condition	mean	min	max
4 h after light	17.51095	15.8915	19.1304
8 h after light	14.605599999999999	13.8386	15.3726
12 h after light	15.9323	14.6648	17.1998
4 h after dark	19.4834	18.3891	20.5777
8 h after dark	17.3081	17.1101	17.5061
12 h after dark	19.1283	18.6924	19.5642