Experiment	Measurement	Reference
CDF	\([1.97 \pm 0.10\mbox{ (stat)} \pm 0.21\mbox{ (syst)}] \times 10^{0}\)	PRL 96 191801 (2006)
Average	\(\mathbf{[1.97 \pm 0.23\mbox{ (combined)}] \times 10^{0}}\)