Distributions of host-galaxy fluxes (gal) obtained by the FVG (top) and PFVG (bottom) as a function of time delays. The distributions are shown for each object (in blue, brown, and red) obtained for different S/N, filters, and for a fixed time-sampling Δt = 3 days. The open circles and squares mark an S/N = 100 and 30, respectively. Dashed inner and outer lines represent 1 and 10% precision, respectively.