condition	mean	min	max
4 h after light	2.8	2.8	2.8
8 h after light	3.05	2.1	4.0
12 h after light	23.3	4.9	41.7
4 h after dark	8.45	6.7	10.2
8 h after dark	5.1	4.5	5.7
12 h after dark	4.9	3.5	6.3