Stellar age indicators for individual spaxels of the blue cloud and red sequence galaxies, represented in blue and red respectively, in different radial bins. The crosses at the bottom-left corner display the mean uncertainties on the spaxel measurements in the corresponding radial bin. The uncertainties on log[EW(Hα)] are 0.01 and 0.02 respectively. The brownish areas indicate regions where the galaxy can be identified as having undergone a burst in the past 2 Gyr. The darker shade denotes areas where galaxies are most likely currently experiencing or have recently experienced a burst that started within the last 0.1 Gyr (details in Kauffmann et al. 2003b).