condition	mean	min	max
4 h after light	16.471982	14.670496	18.273468
8 h after light	15.6482235	15.447129	15.849318
12 h after light	15.41221	15.377291	15.447129
4 h after dark	16.1979885	13.720212	18.675765
8 h after dark	14.7374305	14.027732	15.447129
12 h after dark	25.73771	25.73771	25.73771