condition	mean	min	max
4 h after light	4.9	4.9	4.9
8 h after light	2.1	1.5	2.7
12 h after light	4.2	2.5	5.9
4 h after dark	5.0	4.3	5.7
8 h after dark	6.7	6.0	7.4
12 h after dark	3.35	2.2	4.5