Distance of DESI DR2+Planck+Union3 best-fit from ΛCDM given by the number of standard deviations, and FoM when adding SNe at one redshift bin z with different total uncertainties to DESI DR2+Planck+Union3 and low-z SNe. Total uncertainties include statistical and systematic errors, although statistical errors typically become subdominant for 10³ to 10⁴ SNe Ia. We find that measuring around z ≈ 0.6 increases the distance from ΛCDM and the FoM most.