What are the correct ρ0(770) meson mass and width values?

The accuracy of the Gounaris-Sakurai pion electromagnetic form factor model at the elastic region, in which just the rho(0)(770) resonance appears, is investigated by the particular analysis of the most accurate P-wave isovector pi pi scattering phase shift delta(1)(1)(t) data, obtained by the Garcia-Martin-Kaminski-Pelaez-Yndurain approach, and by an application of the Unitary&Analytic pion electromagnetic structure model to a description of the newest precise data on the e(+)e(-) -> pi(+)pi(-) process.