condition	mean	min	max
4 h after light	2.4	2.4	2.4
8 h after light	6.7	3.1	10.3
12 h after light	4.0	2.8	5.2
4 h after dark	2.6	2.2	3.0
8 h after dark	5.4	5.1	5.7
12 h after dark	6.75	3.3	10.2