condition	mean	min	max
4 h after light	6.3	6.3	6.3
8 h after light	7.2	6.4	8.0
12 h after light	4.050000000000001	3.2	4.9
4 h after dark	6.85	6.8	6.9
8 h after dark	5.65	5.1	6.2
12 h after dark	3.75	1.6	5.9