\begin{table}%t7
\caption{Radial velocity measurements (in km s$^{-1}$)
associated to the \ion{Na}{i}D (5889.95 and
5895.92~\AA) and \ion{K}{i} (7698.97~\AA) lines detected in the
post-AGB stars of our sample.}\label{tb:velest2}
\small%\centerline
{
\begin{tabular}{lcccccc}\hline\hline
 & \multicolumn{2}{c}{\ion{K}{i}~7699~\AA} & \multicolumn{2}{c}{\ion{Na}{i} 5890~\AA} & \multicolumn{2}{c}{\ion{Na}{i} 5896~\AA} \\
IRAS name &   emission  &   absorption  &   emission  &   absorption  &   emission  &   absorption  \\
\hline
 01005$+$7910 $^*$& n.d. &   1,  $-$6  &   20  &   $-$65, $-$41, $-$1    &   21  &   $-$65, $-$42, $-$1    \\
 02229$+$6208   & n.d. &   12,  29 & n.d. &   $-$2,  25 & n.d. &   $-$2,  24 \\
 04296$+$3429 $^*$&   $-$7  &   $-$18,  58    &   21  &   $-$17,  6,  56    &   21  &   $-$16,  6,   56   \\
 05113$+$1347 $^*$& n.d. &   $-$17,  2 &   $-$44 &   $-$17,   6    &   $-$43 &   $-$18,  5 \\
 05251$-$1244   & n.d. &   6   & n.d. &   4,  $-$11 & n.d. &   5,  $-$11 \\
 05341$+$0852   & n.d. &   14  &   23  &   21  &   23  &   21  \\
 06530$-$0213   &    --   &   -- & n.d. &   25,  47 & n.d. &   25,  46 \\
 07134$+$1005   & n.d. &   93  & n.d. &   29, 39, 91  & n.d. &   28, 40, 92  \\
 08005$-$2356 $^*$& n.d. &   24, $-$8, 48  &   $-$30 &   $-$47,  19    &   $-$30 &   $-$52,  17    \\
 08143$-$4406   & n.d. &   19, 4, 35   & n.d. &   16, 42, 61  & n.d. &   17, 42, 61  \\
 08544$-$4431   & n.d. &   27  & n.d. &   $-$42, 15, 39 & n.d. &   $-$41, 16, 43 \\
 12175$-$5338   & n.d. &   $-$5  &   31  &   $-$27, $-$6, 31 &   32  &   $-$27, $-$5, 32 \\
 16594$-$4656 $^*$& n.d. &   $-$10, $-$41, 5 &   14  &   $-$29, 6  &   13  &   $-$29, 8  \\
 17086$-$2403 $^*$& n.d. &   12  &   $-$6  &   17  &   $-$5  &   14  \\
 17097$-$3210   & n.d. &   5   & n.d. &   $-$29, 3  & n.d. &   $-$29, 3  \\
 17150$-$3224   &   10, 21, 2   & n.d. &   10  &   5   &   10  &   2   \\
 17245$-$3951   &   $-$1,  27 &   $-$86,  $-$57   &   19  &   $-$98, $-$63, $-$31   &   19  &   $-$98, $-$66, $-$31    \\
 17395$-$0841   & n.d. &   17,  3  &   2   &   $-$1  &   3   &   $-$2  \\
 17423$-$1755   & n.d. &   11  &   3, 72   & n.d. &   3, 71   &  n.d.     \\
 17436$+$5003   & n.d. &   $-$50 & n.d. &   $-$66, $-$19    & n.d. &   $-$65, $-$19    \\
 18025$-$3906   & n.d. &   $-$89,  $-$73   & n.d. &   $-$121, $-$34, 8    & n.d. &   $-$121, $-$31, 10   \\
 18062$+$2410   &   --    &  --  &   75  &   3, 20   &   67  &   3, 13   \\
 HD 172324      & n.d. &   6   & n.d. &   $-$28, 7  & n.d. &   $-$28, 8  \\
 19114$+$0002   & n.d. &   10, 67, 83  & n.d. &   11, 64, 127 & n.d. &   12, 65, 123 \\
 19200$+$3457   &    --   &   --  &   6   &   8   &   7   &   9   \\
 19386$+$0155   & n.d. &   10  &   --    &  --  &    --   &   --  \\
 19500$-$1709   & n.d. &   4, 22, $-$9   & n.d. &   2, 12, 20   & n.d. &   2, 14, 22   \\
 20000$+$3239   & n.d. &   2,  13  & n.d. &   $-$2,   21    & n.d. &   2,   21 \\
 20462$+$3416   & n.d. &   $-$21,  $-$8    & n.d. &   $-$25, $-$6, 19 & n.d. &   $-$26, $-$7, 17 \\
 22023$+$5249   & n.d. &   $-$23 &   27, $-$130    &   $-$46, 2  &   27, $-$131    &   $-$46, 4  \\
 22223$+$4327   & n.d. &   $-$2, $-$30, $-$43    & n.d. &   $-$42, $-$18, 0  & n.d. &   $-$44, $-$18, 0  \\
 22272$+$5435   & n.d. &   $-$41 & n.d. &   $-$41, $-$4   & n.d. &   $-$41, $-$4   \\
 23304$+$6147 $^*$& n.d. &   $-$1, $-$12, $-$29    &   24  &   $-$52,   $-$29,  $-$7 &   24  &   $-$53,   $-$29,  $-$7 \\
\hline\end{tabular}}\smallskip
  $^*$: Emission over absorption; --:
spectral range not covered; n.d.: non detected.
\end{table}