Relation between the Hα luminosity of individual H II regions corrected for [N II] contamination and dust attenuation and the equivalent diameter corrected for seeing effects for regions located within (right, filled magenta dots) and outside (left, filled cyan dots) the i-band effective radius of the parent galaxy, where the correction is less than 50%. Grey dots show all H II regions with no limits in luminosity and diameter correction. The vertical dashed line shows the mean FWHM of the survey assuming galaxies at the distance of the main body of the cluster (16.5 Mpc). The magenta and cyan solid lines give the bisector fit of the relations derived for galaxies with a diameter correction factor ≤50% (magenta and cyan filled dots).