condition	mean	min	max
4 h after light	21.2665	20.6088	21.9242
8 h after light	21.2773	20.3829	22.1717
12 h after light	22.76745	20.2589	25.276
4 h after dark	19.3572	18.3189	20.3955
8 h after dark	15.4801	15.0529	15.9073
12 h after dark	21.13025	20.0024	22.2581