condition	mean	min	max
4 h after light	23.039081000000003	20.631848	25.446314
8 h after light	17.0494165	15.238944	18.859889
12 h after light	17.6843925	17.422678	17.946107
4 h after dark	18.122736	16.283075	19.962397
8 h after dark	16.467191	14.939327	17.995055
12 h after dark	20.205854	20.205854	20.205854