\begin{table}%t4
\caption{\label{methanol}List of detected lines of CH$_3$OH.}
\par
%\centering
\par
\begin{tabular}{cc|cc|cc|cc|cc|cc}
\hline  \hline 
Transition & Freq.  & \multicolumn{2}{c|}{L1157-B1} & \multicolumn{2}{c|}{IRAS~16293} &  \multicolumn{2}{c|}{OMC2-IRAS~4} &  \multicolumn{2}{c|}{AFGL~2591} &  \multicolumn{2}{c}{NGC~6334I}\\
            &   & $T_{\rm mb}\Delta v$ & $\Delta v$ & $T_{\rm mb}\Delta v$ & $\Delta v$ & $T_{\rm mb}\Delta v$ & $\Delta v$ & $T_{\rm mb}\Delta v$ & $\Delta v$ & $T_{\rm mb}\Delta v$ & $\Delta v$ \\
   & (GHz) & K km~s$^{-1}$ & km~s$^{-1}$ & K km~s$^{-1}$ & km~s$^{-1}$ & K km~s$^{-1}$ & km~s$^{-1}$ & K km~s$^{-1}$ & km~s$^{-1}$ & K km~s$^{-1}$ & km~s$^{-1}$\\
\hline  
$11_{20}{-}10_{10}$ &  558.345    &  $\leq$0.13 & --    &  0.49(0.12) &   6.3    &  1.53(0.12) &   3.3    &  $\leq$0.31 & --    &  6.57(1.72) &   5.3\\
$3_{-20}{-}2_{-10}$ &  568.566    &  $\leq$0.10 & --    &  0.85(0.11) &   4.0    &  2.35(0.13) &   4.3    &  $\leq$0.26 & --    &  9.72(0.47) &   5.7\\
$17_{0+0}{-}16_{1+0}$ &  568.784    &  $\leq$0.09 & --    &  $\leq$0.10 & --    &  0.74(0.14) &   3.3    &  $\leq$0.25 & --    &  3.81(0.50) &   5.3\\
$15_{-10}{-}14_{00}$ &  572.899    &  $\leq$0.08 & --    &  $\leq$0.13) &   --   &  1.20(0.09) &   3.6    &  $\leq$0.23 & --    &  4.82(0.52) &   5.4\\
$12_{1+0}{-}11_{1+0}$ &  574.868    &  $\leq$0.09 & --    &  0.41(0.11) &   4.7    &  1.30(0.10) &   4.1    &  0.83(0.22) &   9.1    &  5.96(0.86) &   5.5\\
$12_{0+2}{-}11_{0+2}$ &  577.996    &  $\leq$0.07 & --    &  0.43(0.12) &   5.7    &  1.67(0.12) &   3.8    &  $\leq$0.28 & --    &  5.65(1.15) &   5.8\\
$12_{00}{-}11_{00}$ &  578.006    &  $\leq$0.09 & --    &  0.53(0.11) &   6.2    &  1.61(0.11) &   3.7    &  $\leq$0.29 & --    &  5.48(1.25) &   5.6\\
$2_{2-0}{-}1_{1-0}$ &  579.085    &  0.46(0.08) &   6.2    &  0.76(0.13) &   4.5    &  1.84(0.11) &   4.3    &  $\leq$0.25 & --    &  9.96(4.55) &   5.3\\
$12_{-10}{-}11_{-10}$ &  579.150    &  0.43(0.09) &   5.2    &  0.53(0.14) &   4.1    &  2.84(0.09) &   3.5    &  $\leq$0.26 & --    &  $\leq$6.43 & --\\
$12_{0+0}{-}11_{0+0}$ &  579.460    &  $\leq$0.07 & --    &  0.57(0.14) &   5.0    &  3.01(0.09) &   3.7    &  $\leq$0.26 & --    &  6.98(0.68) &   5.5\\
$12_{2-0}{-}11_{2-0}$ &  579.858    &  $\leq$0.08 & --    &  $\leq$0.12 & --    &  0.62(0.10) &   4.1    &  $\leq$0.35 & --    &  8.14(6.18) &   8.2\\
$2_{2+0}{-}1_{1+0}$ &  579.921    &  $\leq$0.10 & --    &  0.59(0.13) &   4.4    &  1.69(0.09) &   4.2    &  $\leq$0.28 & --    & 13.00(3.60) &   8.0\\
$12_{6+0}{-}11_{6+0}$ &  579.933    &  $\leq$0.09 & --    &  0.81(0.17) &   5.7    &  1.79(0.19) &   4.3    &  $\leq$0.34 & --    & 10.58(3.88) &   6.5\\
$12_{10}{-}11_{10}$ &  580.369    &  $\leq$0.09 & --    &  0.49(0.11) &   5.9    &  1.09(0.12) &   3.8    &  $\leq$0.28 & --    &  6.26(3.06) &   5.8\\
$12_{2+0}{-}11_{2+0}$ &  580.502    &  $\leq$0.08 & --    &  $\leq$0.12 &  --    &  0.59(0.13) &   4.1    &  $\leq$0.26 & --    &  5.39(3.35) &   5.3\\
$12_{20}{-}11_{20}$ &  580.903    &  $\leq$0.08 & --    &  0.68(0.12) &   6.4    &  1.47(0.10) &   3.6    &  $\leq$0.27 & --    &  6.25(0.63) &   5.4\\
$12_{-20}{-}11_{-20}$ &  581.092    &  $\leq$0.08 & --    &  0.49(0.13) &   6.4    &  0.84(0.13) &   4.3    &  $\leq$0.20 & --    &  6.34(0.44) &   5.9\\
$6_{1+0}{-}5_{0+0}$ &  584.450    &  0.82(0.10) &   6.7    &  1.31(0.12) &   4.1    &  4.06(0.14) &   3.9    &  $\leq$0.27 & --    & 13.38(0.54) &   5.9\\
$12_{1-0}{-}11_{1-0}$ &  584.822    &  $\leq$0.14 & --    &  0.48(0.15) &   6.0    &  1.78(0.13) &   3.7    &  $\leq$0.34 & --    &  8.56(0.94) &   9.2\\
$23_{-30}{-}22_{-40}$ &  587.622    &  $\leq$0.12 & --    &  3.23(0.16) &   4.2    &  3.45(0.39) &   9.4    &  0.88(0.27) &   4.4    & 16.38(1.23) &   7.1\\
$7_{3+0}{-}6_{2+0}$ &  590.278    &  $\leq$0.13 & --    &  0.76(0.12) &   5.8    &  2.29(0.15) &   3.7    &  $\leq$0.31 & --    & 10.26(0.51) &   5.6\\
$7_{3-0}{-}6_{2-0}$ &  590.440    &  $\leq$0.11 & --    &  0.77(0.15) &   4.4    &  2.19(0.15) &   3.7    &  1.04(0.26) &   8.0    &  9.92(0.62) &   5.4\\
$9_{00}{-}8_{-10}$ &  590.791    &  $\leq$0.13 & --    &  0.70(0.23) &   5.6    &  1.99(0.15) &   3.7    &  $\leq$0.28 & --    &  6.25(1.44) &   4.8\\
$9_{10}{-}8_{00}$ &  602.233    &  $\leq$0.13 & --    &  0.47(0.20) &   4.5    &  1.52(0.19) &   3.7    &  $\leq$0.35 & --    &  7.49(2.56) &   5.3\\
$12_{20}{-}11_{10}$ &  607.216    &  $\leq$0.14 & --    &  $\leq$0.38 &  --    &  1.29(0.18) &   3.5    &  $\leq$0.33 & --    &  5.77(0.86) &   5.2\\
$13_{1+0}{-}12_{1+0}$ &  622.659    &  $\leq$0.09 & --    &  0.53(0.12) &   7.3    &  1.22(0.12) &   4.0    &  $\leq$0.27 & --    &  9.57(1.10) &   8.2\\
$13_{00}{-}12_{00}$ &  625.749    &  $\leq$0.10 & --    &  0.38(0.13) &   5.5    &  1.51(0.12) &   3.7    &  $\leq$0.35 & --    &  6.06(0.78) &   5.9\\
$13_{2+1}{-}12_{2+1}$ &  626.609    &  $\leq$0.13 & --    &  0.71(0.22) &   3.7    &  2.14(0.39) &   4.3    &  $\leq$0.36 & --    & 11.46(2.90) &   6.5\\
$3_{2-0}{-}2_{1-0}$ &  626.626    &  $\leq$0.10 & --    &  0.59(0.14) &   3.4    &  2.22(0.12) &   4.5    &  $\leq$0.31 & --    &  9.80(2.84) &   5.6\\
$13_{01}{-}12_{01}$ &  626.640    &  $\leq$0.11 & --    &  0.63(0.16) &   3.5    &  2.18(0.33) &   4.4    &  $\leq$0.38 & --    &  8.78(2.31) &   5.1\\
$13_{-10}{-}12_{-10}$ &  627.170    &  $\leq$0.09 & --    &  0.75(0.14) &   6.5    &  2.70(0.13) &   3.9    &  $\leq$0.29 & --    &  5.20(1.38) &   4.6\\
$13_{1-2}{-}12_{1-2}$ &  627.187    &  $\leq$0.11 & --    &  0.68(0.21) &   6.7    &  3.32(0.96) &   4.6    &  $\leq$0.33 & --    &  5.72(1.95) &   4.9\\
$13_{0+0}{-}12_{0+0}$ &  627.558    &  $\leq$0.11 & --    &  0.65(0.14) &   5.5    &  2.72(0.11) &   3.8    &  $\leq$0.29 & --    &  6.90(1.00) &   5.4\\
$13_{a10}{-}12_{a10}$ &  627.572    &  $\leq$0.11 & --    &  0.71(0.15) &   6.6    &  2.86(0.33) &   3.9    &  $\leq$0.31 & --    &  6.99(1.18) &   5.5\\
$14_{-60}{-}15_{-50}$ &  628.042    &  $\leq$0.09 & --    &  $\leq$0.12 & --    &  0.61(0.13) &   4.7    &  $\leq$0.27 & --    &  8.97(2.97) &   9.2\\
$13_{2-0}{-}12_{2-0}$ &  628.052    &  $\leq$0.10 & --    &  $\leq$0.17 &  --    &  0.62(0.14) &   4.7    &  $\leq$0.30 & --    &  9.22(2.95) &   9.4\\
$13_{3+0}{-}12_{3+0}$ &  628.470    &  $\leq$0.09 & --    &  $\leq$0.20 & --    &  0.68(0.24) &   4.8    &  $\leq$0.30 & --    &  $\leq$5.22 & --\\
$13_{4-0}{-}12_{4-0}$ &  628.512    &  $\leq$0.10 & --    &  $\leq$0.18 &  --   &  1.30(0.27) &  10.2    &  $\leq$0.30 &   --   &  $\leq$3.60 & --\\
$13_{3-0}{-}12_{3-0}$ &  628.525    &  $\leq$0.09 & --    &  $\leq$0.10 & --    &  1.31(0.11) &  10.0    &  $\leq$0.31 & --    & 13.23(4.49) &  11.1\\
$13_{10}{-}12_{10}$ &  628.696    &  $\leq$0.14 & --    &  0.43(0.18) &   6.9    &  1.00(0.12) &   3.9    &  $\leq$0.31 & --    &  4.35(0.88) &   4.3\\
$13_{30}{-}12_{30}$ &  628.816    &  $\leq$0.10 & --    &  0.49(0.12) &   7.6    &  0.42(0.11) &   6.0    &  $\leq$0.34 & --    &  5.54(3.80) &   5.6\\
$13_{2+0}{-}12_{2+0}$ &  628.869    &  $\leq$0.10 & --    &  $\leq$0.12 & --    &  0.58(0.11) &   4.5    &  $\leq$0.30 & --    &  5.76(3.61) &   5.3\\
$3_{2+0}{-}2_{1+0}$ &  629.140    &  0.51(0.11) &   6.3    &  0.86(0.15) &   4.2    &  2.06(0.14) &   4.0    &  $\leq$0.34 & --    & 12.61(0.61) &   5.8\\
$13_{20}{-}12_{20}$ &  629.322    &  $\leq$0.12 & --    &  0.48(0.15) &   6.0    &  1.42(0.11) &   3.9    &  $\leq$0.33 & --    &  6.34(1.45) &   5.4\\
$13_{-20}{-}12_{-20}$ &  629.652    &  $\leq$0.09 & --    &  $\leq$0.14 &   --  &  0.76(0.12) &   4.4    &  $\leq$0.28 & --    &  6.22(0.60) &   5.4\\
$7_{1+0}{-}6_{1+0}$ &  629.921    &  0.51(0.12) &   5.8    &  1.29(0.11) &   4.3    &  4.22(0.10) &   3.9    &  $\leq$0.26 & --    & 13.51(0.50) &   6.1\\
$13_{1-0}{-}12_{1-0}$ &  633.423    &  $\leq$0.11 & --    &  0.46(0.16) &   5.7    &  1.69(0.14) &   3.7    &  $\leq$0.38 & --    &  6.45(0.57) &   5.2\\
\hline 
\end{tabular}
\tablefoot {Only lines detected in at least a source other than NGC~6334I are reported. Columns are as in Table~3. Note that the nomenclature for the transition is the one from the JPL~catalog.}
\end{table}