The incompleteness functions for individual galaxies from our sample (top panel for GC-LMXBs and middle panel for field LMXBs; the numbers 1, 2, 3, 4, 5, 6, and 7 by the curves refer to M 31, Centaurus A, M 81, Maffei 1, NGC 3379, NGC 4697, and NGC 4278, correspondingly). The bottom panel shows the combined curves for GC (solid line) and field (dotted line) sources. L_X is the unabsorbed X-ray luminosity in 0.5–8 keV.