WISE-AllWISE AGN candidates in the EDF-N defined by Eq. (4) (top panel) and Eq. (5) (bottom panel). In grey we show all Euclid sources with WISE-AllWISE counterparts, while the blue sources represent the selected AGN candidates. The black dotted lines represent the limits of the C75 and R90 selections. The stellar candidates have already been removed from the samples of AGN candidates.