condition	mean	min	max
4 h after light	19.916936	19.916936	19.916936
8 h after light	20.8070855	20.520647	21.093524
12 h after light	16.2532765	12.487487	20.019066
4 h after dark	19.8648775	19.812819	19.916936
8 h after dark	21.116795500000002	19.916936	22.316655
12 h after dark	18.097093	18.097093	18.097093