condition	mean	min	max
4 h after light	3.4	3.4	3.4
8 h after light	4.2	3.5	4.9
12 h after light	3.55	3.2	3.9
4 h after dark	4.45	3.2	5.7
8 h after dark	4.15	3.6	4.7
12 h after dark	3.25	3.1	3.4