condition	mean	min	max
4 h after light	3.941685	3.26128	4.62209
8 h after light	5.939965	5.45559	6.42434
12 h after light	9.461155	9.21858	9.70373
4 h after dark	14.3639	10.5239	17.4535
8 h after dark	8.50221	4.90267	10.912
12 h after dark	9.89988	6.34101	14.5565