condition	mean	min	max
4 h after light	8.9	8.9	8.9
8 h after light	2.85	2.7	3.0
12 h after light	5.8	4.0	7.6
4 h after dark	24.15	1.8	46.5
8 h after dark	2.05	2.0	2.1
12 h after dark	6.7	5.7	7.7