condition	mean	min	max
4 h after light	3.1	3.1	3.1
8 h after light	10.5	7.8	13.2
12 h after light	5.75	4.7	6.8
4 h after dark	5.75	4.9	6.6
8 h after dark	3.8	3.5	4.1
12 h after dark	4.5	3.4	5.6