Table 1: Column densities^a and relative abundances of argon in Damped Ly $\alpha$ systems.
QSO $z_{\rm abs}$ log N(H I) log N(Ar I)    [Ar/O]    [Ar/S]    [Ar/Si] $\Delta_{\rm [Ar/Si]}^b$ References

0528-2505 2.812 $21.11 \pm 0.04$ $14.25 \pm 0.01$ $-0.55 \pm 0.02$ $-0.63 \pm 0.04$ -0.04 This work; Péroux et al. (P

0841+129 2.375 $21.00 \pm 0.10$ $13.46 \pm 0.10$ $-0.70 \pm 0.10$ $-0.74 \pm 0.10$ -0.00 This work; Centurión et al. (2003)

0841+129 2.476 $20.79 \pm 0.10$ $13.34 \pm 0.12$ $-0.57 \pm 0.12$ $-0.55 \pm 0.14$ -0.01 This work; Centurión et al. (2003)

2343+1232 2.431 $20.18 \pm 0.05^c$ $13.22 \pm 0.05^c$ $-0.78 \pm 0.05^c$ $-0.84 \pm 0.05^c$    - This work; D'Odorico et al. (D

0000-263 3.390 $21.41 \pm 0.08$ $14.02 \pm 0.03$ $-0.03 \pm 0.03$ $+0.00 \pm 0.04$ $+0.00 \pm 0.04$ -0.00 Molaro et al. (2000, 2001)

0201+365 2.462 $20.38 \pm 0.05$ $14.08 \pm 0.03$ $-0.53 \pm 0.03$ $-0.42 \pm 0.03$ -0.20 Prochaska et al. (2002a)

0347-383 3.025 $20.63 \pm 0.01$ $13.99 \pm 0.02$ $-0.43 \pm 0.02$ $-0.21 \pm 0.02$ -0.00 Levshakov et al. (2002)

0741+4741 3.017 $20.48 \pm 0.10$ $13.13 \pm 0.02$ $-0.18 \pm 0.02$    - Prochaska et al. (2002a)

1759+7539 2.626 $20.61 \pm 0.01^c$ $13.68 \pm 0.03^c$ $-0.71 \pm 0.13^c$ $-0.68 \pm 0.04^c$    - Prochaska et al. (2002b)

2243-6031 2.330 $20.24 \pm 0.02^c$ $13.35 \pm 0.05^c$ $-0.59 \pm 0.04^c$ $-0.54 \pm 0.04^c$ -0.00 López et al. (Lop

0001 3.000 $20.70 \pm 0.05$ <13.38 <-0.16 <-0.03 Prochaska et al. (2002a)

0336-0142 3.062 $21.20 \pm 0.10$ >13.94 >-0.37 Prochaska et al. (2002a)

0930+2858 3.235 $20.30 \pm 0.10$ <12.96 <+0.11 Prochaska et al. (2002a)

1426+6039 2.827 $20.30 \pm 0.04$ <13.43 <-0.36 Prochaska et al. (2002a)

2344+12 2.538 $20.36 \pm 0.10$ <13.26 <+0.12 Prochaska et al. (2002a)

^a Column densities are expressed in atoms cm^-2.
^b Additive dust correction term for [Ar/Si] estimated using the set of parameters S11 (Vladilo 2002) and assuming zero dust depletion for Ar.
^c Sum of velocity components seen in Ar I; the total N(H I), given in the original reference, has been scaled down to match the fraction of Si II measured
in the Ar I velocity components.

**Table 1:** Column densities^a and relative abundances of argon in Damped Ly $\alpha$ systems.
QSO	$z_{\rm abs}$	log N(H I)	log N(Ar I)	[Ar/O]	[Ar/S]	[Ar/Si]	$\Delta_{\rm [Ar/Si]}^b$	References
0528-2505	2.812	$21.11 \pm 0.04$	$14.25 \pm 0.01$		$-0.55 \pm 0.02$	$-0.63 \pm 0.04$	-0.04	This work; Péroux et al. (P
0841+129	2.375	$21.00 \pm 0.10$	$13.46 \pm 0.10$		$-0.70 \pm 0.10$	$-0.74 \pm 0.10$	-0.00	This work; Centurión et al. (2003)
0841+129	2.476	$20.79 \pm 0.10$	$13.34 \pm 0.12$		$-0.57 \pm 0.12$	$-0.55 \pm 0.14$	-0.01	This work; Centurión et al. (2003)
2343+1232	2.431	$20.18 \pm 0.05^c$	$13.22 \pm 0.05^c$		$-0.78 \pm 0.05^c$	$-0.84 \pm 0.05^c$	-	This work; D'Odorico et al. (D
0000-263	3.390	$21.41 \pm 0.08$	$14.02 \pm 0.03$	$-0.03 \pm 0.03$	$+0.00 \pm 0.04$	$+0.00 \pm 0.04$	-0.00	Molaro et al. (2000, 2001)
0201+365	2.462	$20.38 \pm 0.05$	$14.08 \pm 0.03$		$-0.53 \pm 0.03$	$-0.42 \pm 0.03$	-0.20	Prochaska et al. (2002a)
0347-383	3.025	$20.63 \pm 0.01$	$13.99 \pm 0.02$	$-0.43 \pm 0.02$		$-0.21 \pm 0.02$	-0.00	Levshakov et al. (2002)
0741+4741	3.017	$20.48 \pm 0.10$	$13.13 \pm 0.02$			$-0.18 \pm 0.02$	-	Prochaska et al. (2002a)
1759+7539	2.626	$20.61 \pm 0.01^c$	$13.68 \pm 0.03^c$		$-0.71 \pm 0.13^c$	$-0.68 \pm 0.04^c$	-	Prochaska et al. (2002b)
2243-6031	2.330	$20.24 \pm 0.02^c$	$13.35 \pm 0.05^c$		$-0.59 \pm 0.04^c$	$-0.54 \pm 0.04^c$	-0.00	López et al. (Lop
0001	3.000	$20.70 \pm 0.05$	<13.38	<-0.16		<-0.03		Prochaska et al. (2002a)
0336-0142	3.062	$21.20 \pm 0.10$	>13.94		>-0.37			Prochaska et al. (2002a)
0930+2858	3.235	$20.30 \pm 0.10$	<12.96			<+0.11		Prochaska et al. (2002a)
1426+6039	2.827	$20.30 \pm 0.04$	<13.43			<-0.36		Prochaska et al. (2002a)
2344+12	2.538	$20.36 \pm 0.10$	<13.26			<+0.12		Prochaska et al. (2002a)

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