The complete figure set (52 images) is available in the online journal.

P–V arrays in the Hα λ6563 and [N II] λ6584 emissions for: (a) PB 6, (b) M 3-30, (c) Hb 4, (d) IC 1297, (e) Pe 1-1, (f) M 1-32, (g) M 3-15, (h) M 1-25, (i) Hen 2-142, (j) K 2-16, (k) NGC 6578, (l) NGC 6567, (m) NGC 6629, and (n) Sa 3-107, followed by the associated synthetic P–V diagrams obtained from the best-fitting morpho-kinematic model of all the PNs, except for PB 6 and Sa 3-107, with the parameters given in Table 4. The slits are oriented with PAs along and vertical to the symmetric axis of the morpho-kinematic model passing through the central star, respectively. The velocity in each observed P–V array is with respect to the systemic velocity of the object, given in kilometers per second. The angular offset at 0″ is the nebular center.