Table 6: Literature data about high-resolution spectroscopic studies of clusters that have more than one high-resolution entry. Errors refer to the rms dispersion between stellar values, or half of the full spread when only two or three stars are studied. From Cols. 1 to 8 we indicate the abundance measurements. In Col. 9, the number of stars used is given; in Col. 10, the reference, in Cols. 11 and 12, we indicate, respectively, the spectral resolution and the instrument and/or the observatory.

[Fe/H]	[O/Fe]	[Al/Fe]	[Ni/Fe]	[Na/Fe]	[Si/Fe]	[Ca/Fe]	[Ti/Fe]	N	Ref.	R	Instr/OBS
IC 4651
0.12  0.05	-	-0.10  0.06	-0.02  0.08	-0.03  0.07	-0.02  0.05	0.04  0.06	-0.02  0.07	4	1	100 K	UVES/VLT
0.11  0.01	-	-	-	-	-	-	-	5	4	48 K	FEROS/1.5 m
0.10  0.03	-	0.01  0.07	0.05  0.05	0.02  0.16	0.07  0.03	0.02  0.04	0.09  0.04	22	10	100 K	UVES/VLT
Praesepe
0.27  0.10	-0.4  0.2	-0.05  0.12	-0.02  0.10	-0.04  0.12	-0.01  0.12	0.00  0.11	-0.04  0.12	7	1	100 K	UVES/VLT
0.04  0.04	-	-	-	-	-	-	-	7	7	60 & 30 K	CFHT & Hale
0.11  0.03	-	-	-	-	-	-	-	4	2	55 K	MIKE/MagCl
M 67
0.03  0.04	-0.07  0.08	-0.03  0.11	-0.02  0.07	-0.02  0.07	-0.03  0.06	0.03  0.07	-0.02  0.11	6	1	100 K	UVES/VLT
0.02  0.14	0.07  0.03	0.17  0.05	0.08  0.10	0.30  0.10	0.09  0.11	0.07  0.06	0.12  0.07	3	14	28 K	KPNO & CTIO
0.03  0.03	0.01  0.03	-0.05  0.04	-0.02  0.04	0.05  0.07	0.02  0.04	0.05  0.04	-0.02  0.04	10	11	45 K	UVES/VLT
-0.03  0.03	0.02  0.04	0.14  0.06	0.04  0.06	0.19  0.07	0.10  0.04	0.04  0.08	0.04  0.10	12	13	60 & 30 K	SOFIN/NOT
0.02  0.12	-	-	-	-	-	-	-	3	7	60 K	CFHT
-0.04  0.12	-	-	-	-	-	-	-	8	9	34 K	KPNO
Collinder 261
-0.03  0.03	-0.2  0.1	0.12  0.08	0.06  0.08	0.33  0.06	0.24  0.05	0.01  0.05	-0.12  0.09	6	5	48 K	FEROS/1.5 m
-0.22  0.11	-0.1   0.15	0.39  0.12	0.02  0.04	0.48  0.22	0.22  0.09	-0.04  0.10	-0.07  0.09	7	8	25 K	CTIO
Be 29
-0.54  0.02	0.23  0.03	0.26  0.01	-0.02  0.02	0.36  0.01	0.18  0.02	0.02  0.02	0.33  0.04	2	14	28 K	KPNO & CTIO
-0.44  0.18	0.18  0.02	0.20  0.03	0.11  0.06	0.39  0.08	0.22  0.03	0.10  0.06	0.02  0.01	2	3	34 K	HIRES/KECK
NGC 6253
0.46  0.03	-0.18  0.06	-0.08  0.12	-0.05  0.01	0.21  0.02	0.09  0.06	-0.02  0.12	-0.19  0.10	4	6	43 K	UVES/VLT
0.36  0.07	-	-	0.08  0.07	-	0.02  0.08	-0.04  0.12	-0.01  0.14	5	12	47 K	UVES/VLT

References: (1) Present study; (2) An et al. (2007); (3) Carraro et al. (2004); (4) Carretta et al. (2004); (5) Carretta et al. (2005); (6) Carretta et al. (2007); (7) Friel & Boesgaard (1992); (8) Friel et al. (2003); (9) Hobbs & Thorburn (1991); (10) Pasquini et al. (2004); (11) Randich et al. (2006); (12) Sestito et al. (2007); (13) Tautvaisiene et al. (2000); (14) Yong et al. (2005).