condition	mean	min	max
4 h after light	4.56039	4.5023	4.61848
8 h after light	7.402915	6.89295	7.91288
12 h after light	7.95764	7.65716	8.25812
4 h after dark	8.224825	7.91877	8.53088
8 h after dark	6.60975	6.19593	7.02357
12 h after dark	6.87044	5.99643	7.74445