Figure 11. The axial form factor G A ( Q 2 ) obtained using the ! z 4+3 ansatz (cid:12)tted to all available ensembles. This is a combined (cid:12)t to all form factors with (cid:31) 2 = d.o.f. = 0 : 83. The panels correspond to di(cid:11)erent lattice spacings and quark mass trajectories (see section 3.1), where the yellow band corresponds to the form factor obtained from the (cid:12)t, evaluated at physical masses, at in(cid:12)nite volume, but at the lattice spacing corresponding to the particular row.