condition	mean	min	max
4 h after light	4.8	4.8	4.8
8 h after light	1.9	1.4	2.4
12 h after light	7.1	2.3	11.9
4 h after dark	3.1	1.5	4.7
8 h after dark	11.3	9.3	13.3
12 h after dark	4.4	2.1	6.7