condition	mean	min	max
4 h after light	3.1	3.1	3.1
8 h after light	2.7	2.1	3.3
12 h after light	5.9	3.3	8.5
4 h after dark	10.6	4.2	17.0
8 h after dark	5.0	3.2	6.8
12 h after dark	2.7	2.3	3.1