condition	mean	min	max
4 h after light	8.3	8.3	8.3
8 h after light	5.35	5.2	5.5
12 h after light	8.05	8.0	8.1
4 h after dark	27.2	6.8	47.6
8 h after dark	18.15	9.1	27.2
12 h after dark	4.75	3.4	6.1