condition	mean	min	max
4 h after light	2.6	2.6	2.6
8 h after light	3.55	2.3	4.8
12 h after light	2.45	2.4	2.5
4 h after dark	3.15	2.8	3.5
8 h after dark	4.0	2.6	5.4
12 h after dark	4.1	2.3	5.9