condition	mean	min	max
4 h after light	2.9	2.9	2.9
8 h after light	2.95	2.9	3.0
12 h after light	2.9	1.7	4.1
4 h after dark	4.65	4.4	4.9
8 h after dark	2.1	1.6	2.6
12 h after dark	3.65	1.8	5.5