Experiment	Measurement	Reference
CDF	\([16.6 \pm 3.0\mbox{ (stat)} \pm 1.0\mbox{ (syst)} ^{+2.6}_{-3.4}\mbox{ (PDG)} \pm 0.3\mbox{ (EBR)}] \times 10^{0}\)	PRD 79, 032001 (2009)
Average	\(\mathbf{[16.6 ^{+4.1}_{-4.7}\mbox{ (combined)}] \times 10^{0}}\)