condition	mean	min	max
4 h after light	7.9869945	7.437372	8.536617
8 h after light	7.078257	6.925939	7.230575
12 h after light	8.3105585	7.820455	8.800662
4 h after dark	7.7674695	6.877881	8.657058
8 h after dark	7.583546999999999	7.514383	7.652711
12 h after dark	7.025346	7.025346	7.025346