condition	mean	min	max
4 h after light	2.8	2.8	2.8
8 h after light	4.9	2.9	6.9
12 h after light	3.6	3.0	4.2
4 h after dark	4.3	3.4	5.2
8 h after dark	6.9	6.8	7.0
12 h after dark	5.35	3.6	7.1