Distribution of non‐GC excess in units of σ over the background. Data is the same as for Fig. 3. The expected width of the distribution as determined by counting statistics and cosmic variance is represented by the Gaussian curve. While the mean has been adjusted to fit the galaxy data, its width has not. Pluses along the bottom represent the position of individual galaxies. Notice that the distribution is largely Gaussian, but has a tail of objects to the right. The dotted line represents 3 σ above the mean, and separates "normal" galaxies from those that have an excess of faint, extended objects.