condition	mean	min	max
4 h after light	4.0	4.0	4.0
8 h after light	3.65	3.2	4.1
12 h after light	6.9	4.4	9.4
4 h after dark	5.75	4.1	7.4
8 h after dark	15.149999999999999	5.9	24.4
12 h after dark	6.6	4.2	9.0