condition	mean	min	max
4 h after light	6.3	6.3	6.3
8 h after light	19.8	10.1	29.5
12 h after light	7.35	6.2	8.5
4 h after dark	8.0	6.9	9.1
8 h after dark	10.05	7.2	12.9
12 h after dark	7.35	6.5	8.2