condition	mean	min	max
4 h after light	3.67669	3.51269	3.84069
8 h after light	5.03603	4.59994	5.47212
12 h after light	4.846640000000001	4.33968	5.3536
4 h after dark	7.718135	6.91531	8.52096
8 h after dark	6.988065	6.71634	7.25979
12 h after dark	6.61984	6.59896	6.64072