condition	mean	min	max
4 h after light	6.68013	6.58068	6.83865
8 h after light	6.78494	6.55079	6.924339999999999
12 h after light	6.808346666666667	6.63488	6.92828
4 h after dark	6.884259999999999	6.603289999999999	7.17042
8 h after dark	7.015226666666667	6.7767800000000005	7.2543
12 h after dark	7.199786666666667	7.07343	7.397