condition	mean	min	max
4 h after light	2.8	2.8	2.8
8 h after light	4.15	3.1	5.2
12 h after light	3.9	3.7	4.1
4 h after dark	2.55	1.9	3.2
8 h after dark	3.55	1.6	5.5
12 h after dark	3.0	2.3	3.7