Table 4. Geometric means (95% confidence intervals) for families of flies when roof is absent and present.

Family of Fly	Roof absent (n=9)	Roof present (n=33)
Calliphoridae	24.5 (5.0-121.0)	4.2 (2.5-6.8)
Psychodidae	60.0 (14.2-254.3)	4.6 (2.4-8.5)
Culicidae	1.5 (0.9-2.5)	2.0 (1.2-3.6)
Sarcophagidae	1.1 (0.9-1.3)	1.0 (1.0-1.1)
Stratiomyidae	1.4 (1.0-1.8)	1.1 (1.0-1.2)
Syrphidae	1.7 (0.9-3.0)	1.1 (1.0-1.2)
Unknown	1.3 (0.8-2.0)	1.3 (1.1-1.5)
Total	121.2 (35.5-414.0)	14.6 (7.6-27.8)