Table 1: Comparison of $v_{\rm max}$ [km s-1] (maximum velocity of rotation curves) and $HW20M_{\rm HI}$ [km s-1] (Half of the HI profile between points where the intensity falls to 20% of the highest channels in each half of the profile and corrected for relativistic effects; Note: average only with the galaxies which have this datum available) for spiral galaxies in Mathewson et al. (1992) catalogue in barred and non-barred cases as a function of the galaxy type.
Galaxy type Non-barred: (N), $\langle v_{\rm max}\rangle$, $\langle HW20M_{\rm HI}\rangle$ Barred: (N), $\langle v_{\rm max}\rangle$, $\langle HW20M_{\rm HI}\rangle$

+3		 (339), $174\pm 3$, $164\pm 5$ (23), $182\pm 15$, $180\pm 17$
+4 (114), $155\pm 5$, $156\pm 7$ (10), $205\pm 17$, $158\pm 20$
+5 (96), $127\pm 6$, $127\pm 9$ (18), $132\pm 13$, $125\pm 13$
+6 (526), $150\pm 2$, $150\pm 3$ (31), $127\pm 8$, $116\pm 6$
+7 (26), $112\pm 9$, $117\pm 13$ (8), $77\pm 7$, $81\pm 7$
+8 (55), $91\pm 4$, $96\pm 4$ (11), $78\pm 5$, $85\pm 5$


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