condition	mean	min	max
4 h after light	4.8	4.8	4.8
8 h after light	3.85	1.3	6.4
12 h after light	4.15	3.9	4.4
4 h after dark	11.6	1.9	21.3
8 h after dark	6.2	1.8	10.6
12 h after dark	6.1	5.2	7.0