Table 2: Radial-velocity measurements and error bars for Gl 581. All values are relative to the solar system barycenter.

JD-2 400 000	RV	Uncertainty
	[km s-1]	[km s-1]
53152.71289	-9.2235	0.0012
53158.66336	-9.2319	0.0014
53511.77355	-9.2202	0.0014
53520.74475	-9.1999	0.0016
53574.52223	-9.2024	0.0013
53575.48075	-9.2069	0.0011
53576.53646	-9.2202	0.0011
53577.59250	-9.2221	0.0014
53578.51061	-9.2108	0.0010
53578.62960	-9.2092	0.0013
53579.46256	-9.1991	0.0011
53579.62115	-9.1970	0.0012
53585.46167	-9.2034	0.0013
53586.46516	-9.2141	0.0010
53587.46481	-9.2269	0.0020
53588.53827	-9.2179	0.0036
53589.46202	-9.2051	0.0010
53590.46379	-9.1990	0.0010
53591.46638	-9.2034	0.0010
53592.46481	-9.2175	0.0010