condition	mean	min	max
4 h after light	3.9	3.9	3.9
8 h after light	17.45	4.9	30.0
12 h after light	3.9	3.2	4.6
4 h after dark	27.55	4.1	51.0
8 h after dark	5.75	5.6	5.9
12 h after dark	4.45	2.9	6.0