condition	mean	min	max
4 h after light	2.9	2.9	2.9
8 h after light	12.9	7.0	18.8
12 h after light	9.5	7.5	11.5
4 h after dark	20.3	6.1	34.5
8 h after dark	5.9	4.9	6.9
12 h after dark	3.55	3.2	3.9