condition	mean	min	max
4 h after light	2.4	2.4	2.4
8 h after light	2.7	2.3	3.1
12 h after light	3.6	3.0	4.2
4 h after dark	3.4	2.8	4.0
8 h after dark	6.15	3.5	8.8
12 h after dark	2.55	2.3	2.8