Table 1:

Coefficients for Eq. (2).

Study	Ref.	# of stars	# of stars with	a	b	c	d
			(b-y)0>0.6
Favata et al. (1997)	2	46	1	1.0608	-0.9662	-0.7918	7.1781	0.07
Feltzing & Gustafsson (1998)	3	23	2	0.7903	-0.8958	-0.1252	3.9841	0.05
Chen et al. (2000)	4	28	1	1.1759	-2.0582	-0.0767	8.2072	0.06
Thorén & Feltzing (2000)	5	12	4	0.9918	0.0163	-0.2020	0.8187	0.08
Santos et al. (2001)	6	61	1	1.0405	-0.9088	-0.0586	3.6431	0.04
Heiter & Luck (2003)	7	75	0	0.8985	0.7027	-0.1373	-2.0303	0.05
Yong & Lambert (2003)	8	6	2	1.1258	2.0980	-0.2534	-6.3255	0.05
Mishenina et al. (2004)	9	93	1	1.1434	-1.8958	-0.0888	7.5583	0.06
Santos et al. (2004)	10	141	1	1.0098	-1.2361	-0.0838	5.0008	0.04
Bonfils et al. (2005)	11	19	0	0.8761	-0.5454	-0.0422	2.2801	0.07
Luck & Heiter (2005)	12	65	6	0.9736	0.7346	-0.0249	-2.6251	0.06
Santos et al. (2005)	13	64	7	1.0495	-1.1400	-0.0204	4.3450	0.04
Woolf & Wallerstein (2005)	14	8	6	1.0192	0.0846	-0.4226	1.5298	0.04
Sousa et al. (2006)	15	57	1	0.9360	-0.9590	-0.0805	3.9268	0.02

Notes. Column 1 lists the study that is being moved onto the Valenti & Fischer (2005) system and Col. 2 the reference number used in Table B.1. Column 3 lists the number of stars in common with Valenti & Fischer (2005). These are used to obtain the coefficients. Column 4 lists the number of stars redder than (b-y)₀=0.6. Columns 5 to 8 list the coefficients used in Eq. (2), and Col. 9 lists the for the difference between [Fe/H] in the study listed in Col. 1 and the [Fe/H] derived once the data have been put on to the Valenti & Fischer (2005) system. The difference is calculated in the sense [Fe/H]  minus [Fe/H] .