condition	mean	min	max
4 h after light	6.420265	6.00754	6.83299
8 h after light	6.489855	6.01472	6.96499
12 h after light	7.947464999999999	7.62502	8.26991
4 h after dark	10.027876666666666	9.71833	10.1923
8 h after dark	11.3379	10.745	11.7111
12 h after dark	7.05001	5.47903	8.24261