Posterior distributions of the total length (L) with uniform (left panels) and Gaussian (right panels) priors. Gaussian priors are centred in v₀ = 22 km s⁻¹ and L_p = 4 Mm with an uncertainty of 10%. The first row shows results of considering multiple observation times with P(t)/P(0)=0.9 and an associated uncertainty of 10%. The second row shows results of considering multiple period ratios with t = 180 s and 10% as uncertainty for all observables. The third row conforms results associated with different uncertainties, σ = 10, 25, 50, 75%, with P(t)/P(0)=0.9 and t = 180 s.