condition	mean	min	max
4 h after light	5.952836666666666	5.55127	6.22082
8 h after light	6.159483333333333	6.0006	6.41366
12 h after light	6.3257	6.162000000000001	6.43691
4 h after dark	6.29852	6.00936	6.45049
8 h after dark	6.059583333333333	5.85489	6.25393
12 h after dark	6.05186	6.00496	6.13121