1-σ distributions of errors for the luminosity distance inferred for n = 10⁴ sources with orbital angular momentum randomly distributed on the sphere and a fixed sky localization with respect to the interferometers configurations left plots and right plots. Vertical dashed lines identify the median of the distribution. The binary systems are located at d = 100 Mpc and at d = 50 Mpc for DECIGO and B-DECIGO observations, respectively. We consider equal mass WDs with m_1, 2 = 1 M_⊙.