Table 3. Overview of the form factor parametrizations. We will use the dipole ansatz (2P) and the z -expansion with the correct asymptotic behavior ( z 4+( N (cid:0) 3) ) as described in sections 4.2.1 and 4.2.2, respectively. For both cases we also consider parametrizations where PCAC is ful(cid:12)lled in the continuum limit (marked by a preceding ! in the identi(cid:12)er), cf. section 4.2.3. In the rightmost column, we give the total number of (cid:12)t parameters used for the combined continuum, quark mass, and volume extrapolation per form factor, assuming that formulas (4.28) and (4.29) are used for the extrapolation of x a and x a , respectively.