condition	mean	min	max
4 h after light	9.252915	8.36943	10.1364
8 h after light	7.081385	6.62586	7.53691
12 h after light	7.2934149999999995	7.1913	7.39553
4 h after dark	8.17864	7.82524	8.53204
8 h after dark	9.56238	9.50814	9.61662
12 h after dark	9.102799999999998	8.51625	9.68935