**Table 1:** Summary of observing nights at the OSN. The mean accuracy of each dataset is also provided (see text for details).
Dates	Observing	Accuracy (mmag)
	nights	u	v	b	y
20-29 May 2002	10	10	6	6	7
8-14 Jan. 2003	4	9	4	3	4
1-13 Jul. 2003	9	8	4	4	6
30 Jan.-8 Feb. 2004	4	10	5	5	6
13-24 Jul. 2005	6	10	5	5	5
16-30 Jan. 2006	5	7	4	4	5

Source LaTeX | All tables | In the text