Evolution of the masses in five chains of results iteratively obtained from five different sets of initial conditions (diamonds) using the 4-harmonic high-pass filter and observations done in the period BJD 2 454 847–873. All of them converge to the same point P (star). One of the chains started at (0, 0). The figure also shows the result of the first iteration in QBM (point Q1) and the mass values adopted in that paper.