condition	mean	min	max
4 h after light	2.8	2.8	2.8
8 h after light	2.65	2.0	3.3
12 h after light	2.3	1.6	3.0
4 h after dark	5.4	3.4	7.4
8 h after dark	8.0	3.0	13.0
12 h after dark	15.05	2.6	27.5