condition	mean	min	max
4 h after light	6.8	6.8	6.8
8 h after light	5.15	5.1	5.2
12 h after light	2.4	1.9	2.9
4 h after dark	4.1	3.6	4.6
8 h after dark	2.95	1.9	4.0
12 h after dark	13.2	7.0	19.4