condition	mean	min	max
4 h after light	18.263953	18.112676	18.41523
8 h after light	16.934571	16.477395	17.391747
12 h after light	17.351803500000003	16.590931	18.112676
4 h after dark	19.2505585	18.112676	20.388441
8 h after dark	18.623114	16.535256	20.710972
12 h after dark	18.112676	18.112676	18.112676