Figure 10. The vertical spacing between Pogonomyrmex badius nest chambers increases to a maximum in the 7th or 8th deciles then decreases again. This pattern does not change much with nest size because nest deepening and chamber addition occur simultaneously, preserving spacing. One nest in size class 2 contained outliers in the 5th and 6th deciles. None of the other size classes were different in how spacing varied with depth.