Table 2: List of column densities $\log N$ [ $\rm cm^{-2}$] towards NGC 6231. FWHM, radial velocities v, and Doppler widths b are in km s-1. Upper limits are at least $3\sigma $. The b values are "effective'' values for the measured absorption lines and should be lower for individual unresolved subcomponents.
  152 200 152 219 152 234 152 249   152 270   326 329   -41 7712

FWHM		 24 24 24 22 22 22 22 22 22 22

v		 -8 -8 -8 -8 -40 -8 -40 -8 -35 -10

b		 7.0 7.0 7.0 6.0 6.0 8.0 - 7.0 7.0 7.0

H2, J=0		 $\rm 20.14^{+0.02}_{-0.02}$ $\rm 20.10^{+0.02}_{-0.02}$ $\rm 20.21^{+0.02}_{-0.03}$ $\rm 20.00^{+0.02}_{-0.05}$ - $\rm 20.22^{+0.02}_{-0.04}$ - $\rm 20.08^{+0.02}_{-0.02}$ - $\rm 20.25^{+0.02}_{-0.02}$
H2, J=1 $\rm 19.97^{+0.02}_{-0.02}$ $\rm 20.00^{+0.02}_{-0.02}$ $\rm 20.01^{+0.02}_{-0.02}$ $\rm 19.89^{+0.02}_{-0.02}$ >16.00 $\rm 20.03^{+0.02}_{-0.02}$ - $\rm 19.95^{+0.02}_{-0.02}$ < $\rm 15.40^{+0.49}_{-0.49}$ $\rm 20.11^{+0.02}_{-0.02}$
H2, J=2 $\rm 18.12^{+0.27}_{-0.28}$ $\rm 18.39^{+0.11}_{-0.11}$ $\rm 18.25^{+0.16}_{-0.16}$ $\rm 18.42^{+0.08}_{-0.08}$ $\rm 14.70^{+0.32}_{-0.29}$ $\rm 18.68^{+0.05}_{-0.05}$ - $\rm 18.58^{+0.09}_{-0.07}$ < $\rm 14.60^{+0.32}_{-0.32}$ $\rm 18.72^{+0.06}_{-0.06}$
H2, J=3 $\rm 17.40^{+0.45}_{-0.45}$ $\rm 17.56^{+0.43}_{-0.43}$ $\rm 17.18^{+0.60}_{-0.21}$ $\rm 17.62^{+0.39}_{-0.39}$ $\rm 14.90^{+0.26}_{-0.36}$ $\rm 17.84^{+0.39}_{-0.39}$ - $\rm 17.97^{+0.36}_{-0.36}$ $\rm 15.12^{+0.06}_{-0.06}$ $\rm 18.26^{+0.18}_{-0.18}$
H2, J=4 $\rm 15.96^{+0.16}_{-0.16}$ $\rm 15.91^{+0.18}_{-0.18}$ $\rm 15.94^{+0.16}_{-0.16}$ $\rm 15.88^{+0.14}_{-0.14}$ $\rm 14.30^{+0.17}_{-0.23}$ $\rm 15.65^{+0.12}_{-0.12}$ - < $\rm 15.96^{+0.30}_{-0.30}$ < $\rm 14.48^{+0.25}_{-0.25}$ $\rm 16.29^{+0.14}_{-0.16}$
H2, J=5 $\rm 15.40^{+0.10}_{-0.10}$ $\rm 15.14^{+0.07}_{-0.07}$ $\rm 15.22^{+0.08}_{-0.08}$ $\rm 14.95^{+0.04}_{-0.04}$ $\rm 14.20^{+0.13}_{-0.13}$ $\rm 14.99^{+0.03}_{-0.04}$ - $\rm 15.18^{+0.07}_{-0.08}$ < $\rm 14.46^{+0.48}_{-0.48}$ $\rm 15.22^{+0.09}_{-0.09}$
H2, J=6 <14.15 <14.00 $\rm 14.09^{+0.05}_{-0.05}$ <14.00 - <14.15 - <14.15 - <14.20
H2, J=7 $\rm 14.08^{+0.04}_{-0.04}$ $\rm 14.06^{+0.02}_{-0.02}$ $\rm 14.12^{+0.02}_{-0.02}$ <14.20 - $\rm 14.02^{+0.04}_{-0.02}$ - <14.10 - <14.20

HD, J=0		 $\rm 14.64^{+0.09}_{-0.10}$ $\rm 14.59^{+0.06}_{-0.05}$ $\rm 14.62^{+0.05}_{-0.04}$ $\rm 14.51^{+0.06}_{-0.06}$ - $\rm 14.55^{+0.07}_{-0.05}$ - $\rm 14.61^{+0.10}_{-0.09}$ - $\rm 14.71^{+0.09}_{-0.10}$
HD, J=1 <14.00 <13.90 <13.95 <13.90 - <14.15 - <14.20 - <14.30

CO1		 $\rm 13.85^{+0.06}_{-0.12}$ $\rm 13.78^{+0.08}_{-0.04}$ $\rm 13.91^{+0.03}_{-0.02}$ $\rm 13.82^{+0.05}_{-0.01}$ - $\rm 13.95^{+0.05}_{-0.02}$ - $\rm 13.99^{+0.11}_{-0.05}$ - $\rm 13.89^{+0.11}_{-0.06}$
CO2 >13.70 >13.63 >13.69 >13.67 - >13.60 - >13.79 - >13.87

v		 -6 -2 -6 -1 -40 +2 -40 -3 -40 -4

b		 9.0 9.0 10.0 10.0 - 9.0 - 10.0 - 9.0

C I (3P0)		 $\rm 15.15^{+0.05}_{-0.05}$ $\rm 15.05^{+0.03}_{-0.06}$ $\rm 15.17^{+0.02}_{-0.02}$ $\rm 15.05^{+0.07}_{-0.07}$ - $\rm 15.00^{+0.15}_{-0.15}$ - $\rm 15.14^{+0.05}_{-0.04}$ - < $\rm 15.30^{+0.05}_{-0.05}$
C I (3P1) $\rm 14.86^{+0.03}_{-0.03}$ <14.90 $\rm 15.00^{+0.03}_{-0.03}$ <14.75 - <14.80 - $\rm 14.97^{+0.06}_{-0.04}$ - <15.00
C I (3P2) <14.60 <14.60 <14.75 <14.45 - <14.60 - <14.55 - <14.60

v		 -14 -11 -13 -8 -40 -8 -40 -8 -35 -10

b		 15.0 16.0 14.0 14.0 5.0 16.0 5.0 12.0 7.0 16.0

H I		 $\rm 21.23^{+0.02}_{-0.02}$ $\rm 21.38^{+0.02}_{-0.02}$ $\rm 21.32^{+0.02}_{-0.02}$ $\rm 21.40^{+0.08}_{-0.02}$ - $\rm 21.44^{+0.10}_{-0.02}$ - $\rm 21.36^{+0.02}_{-0.02}$ - $\rm 21.37^{+0.02}_{-0.02}$

O I		 $\rm 18.52^{+0.42}_{-0.49}$ $\rm 18.35^{+0.37}_{-0.43}$ $\rm 18.95^{+0.44}_{-0.45}$ $\rm 17.10^{+0.30}_{-0.37}$ - $\rm 17.05^{+0.25}_{-0.34}$ $\rm 18.30^{+0.84}_{-0.87}$ <18.95 $\rm 19.00^{+1.05}_{-0.43}$ $\rm 18.41^{+0.42}_{-0.58}$
Si II <16.85 $\rm 17.63^{+0.36}_{-0.48}$ - - - $\rm 17.35^{+0.48}_{-1.26}$ <16.95 - - $\rm 17.49^{+0.51}_{-1.59}$
Fe II $\rm 15.23^{+0.03}_{-0.03}$ $\rm 15.18^{+0.04}_{-0.03}$ $\rm 15.23^{+0.03}_{-0.04}$ $\rm 15.16^{+0.02}_{-0.02}$ $\rm 14.41^{+0.07}_{-0.07}$ $\rm 15.15^{+0.02}_{-0.02}$ $\rm 14.37^{+0.08}_{-0.08}$ $\rm 15.22^{+0.04}_{-0.04}$ $\rm 14.53^{+0.04}_{-0.04}$ $\rm 15.18^{+0.03}_{-0.03}$
Ar I $\rm 15.05^{+0.13}_{-0.13}$ $\rm 15.43^{+0.17}_{-0.18}$ $\rm 15.13^{+0.15}_{-0.15}$ $\rm 14.69^{+0.12}_{-0.06}$ >15.20? $\rm 14.67^{+0.09}_{-0.12}$ $\rm 14.50^{+0.83}_{-0.53}$ $\rm 14.89^{+0.23}_{-0.37}$ <16.55 $\rm 15.56^{+0.20}_{-0.22}$
N I $\rm 17.40^{+0.37}_{-0.42}$ $\rm 17.20^{+0.31}_{-0.32}$ $\rm 17.45^{+0.47}_{-0.43}$ $\rm 17.00^{+0.38}_{-0.34}$ >16.60? $\rm 17.30^{+0.49}_{-0.49}$ $\rm 16.50^{+0.69}_{-0.69}$ $\rm 17.30^{+0.50}_{-0.37}$ <17.45 $\rm 17.35^{+0.36}_{-0.44}$
P II $\rm 14.24^{+0.07}_{-0.08}$ $\rm 14.25^{+0.07}_{-0.07}$ $\rm 14.18^{+0.05}_{-0.05}$ $\rm 14.10^{+0.04}_{-0.04}$ $\rm 13.76^{+0.23}_{-0.24}$ $\rm 14.16^{+0.04}_{-0.06}$ $\rm 14.14^{+0.04}_{-0.06}$ $\rm 14.17^{+0.15}_{-0.08}$ $\rm 13.85^{+0.25}_{-0.25}$ $\rm 14.25^{+0.09}_{-0.10}$

$\Sigma(\mbox{H}_2)$		 $\rm 20.37^{+0.01}_{-0.01}$ $\rm 20.36^{+0.01}_{-0.01}$ $\rm 20.43^{+0.01}_{-0.01}$ $\rm 20.26^{+0.01}_{-0.01}$ - $\rm 20.44^{+0.01}_{-0.02}$ - $\rm 20.33^{+0.01}_{-0.01}$ - $\rm 20.50^{+0.01}_{-0.01}$
$\Sigma(\mbox{HD})$ $\rm 14.72^{+0.09}_{-0.10}$ $\rm 14.65^{+0.06}_{-0.05}$ $\rm 14.69^{+0.03}_{-0.02}$ $\rm 14.59^{+0.05}_{-0.05}$ - $\rm 14.66^{+0.07}_{-0.06}$ - $\rm 14.71^{+0.09}_{-0.08}$ - $\rm 14.80^{+0.08}_{-0.08}$

1 From fit, 2 from $W_\lambda(\mbox{CO C-X @}1088\mbox{~\AA})$; see Sect. 3.2.1.


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