CONSTRAINED FIT INFORMATIONshow precise values?

 
An overall fit to total width, partial width, 7 branching ratios uses 22 measurements and one constraint to determine 9 parameters. The overall fit has a $\chi {}^{2}$ = 9.5 for 14 degrees of freedom.
 
The following off-diagonal array elements are the correlation coefficients <$\mathit \delta $x$_{i}$~$\delta $x$_{j}$> $/$ ($\mathit \delta $x$_{i}\cdot{}\delta $x$_{j}$), in percent, from the fit to parameters ${{\mathit p}_{{i}}}$, including the branching fractions, $\mathit x_{i}$ =$\Gamma _{i}$ $/$ $\Gamma _{total}$. The fit constrains the ${{\mathit x}_{{i}}}$ whose labels appear in this array to sum to one.
 
 x6  100
 x7   100
 x8    100
 x9     100
 x10      100
 x11       100
 x12        100
 x14         100
 Γ          100
   x6  x7  x8  x9  x10  x11  x12  x14 Γ
 
  Mode Rate (MeV)Scale factor

Γ6  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$  $0.9892$ $\pm0.0016$ 
Γ7  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$  $0.0099$ $\pm0.0016$ 
Γ8  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \gamma}}$  ($4.7$ $\pm0.6$) $ \times 10^{-4}$ 1.4
Γ9  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \gamma}}$  ($3.00$ $\pm0.21$) $ \times 10^{-4}$ 
Γ10  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$  ($4.5$ $\pm0.8$) $ \times 10^{-5}$ 
Γ11  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$  ($4.55$ $\pm0.28$) $ \times 10^{-5}$ 
Γ12  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$  ($4.72$ $\pm0.05$) $ \times 10^{-5}$ 
Γ14  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$  ($1.8$ $\pm0.9$) $ \times 10^{-5}$ 

 
An overall fit to total width, partial width, uses 10 measurements and one constraint to determine 3 parameters. The overall fit has a $\chi {}^{2}$ = 10.7 for 8 degrees of freedom.
 
The following off-diagonal array elements are the correlation coefficients <$\mathit \delta $x$_{i}$~$\delta $x$_{j}$> $/$ ($\mathit \delta $x$_{i}\cdot{}\delta $x$_{j}$), in percent, from the fit to parameters ${{\mathit p}_{{i}}}$, including the branching fractions, $\mathit x_{i}$ =$\Gamma _{i}$ $/$ $\Gamma _{total}$. The fit constrains the ${{\mathit x}_{{i}}}$ whose labels appear in this array to sum to one.
 
 x2  100
 x3   100
 Γ    100
   x2  x3 Γ
 
  Mode Rate (MeV)Scale factor

Γ2  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{\pm}}{{\mathit \pi}^{0}}$  $0.99955$ $\pm0.00005$ 2.2
Γ3  ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{\pm}}{{\mathit \gamma}}$  ($4.5$ $\pm0.5$) $ \times 10^{-4}$ 2.2