\begin{table}%t2
\caption{\label{tab2}Measured equivalent widths of interstellar features.}
\par
\small%\centerline
 {
\begin{tabular}{rlrrrrrrrrr}
\hline\hline
&       &           & OH        & OH            &   CH      &   CH          &  CH$^{+}$         & CH$^{+}$ & CN & CN\\
HD/Obs      &   Sp/L    &   $E(B-V)$  &   $W$(3078)         &   $W$(3082)         &   $W$(3886)         &   $W$(3890)         &   $W$(3957)         &   $W$(4232)         &   $W$(R1)           &   $W$(R0)           \\
& & & [m\AA] & [m\AA] & [m\AA] & [m\AA] & [m\AA] & [m\AA] & [m\AA] & [m\AA]\\
\hline
23180   B   &   B1III   &   0.27    &  3.50    $\pm$  1.10$^{a}$ &                         &  4.51    $\pm$   0.56   &    3.29    $\pm$   0.45    &   4.30    $\pm$   0.30    &   5.80   $\pm$  0.28      &   1.92    $\pm$   0.30    &       5.40  $\pm$   0.33    \\
24398   B   &   B1Iab   &   0.29    &  1.67    $\pm$   0.08$^{b}$& 1.11    $\pm$   0.05$^{b}$    &   4.96   $\pm$   0.50   &    3.01    $\pm$   0.38    &   1.92 $\pm$ 0.87        &    3.90   $\pm$  0.50      &   3.43    $\pm$   0.54    &       9.01 $\pm$   0.50    \\
27778   B   &   B3V     &   0.37    &  5.30    $\pm$   0.15$^{b}$& 2.20    $\pm$   0.10$^{b}$    &   9.75  $\pm$   0.78    &    4.82    $\pm$   0.64    &   4.90    $\pm$   0.30    &   9.30    $\pm$ 0.30       &   3.38   $\pm$   1.97    &   10.48   $\pm$   2.44$^{x}$    \\
34078   G/B &   O9.5Ve  &   0.49    &  1.72    $\pm$   0.27$^{c}$& 0.86    $\pm$   0.21$^{c}$    &   16.75  $\pm$   1.30   &    11.28 $\pm$   0.50      &   27.80 $\pm$   2.64   & 43.05 $\pm$   2.65  & 2.73 $\pm$   0.32  & 5.72 $\pm$   0.21 \\
147889  u   &   B2III/IV&   1.02    &  12.48    $\pm$   1.74    &  7.52    $\pm$   1.68     &   20.07  $\pm$ 1.20      &  15.02  $\pm$ 0.98       &   16.07  $\pm$   0.93$^{x}$    &    24.37  $\pm$  0.82  &  2.71 $\pm$ 0.40         & 4.46 $\pm$ 0.70$^{x}$ \\
148688  u   &   B1Ia    &   0.55    &   0.92    $\pm$   0.45    &   0.81    $\pm$   0.54   &   3.83   $\pm$   0.20    &   2.75    $\pm$   0.20    &   13.41   $\pm$   0.65$^{x}$    &   23.21   $\pm$   0.84&   0.38   $\pm$   0.10    &   1.20    $\pm$   0.20    \\
149757  u   &   O9.5V   &   0.28    &   2.01    $\pm$   0.67    &   1.25    $\pm$   0.32    &   5.45   $\pm$   0.20    &   3.57    $\pm$   0.10    &   13.90   $\pm$   1.70$^{x}$    &   23.56   $\pm$   2.10&   2.58  $\pm$   0.12    &   8.32    $\pm$   0.21    \\
151932  u   &   WN7     &   0.50    &   4.46    $\pm$   0.71    &   2.13    $\pm$   0.54    &   5.97   $\pm$   0.78    &   3.60    $\pm$   0.45    &   6.93    $\pm$   1.60    &   13.39   $\pm$   1.20    &   2.56    $\pm$   0.20    &   7.20    $\pm$   0.40    \\
152270  u   &   WC7     &   0.50    &   1.95    $\pm$   0.64    &   2.13    $\pm$   0.70    &   3.52   $\pm$   0.43    &   2.69    $\pm$   0.45    &   11.56   $\pm$   0.54    &   22.31   $\pm$   0.93    &   1.47    $\pm$   0.31    &   5.00    $\pm$   0.43    \\
154368  u   &   O9Ia    &   0.80    &   8.21    $\pm$   1.20    &   5.24    $\pm$   0.86    &   12.24   $\pm$   1.10    &   9.32   $\pm$   0.40    &   10.53   $\pm$   0.79    &   17.89   $\pm$   0.79    &   2.05    $\pm$   0.47    &   5.92    $\pm$   0.67$^{x}$ \\
154811  u   &   O9.5Ib  &   0.66    &   2.43    $\pm$   0.70    &   1.64    $\pm$   0.50    &   5.03   $\pm$   0.34    &   3.12    $\pm$   0.56    &   18.69   $\pm$   1.23$^{x}$    &   31.86   $\pm$   1.43& 0.18    $\pm$   0.10    &   0.49    $\pm$   0.20    \\
163800  h/u &   O7      &   0.57    &   3.71    $\pm$   0.82    &   2.46    $\pm$   0.78    &   6.85   $\pm$   0.30    &   5.16    $\pm$   0.40    &   7.79    $\pm$   0.41    &   13.49   $\pm$   0.43    &   2.87    $\pm$   0.24    &   9.13    $\pm$   0.31    \\
164794  u   &   O4V     &   0.36    &   1.55    $\pm$   0.40    &   1.00    $\pm$   0.65    &   2.29   $\pm$   0.54    &   1.83    $\pm$   0.34    &   4.67    $\pm$   0.34    &   9.32    $\pm$   0.54    &   0.27    $\pm$   0.12    &   0.84    $\pm$   0.25    \\
169454  u   &   B1Ia    &   1.10    &   4.89    $\pm$   0.85    &   2.99    $\pm$   0.72    &   8.51   $\pm$   0.54    &   6.47    $\pm$   0.43    &   9.22    $\pm$   0.54    &   16.89   $\pm$   1.23    &   2.91    $\pm$   0.54    &   9.32    $\pm$   0.80$^{x}$ \\
\hline
\end{tabular}}
\medskip
With supperscript we refer to data concerning the OH molecule from the literature:  $^a$~--~Chaffee \& Lutz (1976); $^b$~--~Felenbok \& Roueff (\cite{Fele96}); $^c$~--~Boiss\'e et~al. (\cite{Bois05}). With $x$ we refer to the measurements of the CN~molecule based on the unsaturated B$-$X~(1,~0)~transition and the CH$^{+}$~molecule based on the unsaturated A$-$X~(1,~0)~transition. In the case of HD~27778 we measured the CN~A$-$X~(1,~0) transition. Toward HD~34078 we measured the unsaturated CH$^{+}$ A$-$X~(2,~0)~line at 3745~\AA\  ($W$(3745)~=~12.23~$\pm$~0.63~m\AA).
\end{table}