condition	mean	min	max
4 h after light	2.2	2.2	2.2
8 h after light	5.1	4.1	6.1
12 h after light	12.9	2.8	23.0
4 h after dark	4.35	2.1	6.6
8 h after dark	6.1	5.8	6.4
12 h after dark	3.2	2.5	3.9