condition	mean	min	max
4 h after light	6.4	6.4	6.4
8 h after light	10.0	6.3	13.7
12 h after light	3.5	2.2	4.8
4 h after dark	10.55	4.0	17.1
8 h after dark	4.0	3.9	4.1
12 h after dark	1.5	1.4	1.6