Log(N) versus total F140W magnitude for all galaxies detected in F140W (black histogram). To fit the dashed line, only data points brighter than 22.5 mag were used (small dots). The black numbers indicate the completeness fractions f_c = 10^data/10^fit in percent. The completeness limit f_c ∼ 100% lies at 23 mag. To estimate the completeness for objects with colors, the blue histogram shows galaxies detected in both filters.