SG  blue fraction as a function of the group-centric distance. Left/(right) panels refer to the low/(high) redshift bin and mass limits are ℳ_{cut − off} = 9.8/(ℳ_{cut − off} = 10.56). Open circles refer to observed F_blue while filled ones to corrected F_blue, i.e., taking into account interloper contamination (see text for details). The points refer to the three regions: inner core, intermediate, and more external/infall region. Corrected blue fractions values are displayed at the median distance of each region, while observed blue fractions are offset for clarity. As a reference we plot the fraction of the blue field galaxies (cyan star) and the mean corrected blue fraction in groups (big red circle).