Table 3: Parameters quantifying the irregularity of the gas kinematics measured for the local sample.
ID $\sigma _{\rm PA}$ $\Delta \phi $ k3,5/k1
(1) (2) (3) (4)
NGC 0628 18 9 $\pm$ 35 0.12 $\pm$ 0.04
NGC 2976 (pec) 6 3 $\pm$ 17 0.08 $\pm$ 0.03
NGC 3031 19 2 $\pm$ 19 0.14 $\pm$ 0.08
NGC 3049 20 18 $\pm$ 20 0.11 $\pm$ 0.07
NGC 3184 7 21 $\pm$ 57 0.12 $\pm$ 0.06
NGC 3521 2 3 $\pm$ 3 0.05 $\pm$ 0.03
NGC 3621 2 5 $\pm$ 20 0.05 $\pm$ 0.02
NGC 3938 4 11 $\pm$ 25 0.09 $\pm$ 0.04
NGC 4236 5 11 $\pm$ 5 0.07 $\pm$ 0.02
NGC 4536 5 4 $\pm$ 13 0.07 $\pm$ 0.03
NGC 4569 (Virgo) 10 19 $\pm$ 11 0.06 $\pm$ 0.02
NGC 4579 (Virgo) 10 36 $\pm$ 16 0.17 $\pm$ 0.10
NGC 4625 (pec) 6 57 $\pm$ 52 0.12 $\pm$ 0.06
NGC 4725 (pec) 12 30 $\pm$ 28 0.11 $\pm$ 0.06
NGC 5055 3 4 $\pm$ 4 0.03 $\pm$ 0.02
NGC 5194 (pec) 5 49 $\pm$ 43 0.05 $\pm$ 0.02
NGC 5713 (pec) 8 54 $\pm$ 54 0.06 $\pm$ 0.02
NGC 7331 6 9 $\pm$ 11 0.10 $\pm$ 0.04
Column (1): object ID; Col. (2): standard deviation of the kinematic position angle ( $\sigma _{\rm PA}$); Col. (3): mean misalignment between the kinematic and photometric position angles ( $\Delta \phi $); Col. (4): mean  k3,5/k1 of the analysis done while fixing the position angle and the ellipticity to their global values.
Peculiar galaxies and members of Virgo Cluster are indicated on the first column with ``(pec)/(Virgo)'' next to their name. $\Delta \phi $ of the galaxies that have $\epsilon \leq 0.1$ (NGC 628, NGC 3184, NGC 3938, NGC 5713) have large errors as explained in Sect. 4.1, and are therefore excluded from the analysis.

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