condition	mean	min	max
4 h after light	1.3	1.3	1.3
8 h after light	13.2	1.7	24.7
12 h after light	8.0	8.0	8.0
4 h after dark	6.75	5.6	7.9
8 h after dark	3.55	3.1	4.0
12 h after dark	4.0	3.5	4.5