Background LFs of NGC 5824 based on MegaCam (upper panel) and Kuzma et al. (2018) DECam data (lower panel). Each panel contains a star-count map (left subpanel), the cumulative LF of the entire background (top right), and the cumulative LFs for each corner of the background stars, as indicated in the star-count map (bottom right). In the left subpanels, black dots correspond to the full sharp-cleaned data (only for the MegaCam data). Colored dots represent the color filtered stars used as background. In the right subpanels, the solid black line corresponds to the total background divided by four. The shaded areas in both panels and the black error bars in the bottom panels represent the corresponding Poisson errors, √N_stars.