condition	mean	min	max
4 h after light	1.7	1.7	1.7
8 h after light	2.85	1.5	4.2
12 h after light	8.3	5.0	11.6
4 h after dark	3.1	2.6	3.6
8 h after dark	13.0	3.5	22.5
12 h after dark	2.0	1.0	3.0