condition	mean	min	max
4 h after light	9.8	9.8	9.8
8 h after light	12.05	5.0	19.1
12 h after light	8.05	7.4	8.7
4 h after dark	6.75	6.5	7.0
8 h after dark	8.15	5.4	10.9
12 h after dark	6.85	6.7	7.0