Table 2: Minimum line-of-sight separation of galaxy pairs.

Galaxy 1	Galaxy 2	SBF calibration
			P=0.95	P=0.99
M 59	M 60	broken-linear	1.32	0.85
M 59	M 60	polynomial	0.30	-0.08
M 59	M 60	linear	2.37	2.11
M 59	M 60	mixed	0.43	0.02
M 59	NGC 4638	broken-linear	1.64	1.25
M 59	NGC 4638	polynomial	1.29	0.93
M 59	NGC 4638	linear	1.10	0.84
NGC 4660	M 60	broken-linear	1.25	0.82
NGC 4660	M 60	polynomial	0.37	-0.01
NGC 4660	M 60	linear	2.85	2.56
NGC 4660	M 60	mixed	0.37	-0.01
NGC 4660	NGC 4638	broken-linear	1.59	1.23
NGC 4660	NGC 4638	polynomial	1.36	1.00
NGC 4660	NGC 4638	linear	1.58	1.30
M 59+NGC 4660	M 60	broken-linear	1.39	0.99
M 59+NGC 4660	M 60	polynomial	0.44	0.09
M 59+NGC 4660	M 60	linear	2.69	2.44
M 59+NGC 4660	M 60	mixed	0.52	0.17

Notes: the lines with mixed SBF calibrations use broken-line and polynomial SBF calibrations for Galaxy 1 and M 60, respectively, which appear to be the most appropriate calibrations for those galaxies. For each combination of galaxies, the most suitable set of SBF calibrations are highlighted in bold.