip1mm}r@{\hskip1mm}rcr@{\hskip1mm}r@{\hskip1mm}r@{\hskip1mm}r@{\hskip1mm}r@{\hskip1mm}r}
\hline\hline
%\noalign{\smallskip}
 & $c_0$ & $c_1$ & $c_2$ & $c_3$ &  $c_4$ & $c_5$ & & $c_0$ & $c_1$ & $c_2$ & $c_3$ & $c_4$ & $c_5$\\
%\noalign{\smallskip}
\cline{2-7} \cline{9-14}
%\noalign{\smallskip}
& \multicolumn{6}{c}{$\log P < 1.02$} & & \multicolumn{6}{c}{$\log P > 1.02$} \\
%\noalign{\smallskip}
\hline
%\noalign{\smallskip}
$U$ & $-$126.5 & 936.3 & $-$2712.3 & 3882.8 & $-$2742.4 & 763.8 & & 241.7 & $-$1209.8 & 2267.4 & $-$2024.2 & 873.9 & $-$147.3\\
& (75.6) & (525.7) & (1439.9) & (1941.5) & (1290.6) & (338.7) & & (1538.1) & (6254.0) & (10110.7) & (8132.8) & (3251.2) & (517.7) \\[0.8ex]
$B$ & $-$95.4 & 726.8 & $-$2151.1 & 3128.6 & $-$2233.6 & 625.9 & & $-$979.8 & 3783.1 & $-$5836.3 & 4503.0  & $-$1736.4 & 267.5 \\
& (26.2) & (189.8) & (539.1) & (752.3) & (516.3) & (139.5) & & (2003.3) & (8383.5) & (13983.4) & (11612.6) &(4796.2) & (789.7) \\[0.8ex]
$V$ & $-$46.7 & 364.5 & $-$1099.0 & 1629.0 & $-$1184.9 & 337.9 & & $-$885.1 & 3461.5 & $-$5396.1 & 4194.3 & $-$1624.5 & 250.7 \\
& (12.3) & (91.2) & (265.1) & (378.6) & (265.7) & (73.3) & & (1594.3) & (6656.8)& (11072.6) & (9166.6) & (3778.5) & (620.2) \\[0.8ex]
$R_{\rm C}$ & $-$37.8 & 302.2 & $-$928.7 & 1396.9 & $-$1027.7 & 295.7 & & $-$750.6 & 2902.9 & $-$4466.9 & 3420.9 & $-$1303.2 &  197.5\\
& (12.8) & (94.2) & (272.7) & (386.7) & (269.2) & (73.6) & & (505.6) & (2050.6) & (3308.8) & (2656.5) &(1060.7)& (168.5) \\[0.8ex]
$I_{\rm C}$ & $-$37.6 & 282.2 & $-$822.3 & 1179.8 & $-$832.7 & 231.1 & & $-$579.8 & 2266.9 & $-$3531.1 & 2741.5 & $-$1060.3 & 163.4 \\
& (9.0) & (65.9) & (188.2) & (264.3) & (182.4) & (49.5) & & (505.5) & (2075.3) & (3390.8) & (2756.8) & (1114.6)& (179.2) \\[0.8ex]
$V_{\rm RAD}$ & $-$2074 & 15367 & $-$44551 & 64191 & $-$45746 & 12855 & & $-$11217 & 41017 &$-$59974 & 44053 & $-$16236 & 2397 \\
& (2083) & (14664) & (40690) & (55672) & (37584) & (10010) & & (41150) & (167648) & (271723) & (219110) & (87922) & (14035) \\
%\noalign{\smallskip}
\hline
\end{tabular}
\end{table}