Table 1:

The SDSS DR7 Main DAS (March 2009) sample used and the FoF parameters for the flux- and volume-limited group catalogues.

Sample							LLr0	LLp0	% in groups
							km  s-1	h-1 Mpc
1	2	3	4	5	6	7	8	9	10
Flux-limited groups
DR7 Main	17.77	0.009	0.2	583362	78800	314524	250-579	0.25-0.58	46.1
Volume-limited groups
DR7-18	-18.0	0.02595	0.04590	40 665	5463	24 248	250.0	0.2500	40.4
DR7-19	-19.0	0.02595	0.07141	94 912	12 590	58 733	306.7	0.3067	38.1
DR7-20	-20.0	0.02595	0.11012	148 195	18 973	96 842	409.4	0.4094	34.7
DR7-21	-21.0	0.02595	0.16801	103 978	9139	82 854	543.8	0.5438	20.3

Notes.  Columns: 1 - subsample name; 2 - galaxy magnitude limit in r-band (apparent for flux-limited groups, absolute for volume-limited groups); 3 - lower redshift limit; 4 - higher redshift limit; 5 - total number of galaxies in samples; 6 - number of groups in samples ( 2); 7 - number of single galaxies; 8 - FoF linking length in the radial velocity, for z=0; 9 - FoF linking length in the projected distance in the sky, for z=0; 10 - fraction of galaxies in groups ( 2).