Table 2.

Distances between landmarks on the gerbil skull

Distance between bregma and	ATLAS CT (mm)	All CT (N = 10)
		Median (mm)	Min/max (mm)
Lambda	4.45	4.5	3.79/4.8
Interaural line	7.25	7.25	6.19/7.6
Occipital crest	9.98	9.95	9.79/10.9

Distances of skull landmarks lambda, interaural line and occipital crest are evaluated relative to bregma for the atlas CT scan (column: ATLAS CT) and as median distance values across all CT scans (columns: All CT). The range of values around the median is indicated by the minimum and maximum distance values taken from ten CT scans