Table 1. Variation in catch rates, partitioned among study sites, trap locations within sites, and residual error from variation among trapping dates across locations.

Source	St. Dev	Variance	% of total
Sites (n = 2)	0.144	0.021	3.4
Locations in sites (n = 30)	0.191	0.036	5.8
Residual error	0.751	0.565	90.8
	Total:	0.623