condition	mean	min	max
4 h after light	6.3	6.3	6.3
8 h after light	2.5	2.3	2.7
12 h after light	1.1	1.1	1.1
4 h after dark	2.2	2.2	2.2
8 h after dark	17.2	4.6	29.8
12 h after dark	1.6	1.5	1.7