Far-UV to far-IR SED of the three selected regions along the disc of NGC 4424 (from east to west). In each panel the observational data and their error bars are indicated with red filled dots, the upper limit with a blue triangle; the black solid line shows the best fit model. The inset shows the colour gri RGB image of the galaxy; overlayed are the red boxes indicating the three fields used to study the SED with the CIGALE fitting code.