Left panel: relationship between the age of the different H II regions as derived from CIGALE (in Myr) and their projected distance from the nucleus of NGC 4254 (in kpc). Filled or empty dots indicate the H II regions where the SED fitting gives reduced or , respectively. Blue big filled dots indicate the median values within different distance bins. The red long-dashed vertical line indicates the23.5 mag arcsec⁻² i-band isophotal radius of the galaxy given in Cortese et al. (2012b). Right panel: age distribution of all the H II regions.